关键词: 配置芯片, FPGA, MTM反熔丝工艺, 电荷泵

Abstract: A programming and readout circuit for FPGA configuration chip is designed based on 0.18 μm 1P6M metal to metal (MTM) anti-fuse process. Two programming methods by bit and by byte are provided, and the flexibility of programming is improved. The slave charge pump of the programming high voltage circuit uses a distributed layout, which improves the accuracy of the programming voltage. The pull-up current and pulse width can be programmed on the readout circuit, and the reliability of the readout circuit is improved. In addition, the data output register adopts three-mode redundancy structure, which improves the radiation resistance of the configuration chip.

Key words: configuration chip, FPGA, MTM anti-fuse process, charge pump