INTEGRATED CIRCUITS 89C536/89C538 80C51 8-bit mic.
P89C536 - 80C51 8-bit microcontroller family 16K/64K/512 FLASH
89C536 - CMOS single-chip 8-bit microcontrollers with FLASH program memory
89C536 - 80C51 8-bit microcontroller family 16K/64K/512 FLASH