P89V51RB2BBC,557
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 1024 RAM 44TQFP
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P89V51RB2FA,529
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 16K 44-PLCC
P89V51RB2FN,112
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 16K 40-DIP