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AT91SAM7A2 Datasheet, PDF (1/15 Pages) ATMEL Corporation – ARM Thumb - based Microcontrollers | |||
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Features
⢠ARM7TDMI® ARM® Thumb® Processor Core
â High Performance 32-bit RISC
â High-density 16-bit Instruction set (Thumb)
â Leader in MIPS/Watt
â Embedded ICE (In Circuit Emulation)
⢠16 Kbytes Internal SRAM
⢠Fully Programmable External Bus Interface (EBI)
â Maximum External Address Space of 6 Mbytes, Up to Four Chip Select Lines
⢠8-level Priority, Vectored Interrupt Controller
â Three External Interrupts Including One Fast Interrupt Line
⢠Ten Channel Peripheral Data Controller (PDC)
⢠57 Programmable I/O Lines
⢠Four 16-bit General Purpose Timers (GPT)
â Three Configurable Modes: Counter, PWM, Capture
â Four External Clock Inputs, Three Multi-purpose I/O Pins per Timer
⢠Four 16-bit Simple Timers (ST)
⢠Four Channel 16-bit Pulse Width Modulation (PWM)
⢠Four CAN Controllers 2.0A and 2.0B Full CAN
â One with 32 Buffers, Three with 16 Buffers
⢠Two USARTs
â Support for J1587 and LIN Protocols
⢠One Master/Slave SPI Interface
â 8 to 16-bit Programmable Data Length
â Four External Serial Peripheral Chip Selects
⢠Two 8-channel 10-bit Analog to Digital Converters (ADC)
⢠Two 16-bit Capture Modules (CAPT)
⢠Programmable Watch Timer (WT)
⢠Programmable Watchdog (WD)
⢠Power Management Controller (PMC)
â 32 kHz Oscillator, Main Oscillator and PLL
⢠IEEE 1149.1 JTAG Boundary-scan on all Digital Pins
⢠Fully Static Operation: 0 Hz to 30 MHz at VDDCORE=3.3V, 85°C
⢠3.0V to 5.5V Operating Voltage Range
⢠3.0V to 3.6V Core, Memory and Analog Voltage Range
⢠-40° to +85°C Operating Temperature Range
⢠Available in a 176-lead LQFP Package
AT91 ARM®
Thumb®- based
Microcontrollers
AT91SAM7A2
Summary
Description
The AT91SAM7A2 is based on the ARM7TDMI embedded processor. 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 AT91SAM7A2 has a direct connection to off-chip memory, including Flash,
through the fully programmable External Bus Interface.
An 8-level priority vectored Interrupt Controller in conjunction with the Peripheral Data
Controller significantly improves the real time performance of the device. The device
is manufactured using high-density CMOS technology.
By combining the ARM7TDMI processor with an on-chip SRAM, and a wide range of
peripheral functions, including USART, SPI, CAN Controllers, Timer Counter and Ana-
log-to-Digital Converters, on a monolithic chip, the AT91SAM7A2 is a powerful device
that provides a flexible, cost-effective solution to many compute-intensive embedded
control applications in the automotive and industrial world.
6021ASâATARMâ03/04
Note: This is a summary document. A complete document
is in preparation.
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