Abstract:
Application of too much voltage to a memory cell will cause damage to the cell or even destroy the cell. Tracking current that arises from an application of voltage upon a memory cell allows for minimization of damage upon the memory cell. If there is a change in current, then the voltage application can be accordingly changed.

Description:
TECHNICAL FIELD 
     The subject specification relates generally to voltage application and in particular to sensing current from a voltage application upon a memory cell. 
     BACKGROUND 
     Recent developments have taken place regarding storage of information in a digital format. Storing information in a digital format includes storing individual bits of information as an ‘I’ (e.g., a high state) or as an ‘O’ (e.g., a low state). This type of information storage permeates many applications including photography, interpersonal communication, music recording, as well as others. Various memory types exist to digitally store information with different characteristics. These memory types have different characteristics that make them applicable for different types of applications. For example, a memory type that cannot be re-written can be beneficial for data that is necessary for a system to operate properly. This provides a greater likelihood that the information will be available when needed by the system. 
     One specific development is the introduction of flash memory technology. Flash memory is a memory type that is readable, re-writeable, and non-volatile. In addition, many flash memory devices are small and portable. This allows for usage of flash memory in an array of personal applications. A common flash memory device can be accessed by an array of different electronic devices, where electronic devices likely read information stored on flash memory device. The ability to re-write to flash memory allows a user to use the memory as temporary storage location. For example, a user can store a photograph in a flash memory device and transfer the photograph to a desktop computer. Once the transfer is complete, the user can store to cells that were previously used. In addition, flash memory is easily transportable since it does not need a constant source of power to retain memory. 
     SUMMARY 
     The following presents a simplified summary of the specification in order to provide a basic understanding of some aspects of the specification. This summary is not an extensive overview of the specification. It is intended to neither identify key or critical elements of the specification nor delineate the scope of the specification. Its sole purpose is to present some concepts of the specification in a simplified form as a prelude to the more detailed description that is presented later. 
     Application of excessive voltage to a memory cell can cause damage to the cell or destroy the cell. Therefore, the subject specification allows for sensing current that results from the application of voltage upon the memory cell. Based on current, a sensor component can determine the state of the cell and if the voltage applied to the memory cell is at a dangerous level. Based on determinations by the sensor component, the application of voltage can be stopped before there is damage to the memory cell. 
     In addition, the subject specification allows for improved operation of a flash memory device. Since there is tracking of the current that is produced from a state change, voltage application can be changed in real time to allow for optimal memory cell manipulation. If the current of a cell is dropping, then there can be an increase in voltage upon the memory cell to allow for a faster state change if an increased voltage level will not damage the memory cell. 
     The following description and the annexed drawings set forth certain illustrative aspects of the specification. These aspects are indicative, however, of but a few of the various ways in which the principles of the specification may be employed. Other advantages and novel features of the specification will become apparent from the following detailed description of the specification when considered in conjunction with the drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a representative flash memory device in accordance with an aspect of a subject specification. 
         FIG. 2  illustrates a representative drain-side sensing configuration in accordance with an aspect of a subject specification. 
         FIG. 3  illustrates a representative source-side sensing configuration in accordance with an aspect of a subject specification. 
         FIG. 4  illustrates a representative cell component in accordance with an aspect of a subject specification. 
         FIG. 5  illustrates a representative flash memory device with an error check component in accordance with an aspect of a subject specification. 
         FIG. 6  illustrates a representative flash memory device with an optimization component in accordance with an aspect of a subject specification. 
         FIG. 7  illustrates a representative flash memory device with an authorization component in accordance with an aspect of a subject specification. 
         FIG. 8  illustrates a representative flash memory device with a notification component in accordance with an aspect of a subject specification. 
         FIG. 9  illustrates a representative flash memory device with a check component in accordance with an aspect of a subject specification. 
         FIG. 10  illustrates a representative flash memory device in accordance with an aspect of the subject specification. 
         FIG. 11  illustrates a representative sensor component in accordance with an aspect of the subject specification. 
         FIG. 12  illustrates a representative methodology in accordance with an aspect of the subject specification. 
         FIG. 13   a  illustrates a representative first part of a methodology in accordance with an aspect of the subject specification. 
         FIG. 13   b  illustrates a representative second part of a methodology in accordance with an aspect of the subject specification. 
