Invention Grant
- Patent Title: Static random access memory (SRAM) tracking cells and methods of forming the same
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Application No.: US15728345Application Date: 2017-10-09
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Publication No.: US10163496B2Publication Date: 2018-12-25
- Inventor: Jhon Jhy Liaw
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Slater Matsil, LLP
- Main IPC: G11C5/06
- IPC: G11C5/06 ; G11C11/419 ; H01L49/02

Abstract:
An embodiment static random access memory (SRAM) array includes a writable SRAM cell disposed in a first row of the SRAM array and an SRAM read current tracking cell in the first row of the SRAM array. The SRAM current tracking cell includes a first read pull-down transistor and a first read pass-gate transistor. The first read pull-down transistor includes a first gate electrically connected to a first positive supply voltage line; a first source/drain electrically connected to a first ground line; and a second source/drain. The first read pass-gate transistor includes a third source/drain electrically connected to the second source/drain and a fourth source/drain electrically connected to a read tracking bit line (BL). The read tracking BL is electrically connected to a read sense amplifier timing control circuit.
Public/Granted literature
- US20180033481A1 Static Random Access Memory (SRAM) Tracking Cells and Methods of Forming the Same Public/Granted day:2018-02-01
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