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AT91M42800A_1 Datasheet, PDF (1/27 Pages) ATMEL Corporation – AT91 ARM Thumb Microcontrollers | |||
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Features
⢠Utilizes the ARM7TDMI® ARM® Thumb® Processor Core
â High-performance 32-bit RISC Architecture
â High-density 16-bit Instruction Set
â Leader in MIPS/Watt
â Embedded ICE (In-circuit Emulation)
⢠8K Bytes Internal SRAM
⢠Fully Programmable External Bus Interface (EBI)
â Maximum External Address Space of 64M Bytes
â Up to 8 Chip Selects
â Software Programmable 8/16-bit External Data Bus
⢠8-channel Peripheral Data Controller
⢠8-level Priority, Individually Maskable, Vectored Interrupt Controller
â 5 External Interrupts, Including a High-priority, Low-latency Interrupt Request
⢠54 Programmable I/O Lines
⢠6-channel 16-bit Timer/Counter
â 6 External Clock Inputs, 2 Multi-purpose I/O Pins per Channel
⢠2 USARTs
â 2 Dedicated Peripheral Data Controller (PDC) Channels per USART
â Support for up to 9-bit Data Transfers
⢠2 Master/Slave SPI Interfaces
â 2 Dedicated Peripheral Data Controller (PDC) Channels per SPI
â 8- to 16-bit Programmable Data Length
â 4 External Slave Chip Selects per SPI
⢠3 System Timers:
â Period Interval Timer (PIT); Real-time Timer (RTT); Watchdog Timer (WDT)
⢠Power Management Controller (PMC)
â CPU and Peripherals Can be Deactivated Individually
⢠Clock Generator with 32.768 kHz Low-power Oscillator and PLL
â Support for 38.4 kHz Crystals
â Software Programmable System Clock (up to 33 MHz)
⢠IEEE® 1149.1 JTAG Boundary Scan on All Active Pins
⢠Fully Static Operation: 0 Hz to 33 MHz Internal Frequency Range
at VDDCORE = 3.0V, 85° C
⢠2.7V to 3.6V Core and PLL Operating Voltage Range; 2.7V to 5.5V I/O Operating Voltage
Range
⢠-40° C to +85° C Temperature Range
⢠Available in a 144-lead LQFP Package (Green) and a 144-ball BGA Package (RoHS-
compliant)
AT91
ARM Thumb
Microcontrollers
AT91M42800A
Summary
1. Description
The AT91M42800A 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 applica-
tions. The AT91 ARM-based MCU family also features Atmelâs high-density, in-
system programmable, nonvolatile memory technology. The AT91M42800A has a
direct connection to off-chip memory, including Flash, through the External Bus
Interface.
Rev. 1779ESâATARMâ14-Apr-06
Note: This is a summary document. A complete document is
available on our web site at www.atmel.com.
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