Patent ID: 6222760
Filing Date: 2001-04-24
Classification: G11C

Abstract:
An OTP (One Time Programmable) micro-controller comprising:an EPROM (erasable programmable read only memory) adapted for storing main code, option code and ID code;an address decode adapted for producing storage address data in said EPROM for writing in data or reading out data;a data buffer adapted to temporarily store input/output data, said data buffer having has the function of data input/output buffering;a high-data/low-data switching unit adapted to separate input/output data into high-data and low-data, enabling high-data and low-data to be respectively transmitted to said EPROM;a program mode control connected to said data buffer to produce a corresponding program mode control signal, and controlled to produce a switching signal to said high-data/low-data switching unit to determine high-data/low-data output;a control unit controlled by the program mode control signal from said program mode control to write data in said EPROM, or to read out data from said EPROM;a high-voltage detector adapted to detect input voltage, enabling the micro-controller to run write-in action when the input voltage surpasses a set value; andan output buffer connected to said control unit for temporarily storing data for output.