IS89C52 IS89C52 CMOS SINGLE CHIP 8-BIT MICROCONTR.
IS89C52-24PL - CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
IS89C52-24PLI - CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH