AT89S64 - ATMEL

AT89S64 8-bit Flash Microcontroller

Features • 80C52 Compatible – 8051 Instruction Compatible – Six 8-bit I/O Ports (64 Pins or 68 Pins Versions) – Four 8-bit I/O Ports (44 Pins Version) – Three 16-bit Timer/Counters – 256 Bytes Scratch Pad RAM – 9 Interrupt Sources with 4 Priority Levels • Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply (AT89S64 Only) • ISP (In-System Pr.

Features

• 80C52 Compatible
  – 8051 Instruction Compatible
  – Six 8-bit I/O Ports (64 Pins or 68 Pins Versions)
  – Four 8-bit I/O Ports (44 Pins Version)
  – Three 16-bit Timer/Counters
  – 256 Bytes Scratch Pad RAM
  – 9 Interrupt Sources with 4 Priority Levels
• Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply (AT89S64 Only)
• ISP (In-System Programming) Using Standard VCC Power Supply
• 2048 Bytes Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Loader
• High-speed Architecture
  – In Standard Mode: 40 MHz (Vcc 2.7V to 5.5V, both Internal and external code execut.