P87C661X2BBD,157

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

P87C661X2FA,529

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