Invention Grant
US09165642B2 Low voltage dual supply memory cell with two word lines and activation circuitry
有权
低电压双电源存储单元,带有两个字线和激活电路
- Patent Title: Low voltage dual supply memory cell with two word lines and activation circuitry
- Patent Title (中): 低电压双电源存储单元,带有两个字线和激活电路
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Application No.: US13746395Application Date: 2013-01-22
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Publication No.: US09165642B2Publication Date: 2015-10-20
- Inventor: Shishir Kumar
- Applicant: STMicroelectronics International N.V.
- Applicant Address: NL Amsterdam
- Assignee: STMicroelectronics International N.V.
- Current Assignee: STMicroelectronics International N.V.
- Current Assignee Address: NL Amsterdam
- Agency: Gardere Wynne Sewell LLP
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C11/419 ; G11C8/08 ; G11C11/418

Abstract:
A memory cell includes a latch having a true data node and a complement data node, a true bitline, a complement bitline, a first access transistor coupled between the true bitline and the true data node, and a second access transistor coupled between the complement bitline and the complement data node. A wordline driver circuit includes a true wordline coupled to control the first access transistor and a complement wordline coupled to control the second access transistor. The wordline driver generates control signals on the true and complement wordlines to access the memory cell by: actuating the first access transistor while the second access transistor is not actuated and then actuating the second access transistor while the first access transistor is not actuated. The bitlines and wordlines are supplied from different sets of power supply voltages, with the bitline high supply voltage being less than the wordline high supply voltage.
Public/Granted literature
- US20140204656A1 LOW VOLTAGE DUAL SUPPLY MEMORY CELL WITH TWO WORD LINES AND ACTIVATION CIRCUITRY Public/Granted day:2014-07-24
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