- Patent Title: Compute-in-memory (CIM) bit cell circuits each disposed in an orientation of a cim bit cell circuit layout including a read word line (RWL) circuit in a cim bit cell array circuit
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Application No.: US17404378Application Date: 2021-08-17
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Publication No.: US11626156B2Publication Date: 2023-04-11
- Inventor: Xiaonan Chen , Zhongze Wang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Qualcomm Incorporated
- Main IPC: G11C7/12
- IPC: G11C7/12 ; G11C11/413 ; G11C11/54 ; G11C7/10 ; G11C11/419

Abstract:
Compute-in-memory (CIM) bit cell array circuits include CIM bit cell circuits for multiply-accumulate operations. The CIM bit cell circuits include a memory bit cell circuit for storing a weight data in true and complement form. The CIM bit cell circuits include a true pass-gate circuit and a complement pass-gate circuit for generating a binary product of the weight data and an activation input on a product node. An RWL circuit couples the product node to a ground voltage for initialization. The CIM bit cell circuits also include a plurality of consecutive gates each coupled to at least one of the memory bit cell circuit, the true pass-gate circuit, the complement pass-gate circuit, and the RWL circuit. Each of the CIM bit cell circuits in the CIM bit cell array circuit is disposed in an orientation of a CIM bit cell circuit layout including the RWL circuit.
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