Invention Grant
- Patent Title: CMOS SRAM/ROM unified bit cell
- Patent Title (中): CMOS SRAM / ROM统一位单元
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Application No.: US11652726Application Date: 2007-01-12
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Publication No.: US07710761B2Publication Date: 2010-05-04
- Inventor: Dennis Ray Miller , Mohammad Hafijur Rahman , Mohammad Ehsanul Kabir
- Applicant: Dennis Ray Miller , Mohammad Hafijur Rahman , Mohammad Ehsanul Kabir
- Applicant Address: US CA Cupertino
- Assignee: VNS Portfolio LLC
- Current Assignee: VNS Portfolio LLC
- Current Assignee Address: US CA Cupertino
- Agency: Henneman & Associates, PLC
- Agent Larry E. Henneman, Jr.
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A memory cell including a bit and bitnot sense lines as well as a random access memory (RAM) word line and a read only memory (ROM) word line. The memory cell particularly includes a static RAM (SRAM) bit cell and a ROM bit cell. The SRAM bit cell is coupled between the bit and bitnot sense lines, and is responsive to a signal on the RAM word line. The ROM bit cell is also coupled between the bit and bitnot sense lines, and is responsive to a signal on the ROM word line. The ROM bit cell includes first and second ROM pass transistors, a first node for permanently programming connection of the first ROM pass transistor to either a voltage line or a ground line, and a second node for permanently programming connection of the second ROM pass transistor to either the voltage line or the ground line.
Public/Granted literature
- US20080170430A1 CMOS SRAM/ROM UNIFIED BIT CELL Public/Granted day:2008-07-17
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