Product Overview

The AT91M55800A is a member of the Atmel AT91 16/32-bit microcontroller family, which is based on the ARM7TDMI processor core. This processor has a high-performance 32-bit RISC architecture with a high-density 16-bit instruction set and very low power consumption. In addition, a large number of internally banked registers result in very fast exception handling, making the device ideal for real-time control applications. The fully programmable External Bus Interface provides a direct connection to off-chip memory in as fast as one clock cycle for a read or write operation. An eight-level priority vectored interrupt controller in conjunction with the peripheral data controller significantly improve the real-time performance of the device. The device is manufactured using Atmel’s high-density CMOS technology. By combining the ARM7TDMI processor core with an on-chip SRAM, a wide range of peripheral functions, analog interfaces and low-power oscillators on a monolithic chip, the Atmel AT91M55800A is a powerful microcontroller that provides a highly-flexible and cost-effective solution to many ultra low-power applications.

Features

• Utilizes the ARM7TDMI® ARM® Thumb® Processor Core
  • High-performance 32-bit RISC Architecture
  • High-density 16-bit Instruction Set
  • Leader in MIPS/Watt
  • Embedded ICE (In-Circuit Emulation)
• 8K Bytes Internal SRAM
• Fully-programmable External Bus Interface (EBI)
  • Maximum External Address Space of 128M Bytes
  • Eight Chip Selects
  • Software Programmable 8/16-bit External Databus
• 8-level Priority, Individually Maskable, Vectored Interrupt Controller
  • Seven External Interrupts, Including a High-priority, Low-latency Interrupt Request
• Fifty-eight Programmable I/O Lines
• 6-channel 16-bit Timer/Counter
  • Six External Clock Inputs and Two Multi-purpose I/O Pins per Channel
• Three USARTs
• Master/Slave SPI Interface
  • 8-bit to 16-bit Programmable Data Length
  • Four External Slave Chip Selects
• Programmable Watchdog Timer
• 8-channel 10-bit ADC
• 2-channel 10-bit DAC
• Clock Generator with On-chip Main Oscillator and PLL for Multiplication
  • 3 to 20 MHz Frequency Range Main Oscillator
• Real-time Clock with On-chip 32 kHz Oscillator
  • Battery Backup Operation and External Alarm
• 8-channel Peripheral Data Controller for USARTs and SPIs
• Advanced Power Management Controller (APMC)
  • Normal, Wait, Slow, Standby and Power-down modes
• IEEE 1149.1 JTAG Boundary-scan on all Digital Pins
• Fully Static Operation: 0 Hz to 33 MHz
• 2.7V to 3.6V Core Operating Range
• 2.7V to 5.5V I/O Operating Range
• 2.7V to 3.6V Analog Operating Range
• 1.8V to 3.6V Backup Battery Operating Range
• 2.7V to 3.6V Oscillator and PLL Operating Range
• -40° C to +85°C Temperature Range
• Available in a 176-lead LQFP or 176-ball BGA Package