P89C664HBA/00,512

Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 64K 44-PLCC

P89C664HBBD/00,557

Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC 80C51 MCU FLASH 64K 44-LQFP