     
    
    
     DETAILED DESCRIPTION 
     The claimed subject matter is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the claimed subject matter. It may be evident, however, that the claimed subject matter may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing the claimed subject matter. 
     As used in this application, the terms “component,” “module,” “system”, “interface”, or the like are generally intended to refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a controller and the controller can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. As another example, an interface can include I/O components as well as associated processor, application, and/or API components. The designation ‘I’ and ‘1’ can be used to signify a high logical state and are to be used interchangeably. The designation ‘O’ and ‘0’ can be used to signify a low logical state and are to be used interchangeably. 
     Furthermore, the claimed subject matter may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof to control a computer to implement the disclosed subject matter. The term “article of manufacture” as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips . . . ), optical disks (e.g., compact disk (CD), digital versatile disk (DVD) . . . ), smart cards, and flash memory devices (e.g., card, stick, key drive . . . ). Additionally it should be appreciated that a carrier wave can be employed to carry computer-readable electronic data such as those used in transmitting and receiving electronic mail or in accessing a network such as the Internet or a local area network (LAN). Of course, those skilled in the art will recognize many modifications may be made to this configuration without departing from the scope or spirit of the claimed subject matter. 
     Moreover, the word “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects or designs. Rather, use of the word exemplary is intended to present concepts in a concrete fashion. As used in this application, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or”. That is, unless specified otherwise, or clear from context, “X employs A or B” is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, then “X employs A or B” is satisfied under any of the foregoing instances. In addition, the articles “a” and “an” as used in this application and the appended claims should generally be construed to mean “one or more” unless specified otherwise or clear from context to be directed to a singular form. 
       FIG. 1  discloses an example partial flash memory device  100 . A receiving component  102  obtains a command to alter a state of a cell component  104 . The command can originate from a number of different locations. In one embodiment, the flash memory device  100  communicates with an auxiliary device (e.g., a cellular telephone). For example, the auxiliary device requests that information be stored in the cell component  104 . The receiving component  102  can process a request and identify a cell component  104  in which to store information. Information disclosed in the subject specification can apply for erasing a cell component, programming a cell component, as well as for other state change types. 
     In another embodiment, the receiving component  102  receives requests from within the flash memory device  100  to change the state of the cell component  104 . For example, the flash memory device  100  can configure to erase information if it has not been accessed in a specific period (e.g., the information has not been accessed in twenty-four months). A command can arrive from another portion of the flash memory device  100  to erase information after the specific period. In a further embodiment, the receiving component  102  can communicate wirelessly to receive commands for state changes on the cell component  104 . 
     A storage component  106  operates to keep a record of various activities that take place with regard to the flash memory device  100 . For example, each time a command is received by the receiving component  102 , the storage component  106  can create a record of the command. The storage component  106  can also make comparisons based on information concerning the request and execution of the request. Records of comparisons can also be saved in the storage component  106 . Furthermore, the storage component  106  can keep records about a voltage application component  108 , sensor component  110 , and/or cell component  104 . 
     A voltage application component  108  places a voltage upon the cell component  104 . Application of a voltage upon the cell component  104  includes applying a current to the cell component  104 . A sensor component  110  can constantly determine what current is passing through it, which is representative of the voltage applied to the cell component  104  and how the cell component  104  is reacting to the application of current. This allows for a verification voltage and a state-change voltage to take place at the same time. 
     In another embodiment, the sensor component  110  only takes samples of the current passing through it as opposed to constantly determining the current. For example, the sensor component  110  can takes samples at a specific increment of time (e.g., every nanosecond). In another example, the sensor component  110  performs intelligent sampling of current. The sensor component  110  can increase or decrease the duration between samples taken based on the results of a sample. If the current is at a level that is near a state change for the cell component  104 , then the sensor component  110  can increase the amount of samples taken. 
     The sensor component  110  can have several capabilities toward regulating operation of the flash memory device  100  and in turn the voltage application component  108 . In one embodiment, the sensor component  110  has the capability of stopping a voltage application. For example, the sensor component  110  can determine that the cell component  104  has changed states and the application of any more voltage could cause damage to the cell component  104 . Therefore, the sensor component  110  stops voltage application. Regulating can be considered any action the sensor component takes in response to a sensed current and/or voltage. For example, regulating can be forcing the voltage application component  108  to stop providing voltage. In another example, regulating can be informing the voltage application component  108  as to the status of voltage application without forcing an action. 
