Invention Grant
- Patent Title: Level-shifting transparent window sense amplifier
-
Application No.: US16369395Application Date: 2019-03-29
-
Publication No.: US10734040B1Publication Date: 2020-08-04
- Inventor: Vivekanandan Venugopal , Ajay Bhatia
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Main IPC: G11C7/00
- IPC: G11C7/00 ; G11C7/08 ; H03K3/037 ; G11C7/10 ; G11C7/22 ; H03K19/0185

Abstract:
Techniques are disclosed relating to level-shifting circuitry and time borrowing across voltage domains. In some embodiments, sense amplifier circuitry generates, based on an input signal at a first voltage level, an output signal at a second, different voltage level. Pulse circuitry may generate a pulse signal in response to an active clock edge of a clock signal that is input to the sense amplifier circuitry. Initial resolution circuitry may drive the output signal of the sense amplifier circuitry to match the value of the input signal during the pulse signal. Secondary resolution circuitry may maintain a current value of the output signal after expiration of the pulse signal. This may allow the input signal to change during the pulse, e.g., to enable time borrowing by upstream circuitry.
Information query