半导体学报2011，Vol.32Issue(8)：132-137,6.DOI:10.1088/1674-4926/32/8/085012
Design and implementation of a programming circuit in radiation-hardened FPGA
Design and implementation of a programming circuit in radiation-hardened FPGA
Wu Lihua 1Han Xiaowei 1Zhao Yan 1Liu Zhongli 1Yu Fang 1Stanley L. Chen1
作者信息
- 1. Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
- 折叠
摘要
Abstract
We present a novel programming circuit used in our radiation-hardened field programmable gate array (FPGA) chip.This circuit provides the ability to write user-defined configuration data into an FPGA and then read it back.The proposed circuit adopts the direct-access programming point scheme instead of the typical long token shift register chain.It not only saves area but also provides more flexible configuration operations.By configuring the proposed partial configuration control register,our smallest configuration section can be conveniently configured as a single data and a flexible partial configuration can be easily implemented.The hierarchical simulation scheme,optimization of the critical path and the elaborate layout plan make this circuit work well.Also,the radiation hardened by design programming point is introduced.This circuit has been implemented in a static random access memory (SRAM)-based FPGA fabricated by a 0.5 μm partial-depletion silicon-on-insulator CMOS process.The function test results of the fabricated chip indicate that this programming circuit successfully realizes the desired functions in the configuration and read-back.Moreover,the radiation test results indicate that the programming circuit has total dose tolerance of 1 × 105 rad(Si),dose rate survivability of 1.5 × 1011 rad(Si)/s and neutron fluence immunity of 1 × 1014 n/cm2.关键词
FPGA/ configuration/ read back/ partial configuration/ partial-depletion SOI/ radiation-hardenedKey words
FPGA/ configuration/ read back/ partial configuration/ partial-depletion SOI/ radiation-hardened引用本文复制引用
Wu Lihua,Han Xiaowei,Zhao Yan,Liu Zhongli,Yu Fang,Stanley L. Chen..Design and implementation of a programming circuit in radiation-hardened FPGA[J].半导体学报,2011,32(8):132-137,6.
