Invention Grant
- Patent Title: Low-leakage sense circuit, memory circuit incorporating the low-leakage sense circuit, and method
-
Application No.: US17143193Application Date: 2021-01-07
-
Publication No.: US11495288B2Publication Date: 2022-11-08
- Inventor: Vivek Raj , Shivraj G. Dharne , Uttam K. Saha , Mahbub Rashed
- Applicant: GLOBALFOUNDRIES U.S. Inc.
- Applicant Address: US NY Malta
- Assignee: GLOBALFOUNDRIES U.S. Inc.
- Current Assignee: GLOBALFOUNDRIES U.S. Inc.
- Current Assignee Address: US NY Malta
- Agency: Hoffman Warnick LLC
- Agent David Cain
- Main IPC: G11C11/419
- IPC: G11C11/419 ; H01L27/11 ; G11C11/412

Abstract:
A disclosed sense circuit for a memory circuit includes sense amplifiers that detect differences in voltage levels on complementary bitlines during read operations. Instead of the sense amplifiers having built-in footer devices that lead to significant leakage, the sense circuit incorporates a common footer device for all sense amplifiers. To ensure that this footer device has sufficient drive strength to enable voltage differential detection by each sense amplifier, the sense circuit also includes a sense signal generation and boost circuit (SSG&B circuit) that generates a sense mode control signal (SEN) to control the on/off states of the footer device and that further boosts SEN, at the appropriate time, to increase the drive current. By using the common footer device and the SSG&B circuit, leakage from the sense circuit is reduced during a pre-charge operation mode without sacrificing performance during a read operation mode. Also disclosed are associated method embodiments.
Public/Granted literature
- US20220215872A1 LOW-LEAKAGE SENSE CIRCUIT, MEMORY CIRCUIT INCORPORATING THE LOW-LEAKAGE SENSE CIRCUIT, AND METHOD Public/Granted day:2022-07-07
Information query
IPC分类: