P87C54SBAA,512

Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 16K OTP 44-PLCC

P87C54SBPN,112

Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 16K OTP 40-DIP