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P89V51RD2FA,512
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 64K 44-PLCC
P89V51RD2FBC,557
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 64K 44-TQFP
P89V51RD2FN,112
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 64K 40-DIP