AT91M55800A

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 TQFP or 176-ball BGA Package



Pinout




Description

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 instru-ction 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 AT91M55800A.

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 costeffec-tive solution to many ultra low-power applications.