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AT91
ARM
®
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®
Microcontrollers
AT91M43300
Features
• Utilizes the ARM7TDMI
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ARM
®
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Processor Core
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
– Leader in MIPS/Watt
– Embedded ICE (In-Circuit Emulation)
• 3K Bytes Internal RAM
• Fully-programmable External Bus Interface (EBI)
– Maximum External Address Space of 64M Bytes
– Up to 8 Chip Selects
– Software-programmable 8/16-bit External Data Bus
• 8-channel Peripheral Data Controller
• 8-level Priority, Individually-maskable, Vectored Interrupt Controller
– 5 External Interrupts, including a High-priority, Low-latency Interrupt Request
• 58 Programmable I/O Lines
• 6-channel 16-bit Timer/Counter
– 6 External Clock Inputs
– 2 Multi-purpose I/O Pins per Channel
• 3 USARTs
– 2 Dedicated Peripheral Data Controller (PDC) Channels per USART
– Support for up to 9-bit Data Transfers
• Master/Slave SPI Interface
– 2 Dedicated Peripheral Data Controller (PDC) Channels
– 8- to 16-bit Programmable Data Length
– 4 External Slave Chip Selects
• Programmable Watchdog Timer
• Power Management Controller (PMC)
– CPU and Peripherals can be Deactivated Individually
• IEEE 1149.1 JTAG Boundary Scan on all Active Pins
• Fully Static Operation: 0 Hz to 25 MHz (12 MHz @ 1.8V)
• 1.8V to 3.6V Core Operating Voltage Range
• 2.7V to 5.5V I/O Operating Voltage Range
• -40° to +85°C Operating Temperature Range
• Available in a 144-ball PBGA Package
Description
The AT91M43300 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 instruction set and features 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 AT91 ARM-based MCU family
also features Atmel’s high-density, in-system programmable, nonvolatile memory
technology.
The AT91M43300 has a direct connection to off-chip memory, including Flash,
through the fully-programmable External Bus Interface.
The AT91M43300 is manufactured using Atmel’s high-density CMOS technology. By
combining the ARM7TDMI microcontroller core with an on-chip SRAM, and a wide
range of peripheral functions on a monolithic chip, the AT91M43300 provides a highly-
flexible and cost-effective solution to many compute-intensive multi-processor appli-
cations.
The compact BGA package reduces required board space to an absolute minimum.
Rev. 1322A–10/99
