P87C554SBAA,512
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 16K OTP 68PLCC
P87C554SFAA,512
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU 16K OTP 68PLCC