     In another embodiment, the sensor component  110  regulates operation by sending a message to the voltage application component  108 . For example, the sensor component  110  can determine that the state of the cell component  104  has changed and application of any more voltage could cause damage to the cell component  104 . The sensor component  110  can send a message to the voltage application component  108  advising that voltage application should stop. However, the voltage application component  108  ultimately determines when to stop voltage application. 
     In a further embodiment, the sensor component  110  can communicate with the storage component  106 . The characteristics of voltage application upon the cell component  104  can be saved in the storage component  106 . For example, the rate in which the state changes in the cell component  104  can be determined by the sensor component  110 . The sensor component  110  can keep a record of this and store the record in the storage component  106 . 
     In operation, voltage is applied to the charge-holding component to change a state of the cell component  104 . The sensor component  110  determines current that passes through it to detect the state of the charge-holding component. For example, one Amp can initially pass through the sensor component  110 . However, as the state of the cell changes, current can switch to two Amps. The sensor component  110  can sense the change and have internal logic to determine how to proceed. 
     Under Ohm&#39;s law, current is equal to voltage over resistance. Voltage is known because it is supplied from the voltage application component  508  and this information can be accessed by the sensor component  510 . The sensor component  508  determines the current traveling to the cell component  504 . With the voltage and current known, the resistance can be determined of the cell component  504 . Resistance can relate to a state of the cell component. The sensor component  510  can reference the storage component to determine what resistance equals what state (e.g., 1-Ohm equals ‘0010’). The sensor component  510  can communicate with the voltage application component  508  with appropriate information. 
     In one embodiment, a rise in current can mean the cell is almost complete with a state change. Therefore, the sensor component  110  instructs the voltage application component  106  to lower or stop voltage supply. In another embodiment, a rise in current can mean more voltage should be applied to the cell component. Therefore, the sensor component  110  instructs the voltage application component to increase the voltage supply. The sensor component  110  can specifically tell the voltage application component  108  what voltage to supply. However, the sensor component  110  can instruct the voltage application component  108  to increase the voltage without a recommendation as to what voltage to apply. 
     The subject specification allows for state changing without switching between a verification and state changing. Performing the switch uses a lot of overhead and draws a large amount of system resources. This allows for operation in real time. This can take place for operations other than changing the state of a cell component in flash memory. For example, information in the subject specification can apply to charging a capacitor. Therefore, a cell component represents any component that can react to a voltage application. A cell component includes a memory cell. 
       FIG. 2  discloses an example drain-side sensing configuration  200 . A reference voltage component  202  and a state change voltage component  204  allow for a state change to take place on a cell component. A core current component  206  produces a current that allows the configuration to operate. A positive voltage supply component  208  allows a sensor component  210  to operate (e.g., supplies power to the sensor component). A sensor reference component  212  gives a base in which a sensor component  210  can use in determining a state of a cell component. The sensor component  210  can be similar to or the same as the sensor component  110  of  FIG. 1 . 
     In the displayed configuration, a relationship should be known between a verify/read level and a state change current. This allows the sensor component  210  to know the difference between a state change voltage application and a read voltage application. In addition, the configuration  200  can use a fixed, stepped, or ramped gain and a fixed, stepped, or ramped drain. Use of this configuration can eliminate a verify/state-change/verify sequence and instead have verification take place during a state-change. Core current could be higher during a state-change, but it could average out with a faster state-change speed. 
       FIG. 3  discloses an example source-side sensing configuration  300 . A reference voltage component  302  gives the configuration  300  a reference to use during operation. A voltage drain component  304  and core current component connect  306  to a positive voltage supply component  308  to provide power to the sensor component  3   10 . A sensor reference component  312  gives a base in which a sensor component  310  can use in determining a state of a cell component. The sensor component  310  can be similar to or the same as the sensor component  110  of  FIG. 1 . 
     In the displayed configuration, a relationship should be known between a verify/read level and a state change current. This allows the sensor component  310  to know the difference between a state-change voltage application and a read voltage application. In addition, the configuration  300  can use a fixed, stepped, or ramped gain and a fixed, stepped, or ramped drain. Use of this configuration can eliminate a verify/state-change/verify sequence and instead have verification take place during a state-change. Core current could be higher during a state-change, but it could average out with a faster state-change speed. 
       FIG. 4  illustrates an example cell component  104 . Voltages applied by a voltage application component  106  of  FIG. 1  can apply to either a drain component  402  or a source component  404 . A sensor component  110  of  FIG. 1  can use a configuration  200  of  FIG. 2  to sense current off the drain component  402 . A sensor component  110  of  FIG. 1  can use a configuration  300  of  FIG. 3  to sense current off the source component  404 . A charge-holding component  406  includes the capability of having a state (e.g., storing at least one bit of information). The cell component  104  is grounded through a ground component  408 . In addition, a wordline  410  and a bitline  412  assist in holding information. 
       FIG. 5  discloses an example partial flash memory device  500 . A receiving component  502  gathers commands to change the state of a cell component  504 . Information relating to commands can be stored in a storage component  506 . A voltage application component  508  applies voltage to the cell component  504  to alter the state of the cell component  504 . For example, the cell component  504  can have a state of ‘0000’ and voltage can be applied to change the state to ‘0011’. A sensor component  510  reads current information about the application of voltage to the cell component and determines what voltage should apply. 
     An error check component  512  can process errors found in the flash memory device  500 . Processing errors can entail a variety of actions. For example, the error check component  512  can attempt to correct errors that take place concerning the flash memory device  500 . In another example, the error check component  512  can simply identify the errors and store error information in the storage component  506 . In a further example, the error check component can attempt to determine why an error took place without actually correcting the error. This information can be communicated with an auxiliary device. It is to be appreciated that the error check component can process errors found in components in other portions of the subject specification. 
     In one embodiment, the error check component  512  performs checks relating to the receiving component  502 . For example, the receiving component  502  cannot accept commands from remote locations (e.g., a wireless device sending an instruction to the receiving component). The error check component can store a record of this error in the storage component  506 . Later, an auxiliary diagnostic system can access the records of the storage location  506  and attempt to correct and listed errors. 
     In another embodiment, the error check component  512  performs checks relating to the storage component  506 . For example, the storage component  506  can be deleting information if it has not been accessed in a certain amount of time (e.g., one month). However, there is no instruction for the storage component  506  to operate in this manner. Therefore, this would be an improper action by the storage component  506 . The error check component  512  can attempt to stop the storage component  506  from deleting information when it should not delete information. 
     In a further embodiment, the error check component  512  performs checks relating to the voltage application component  508 . The error check component  512  can hold information on what standard voltages should be applied to the cell component  504 . The voltage application component  508  can attempt to apply a voltage that is well beyond normal limits. The error check component  512  can identify that the voltage level is not within normal limits and stop the application from taking place. This can be beneficial because the application of a wrong voltage can damage or destroy the cell component  504 . 
     In yet another embodiment, the error check component  512  performs checks relating to the sensor component  510 . For example, the sensor component  510  can malfunction and not correctly sense current or not sense current at all. The error check component  512  can act as a secondary sensor component and attempt to make sure the cell component  504  is not damaged if the sensor component  510  fails. In addition, the error component can instruct a shutdown of the voltage application component  508  if the sensor component is in error. 
     In yet a further embodiment, the error check component  512  performs checks relating to the cell component  504 . For example, the cell component  504  can provide inconsistent reaction to the application of voltage. This can lead to a misread by the sensor component  510  and ultimately lead to damage to the cell component  504 . The error check component  512  can identify the error of the cell component  504  and attempt to protect the cell component  504  from damage. 
       FIG. 6  discloses an example partial flash memory device  600  with optimization component  602 . A receiving component  604  obtains instructions to change a state of a cell component  606 . Information relating to a state change can be stored in a storage component  608 . For example, the storage component  608  can hold information as to how long it takes to change a cell component  606  state for iterations of a voltage application component  610 . The voltage application component  610  applies voltage upon the cell component to change the state of the cell  606 . A sensor component  612  has current pass through it and the sensor component  612  makes determinations about the cell component  606  based on the current. 
