PRELIMINARY
6021BS–ATARM–07/04
Features
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ARM7TDMI
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ARM
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Processor Core
– High Performance 32-bit RISC
– High-density 16-bit Instruction set (Thumb)
– Leader in MIPS/Watt
– Embedded ICE (In Circuit Emulation)
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16 Kbytes Internal SRAM
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Fully Programmable External Bus Interface (EBI)
– Maximum External Address Space of 6 Mbytes, Up to Four Chip Select Lines
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8-level Priority, Vectored Interrupt Controller
– Three External Interrupts Including One Fast Interrupt Line
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Ten Channel Peripheral Data Controller (PDC)
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57 Programmable I/O Lines
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Four 16-bit General Purpose Timers (GPT)
– Three Configurable Modes: Counter, PWM, Capture
– Four External Clock Inputs, Three Multi-purpose I/O Pins per Timer
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Four 16-bit Simple Timers (ST)
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Four Channel 16-bit Pulse Width Modulation (PWM)
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Four CAN Controllers 2.0A and 2.0B Full CAN
– One with 32 Buffers, Three with 16 Buffers
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Two USARTs
– Support for J1587 and LIN Protocols
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One Master/Slave SPI Interface
– 8 to 16-bit Programmable Data Length
– Four External Serial Peripheral Chip Selects
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Two 8-channel 10-bit Analog to Digital Converters (ADC)
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Two 16-bit Capture Modules (CAPT)
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Programmable Watch Timer (WT)
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Programmable Watchdog (WD)
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Power Management Controller (PMC)
– 32 kHz Oscillator, Main Oscillator and PLL
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IEEE 1149.1 JTAG Boundary-scan on all Digital Pins
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Fully Static Operation: 0 Hz to 30 MHz at VDDCORE=3.3V, 85°C
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3.0V to 5.5V Operating Voltage Range
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3.0V to 3.6V Core, Memory and Analog Voltage Range
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-40° to +85°C Operating Temperature Range
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Available in a 176-lead LQFP Package
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.
AT91 ARM
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Thumb
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Microcontrollers
AT91SAM7A2
Summary
