Patent ID: 9397106
Filing Date: 2016-07-19
CPC Classification: G06F,G11C,H01L

Claim Text:
1. A method of producing a Macro Read Only Memory (MROM) memory based on an One Time Programmable (OTP) memory, comprising at least the following steps: 1) providing an OTP memory map, the OTP memory map comprising a plurality of OTP memory cells for storing data “0” and for storing data “1”, and said each OTP memory cell comprising at least a first P-type Metal Oxide Semiconductor (PMOS) transistor connected in series with a second PMOS transistor having a floating gate; 2) removing the floating gate of the second PMOS transistor of said each OTP memory cell for storing data “0” in the OTP memory map, such that said each OTP memory cell being transferred to a MROM memory cell for storing data “0”, and retaining the original structure of said each OTP memory cell for storing data “1” in the OTP memory map, thereby an original structure being used as a MROM memory cell for storing data “1”, thus forming a MROM memory map; and 3) producing a MROM memory according to the MROM memory map.