     An optimization component  602  operates to allow the flash memory device  600  to operate at full or near-full potential. In one embodiment, the optimization component  602  processes the command received by the receiving component  604 . During processing, the optimization component  602  determines what voltages should be applied to the cell component to allow for the fastest state change (e.g., information to allow the voltage application component to operate more efficiently). This can take place by the optimization component  602  observing characteristics of the cell component  606  and making estimations based on a desired state. In general, the optimization component  602  calculates efficiency information. Calculated information is transferred to the voltage application component  610  where the calculated information is implemented. The sensor component  612  can regulate the implementation of calculated information and override voltage application if necessary or desirable. 
     In another embodiment, the optimization component  602  streamlines operations within the flash memory device. For example, process raw data into a format allowable for storage. This will allow other components to perform other tasks and allow for quicker access to information in the storage component  608 . 
       FIG. 7  discloses an example partial flash memory device  700  with an authorization component  702 . A receiving component  704  processes a request to alter a state of a cell. Commonly, this is a request to program information onto the cell component  706  or delete information from the cell component  706 . A record of the incoming request can be stored on a storage component  708 . The receiving component  704  communicates with a voltage application component  710  that the state of a cell component  706  should change. 
     An authorization component  702  performs a check to determine if the state of the cell component should change. For example, the cell component  706  can contain important information that would cause a detrimental situation if it were to be erased (e.g., a password to access financial records). The authorization component  702  can check to make sure the flash memory device  700  received an authorized request. That can be done in a number of different manners. 
     In one embodiment, the authorization component  702  can check if a request to change a state came from a specific user. Information on authorized users can be saved on the storage component  708  or it can be saved in internal memory of the authorization component  702 . In another embodiment, the authorization component  702  has a password that should be provided before a state change takes place. In a further embodiment, a request contains authentication information that should be checked by the authorization component  702  before a state change takes place on a cell component  706 . For each embodiment, the authorization component  702  can reject a request that is considered unauthorized. 
     Ultimately, the voltage application component  710  applies a voltage upon the cell component  706 . The sensor component  712  tracks current from the application of voltage upon the cell component. Based on various parameters, the sensor component  712  can change the amount of voltage applied by the voltage application component  710 . For example, if the current is drastically changing, then it could be a sign that the voltage should be stopped. Therefore, the sensor component can stop voltage application upon the cell component  706 . 
       FIG. 8  discloses an example partial flash memory device  800  with a notification component  802 . A receiving component  804  obtains a request to change the state of a cell component  806 . Information about the request can be stored in a storage component  808 . A voltage application component  810  applies a voltage to the cell component  806  in accordance with the request received by the receiving component  804 . Information about voltage application can be saved in the storage component  808 . A sensor component  812  monitors current from the application of voltage upon the cell component  806 . Based on the monitoring, the sensor component  812  can regulate voltage application so the cell component  806  does not become damaged or destroyed. 
     A notification component  802  sends messages about voltage application upon the cell component  806  (e.g., functionality of the flash memory device  800 ). The notification component  802  can send notices about the displayed components as well as related component within the flash memory device  800 . Furthermore, the notification component  802  can send information about devices in conjunction with the flash memory device  800  (e.g., an attached person computer that made the request). 
     For example, the notification component  802  can compile a report about operations within the flash memory device  800 . The report can contain an array of information, ranging from where to request originated to the performance of the sensor component  812  during operation. The report can be stored in the storage component  808  and send out to an auxiliary device. 
       FIG. 9  discloses an example partial flash memory device  900  with a check component  906 . A receiving component  904  processes requests to alter a state of a cell component  906 . Processing the request can include identifying a source location and storing the request in a storage component  908 . The receiving component  904  can also identify characteristics of the request. For example, a goal time in which a state change should complete. This information can transfer to a voltage application component  910  that applies a state-change voltage upon a cell that produces a current followed by a sensor component  912 . 
     A check component  902  verifies functions within the flash memory device  900 . In one embodiment, the check component  902  compares information received in the request (e.g., host system information) with information located in the storage component  908 . In another embodiment, the check component  902  can determine if the voltage application component  910  is applying a correct amount of voltage. The check component  902  can make a record of determinations made or attempt to correct inconsistent information. For example, if the voltage application component is applying 10 volts, but request stated 9.98 volts should be used, then the check component  902  can force the voltage application component  910  to apply the proper voltage. In a further embodiment, the check component  902  can request a user to verify a state change request. If the request is not properly verified, then it can be denied. 
