P87C52UBAA,512

Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 8K OTP 44-PLCC

P87C52UBPN,112

Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 256 RAM 40DIP