Описание
The AT91X40 Series is a subset of the 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 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 AT91X40 Series features a direct connection to off-chip memory, including Flash, through the fully programmable External Bus Interface (EBI). An eight-level priority vectored interrupt controller, in conjunction with the Peripheral Data Controller significantly improve the real-time performance of the device. The devices are manufactured using ’s high-density CMOS technology. By combining the ARM7TDMI processor core with on-chip high-speed memory and a wide range of peripheral functions on a monolithic chip, the AT91X40 Series is a family of powerful microcontrollers that offer a flexible, cost-effective solution to many compute-intensive embedded control applications.
- Incorporates 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)
- On-chip SRAM and/or ROM
- 32-bit Data Bus
- Single-clock Cycle Access
- Fully Programmable External Bus Interface (EBI)
- Maximum External Address Space of 64M Bytes
- Up to 8 Chip Selects
- Software Programmable 8/16-bit External Databus
- 8-level Priority, Individually Mask able, Vectored Interrupt Controller
- 4 External Interrupts, Including a High-priority Low-latency Interrupt Request
- 32 Programmable I/O Lines
- 3-channel 16-bit Timer/Counter
- 3 External Clock Inputs
- 2 Multi-purpose I/O Pins per Channel
- 2 USARTs
- 2 Dedicated Peripheral Data Controller (PDC) Channels per USART
- Programmable Watchdog Timer
- Advanced Power-saving Features
- CPU and Peripheral Can be Deactivated Individually
- Available in a 100-lead TQFP Package
