P83C591 Datasheet (PDF) Download
NXP Semiconductors
P83C591

Key Features

  • Full static 80C51 Central Processing Unit available as OTP, ROM and ROMless
  • 16 Kbytes internal Program Memory expandable externally to 64 Kbytes
  • 512 bytes on-chip Data RAM expandable externally to 64 Kbytes
  • Three 16-bit timers/counters T0, T1 (standard 80C51) and additional T2 (capture & pare)
  • 10-bit ADC with 6 multiplexed analog inputs with fast 8-bit ADC option
  • Two 8-bit resolution, Pulse Width Modulated outputs
  • 32 I/O port pins in the standard 80C51 pinout
  • I2C-bus serial I/O port with byte oriented master and slave functions
  • On-chip Watchdog Timer T3
  • Extended temperature range: -40 to +85°C