       FIG. 10  illustrates an example flash memory device  1000  with components that can integrate with information disclosed in other portions of the subject specification. Same-named components in the subject specification can contain the functionality of one another and components disclosed in the subject specification can integrate together. A flash memory device  1000  has I/O ports  1002  that connect to an electronic device (e.g., a cellular telephone). The I/O port  1002  communicates with the electronic device digitally. The I/O port  1002  can have multiple configurations; for example, individual metal prongs or a universal serial bus (USB) port can be used to communicate with the electronic device. In addition, the I/O port  1002  can contain several components of the subject specification, for example a receiving component  102  of  FIG. 1  and/or a notification component  802  of  FIG. 8 . Power can be supplied to the flash memory device  1000  from the electronic device. 
     A page buffer  1004  is a temporary placeholder for information, such as an instruction passing from a receiving component  102  of  FIG. 1  to a voltage application component  108  of  FIG. 1 . A common page buffer  1004  employs static random access memory (SRAM). In many flash memory devices  1000 , there is a plurality of page buffers  1004  while drawing depicts the plurality as a single page buffer  1004 . There can be a scratch-pad buffer  1004  that performs temporary storage and  FIG. 10  shows this scratch pad buffer  1004  integrated in the general page buffer  1004 . 
     A memory array  1006  is a storage location for a flash memory device  1000 . Cell components disclosed in various parts of the subject specification can form a memory array  1006 . Typically, a memory array  1006  comprises a number of individual cell components that can contain information in bits, with typical cells holding one to four bits for information. It is to be appreciated that information of the subject specification can apply to cell components capable of containing more than four bits of information. In one embodiment, various storage components disclosed in the subject specification integrate into the memory array  1006 . In another embodiment, storage components disclosed in the subject specification are independent of the memory array  1006  and can be of a different memory type than the memory array  1006 . 
     A sensing block  1008  functions to monitor occurrences that take place within the flash memory device  1000 . For example, a sensing block  1008  can determine if a voltage application component disclosed in the subject specification has begun operation. A pump  1010  provides a high voltage for operations that require such a voltage. For example, some state-change functions require a relatively high level of voltage for proper operation. The pump  1010  can integrate with the voltage application component  108  of  FIG. 1  to provide voltages for state-changes. A state machine  1012  provides logic functions to the flash memory device  1000 . For example, some components only run during certain states and the state machine provides logic signals for those components. 
     A data flow control unit  1014  controls many major functions of the flash memory device  1000 . Functions generally includes writes, reads and erases, as well as several of the functions performed by components of the subject specification. For example, the voltage application component  108  can integrate with the data flow control unit  1014  to allow for state changes. However, in another embodiment, the voltage application component can integrate with the pump  1010 . In addition, other components, such as the sensor component  110  of  FIG. 1  can integrate into the data flow control unit  1014  to determine errors for the flash memory device  1000 . 
       FIG. 11  discloses an example sensor component  1100 . The sensor component  1100  can represent sensor components disclosed in various parts of the subject specification. In addition, a reference to a component name applies to all components of that name (e.g., reference to a cell component shows that information applies to all cell components disclosed in the subject specification). 
     An observation component  1102  monitors a response of voltage application upon a cell component. Commonly, this takes place by observing current that application of voltage upon a cell component produces. A balance component  1104  regulates a voltage application component as to the response of the cell component from the voltage application. For example, the balance component  1104  sends information observed by the observation component  1102  to a voltage application component. 
     Information can include instructions that the voltage application component must follow and/or data upon which the voltage application component can choose to act. The balance component  1104  can send information by using a communication component  1106 . The communication component  1106  can communicate through a variety of manners, including wireless communication. 
     In addition, the sensor component  1100  can include a storage component  1108 . Information about the observation component  1102 , balance component  1104 , and/or communication component  1106  can be saved in the storage component  1108 . Furthermore, intelligent decisions made by the sensor component  1100  can refer to the storage component  1108 . For example, a current can change from one Amp to half of an Amp. The storage component  1108  can contain information about what a current change signifies. The balance component  1104  accesses contained information and can make a determination on how to regulate based on that information. 
