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[会议论文]

A 55nm 1-to-8 bit Configurable 6T SRAM based Computing-in-Memory Unit-Macro for CNN-based AI Edge Processors

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author:

Zhang, Zhixiao (Zhang, Zhixiao.) [1] | Chen, Jia-Jing (Chen, Jia-Jing.) [2] | Si, Xin (Si, Xin.) [3] | Unfold

Indexed by:

CPCI-S

Abstract:

This work presents a 1-to-8 bit configurable SRAM CIM unit-macro using (1) a hybrid structure combining 6T-SRAM in-memory binary product-sum (IMBPS) with digital near-memory-computing multi-bit-PS accumulation (DNMPSA) to achieve high read accuracy and compact area, (2) a column-based place-value-grouped weight mapping (CPVGWM) and serial-bit input mapping (SBIN) scheme to facilitate reconfiguration and increase array efficiency for various input/weight precision. A 4Kb configurable 6T-SRAM CIM unit-macro was fabricated using a 55nm CMOS process and foundry 6T cells. The resulting macro achieved 3.5ns access time with 3b PS outputs and gained a 3.91-50x improvement in figure-of-merit, compared to previous SRAM-CIMs.

Keyword:

AI edge processor CIM CNN SRAM

Community:

  • [ 1 ] [Zhang, Zhixiao]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 2 ] [Chen, Jia-Jing]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 3 ] [Si, Xin]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 4 ] [Tu, Yung-Ning]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 5 ] [Su, Jian-Wei]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 6 ] [Huang, Wei-Hsing]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 7 ] [Wang, Jing-Hong]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 8 ] [Wei, Wei-Chen]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 9 ] [Chiu, Yen-Cheng]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 10 ] [Hong, Je-Min]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 11 ] [Liu, Ren-Shuo]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 12 ] [Hsieh, Chih-Cheng]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 13 ] [Tang, Kea-Tiong]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 14 ] [Chang, Meng-Fan]Natl Tsing Hua Univ, Hsinchu, Taiwan
  • [ 15 ] [Zhang, Zhixiao]Fuzhou Univ, Fuzhou, Peoples R China
  • [ 16 ] [Su, Jian-Wei]Ind Technol Res Inst, Hsinchu, Taiwan
  • [ 17 ] [Sheu, Shyh-Shyuan]Ind Technol Res Inst, Hsinchu, Taiwan
  • [ 18 ] [Li, Sih-Han]Ind Technol Res Inst, Hsinchu, Taiwan

Reprint 's Address:

  • 张志晓

    [Zhang, Zhixiao]Natl Tsing Hua Univ, Hsinchu, Taiwan;;[Zhang, Zhixiao]Fuzhou Univ, Fuzhou, Peoples R China

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Source :

2019 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC)

Year: 2019

Page: 217-218

Language: English

Cited Count:

WoS CC Cited Count: 20

30 Days PV: 3

Online/Total:180/10107693
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