AT91M55800A_04 Datasheet, PDF (1/29 Pages) ATMEL Corporation – AT91 ARM Thumb Microcontroller

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)
– 128 M Bytes of Maximum External Address Space
– 8 Chip Selects
– Software Programmable 8-/16-bit External Databus
• 8-level Priority, Individually Maskable, Vectored Interrupt Controller
– 8 External Interrupts, Including a High-priority, Low-latency Interrupt Request
• 58 Programmable I/O Lines
• 6-channel 16-bit Timer/Counter
– Six External Clock Inputs
– 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 MHz 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 Internal Frequency Range at V_DDCORE = 3.0 V, 85°C
• 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
AT91
ARM^® Thumb^®
Microcontroller
AT91M55800A
Electrical
Characteristics
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 perfor-
mance 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 prior-
ity 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 combin-
ing the ARM7TDMI processor core with an on-chip SRAM and a wide range of
peripheral functions, analog interfaces and low-power oscillators on a monolithic chip,
Rev. 1727E–ATARM–01/04
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