       FIG. 12  discloses an example methodology  1200  in accordance with the subject specification. There is reception of an instruction to change a state of a cell component (e.g., memory cell)  1202 . This reception is commonly received from auxiliary device with a user interface (e.g., cellular telephone). However, the instruction can originate from other locations. For example, an instruction can arise from internal components of a flash memory device. A copy of the command can be saved, commonly in internal storage  1204 . 
     A voltage is applied to change the state of the cell component  1206 . Action  1206  follows guidelines of the instruction received at event  1202 . As the voltage is applied to the cell component to change the state  1206 , there is sensing of current passing from a voltage supply to a cell component  1208 . As the sensing takes place, two checks occur. The first check  1210  determines if an applied voltage level should change. The sensing of current  1208  can be configured to determine if there should be a voltage change based on the observed current. For example, the observed current can change from 0.5 Amp to 1 Amp. This change can signify that there should be a change in an applied voltage upon a cell component. If there needs to be a new voltage, then the methodology  1200  returns to action  1206 . 
     A second check determines if voltage application should stop  1212 . When a cell component reaches a desired state, further programming could render damage to the cell component. Therefore, the application should be stopped  1214 . If the application should not be stopped, then the methodology  1200  returns to a check if the applied voltage should change  1210 . 
       FIG. 13   a  and  FIG. 13   b  disclose an example methodology  1300  in accordance with the subject specification. A request is received to change the state of a cell component (e.g., a memory cell)  1302  that can be stored in memory  1304 . This is a request to administer a voltage upon a cell component. A check can take place to determine if a received request is authorized  1306 . For example, the request can be to modify an academic grade file. Check  1306  can determine if the request is from a teacher or administrator. If the request came from an unauthorized source (e.g., a student), then there can be denial of the request to change  1308 . Denial of the request  1308  or continuing with the methodology  1310  operating in accordance with a determined result. 
     If the request is authorized, then the methodology  1300  can verify the request  1310 . For example, the request can be compared with similar requests to determine how the methodology should perform in later actions. Furthermore, verification allows for a check with a user. For example, if there is a request to change an academic grade file, a conformation request to verify can be produced. While not shown, the verification can act as a check. An unverified request can be denied. 
     A verified request can be optimized, which can entail calculating an optimization  1312 . This allows the methodology  1300  to operate at an improved efficiency. For example, there can be a calculation of a cell component state and a comparison between a current state and a desired state. The optimization component can calculate a voltage that is expected to obtain the new state in the fastest time possible. There is engagement of error checks related to voltage administration upon the cell component  1314 . This can entail identifying errors or attempting to fix errors related to a state change. 
     A voltage is administered to change the state of the cell component  1316 . In common operation, action  1316  follows instruction received in action  1302  in conjunction with optimization characteristics calculated at event  1312 . As there is administration of voltage to the cell component to change the state  1316 , there is sensing of current passing from a voltage supply to a cell component  1318 .  1318  is sensing an impact from a voltage administration upon a cell component. 
     As the sensing takes place, two checks occur. The first check  1320  determines if an applied voltage level should change. According to one embodiment of the subject specification, the change is to allow the methodology  1300  to operate faster. The sensing of current  1318  can be configured to determine if there should be a voltage change based on the observed current. For example, the observed current can change from two Amps to one Amp. An observed current change such as this can signify that there should be a change in an applied voltage upon a cell component. If there needs to be a new voltage, then the methodology  1300  returns to action  1316 . 
     A second check determines if voltage application should stop  1322 . When a cell component reaches a desired state, further programming could render damage to the cell component or destroy the cell component. Therefore, the application should be stopped  1324  if the state has successfully changed. The checks  1320  and  1322  show communication between sensing and voltage application. Therefore, these checks show sending information related to the impact from the voltage administration. In addition changing the voltage and/or stopping the voltage show implementing sent information. If the application should not be stopped, then the methodology  1300  returns to a check if the applied voltage should change  1320 . Notification can be supplied concerning various actions disclosed in the methodology  1300 . 
     What has been described above includes examples of the subject specification. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the subject specification, but one of ordinary skill in the art may recognize that many further combinations and permutations of the subject specification are possible. Accordingly, the subject specification is intended to embrace all such alterations, modifications and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.