低功耗非对称性可调STDP突触电路设计

Microelectronics(2022)

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Abstract
基于65 nm CMOS工艺设计了一种可用于脉冲神经网络系统的低功耗、高能效、结构紧凑的突触电路.突触电路采用开关电容电路结构,直接接收来自神经元电路的脉冲信号,根据脉冲时间依赖可塑性(STDP)学习规则调节突触权重,并实现了权重学习窗口的非对称性调节,使突触电路可以适应不同情况.仿真结果表明,突触电路耗能约为0.4 pJ/spike.
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