P80C31SBAA Datasheet, PDF (35/38 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V)

Philips Semiconductors
80C51 8-bit microcontroller family
4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V),
low power, high speed (33 MHz), 128/256 B RAM
DIP40: plastic dual in-line package; 40 leads (600 mil)
Product specification
80C51/87C51/80C52/87C52
SOT129-1
2000 Aug 07
35