Описание
The AT91R40008 microcontroller is a member 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. Furthermore, it features 256K bytes of on-chip SRAM and a large number of internally banked registers, resulting in very fast exception handling, and making the device ideal for real-time control applications. The AT91R40008 microcontroller features a direct connection to off-chip memory, including Flash, through the fully programmable External Bus Interface (EBI). 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 ’s high-density CMOS technology. By combining the ARM7TDMI processor core with a large, on-chip, high-speed SRAM and a wide range of peripheral functions on a monolithic chip, the AT91R40008 is a powerful microcontroller that offers a flexible and high-performance 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
- Little-endian
- Embedded ICE™ (In-circuit Emulation)
- 8-, 16- and 32-bit Read and Write Support
- 256K Bytes of On-chip SRAM
- 32-bit Data Bus
- Single-clock Cycle Access
- Fully Programmable External Bus Interface (EBI)
- Maximum External Address Space of 64M Bytes
- Up to Eight Chip Selects
- Software Programmable 8/16-bit External Data Bus
- Eight-level Priority, Individually Mask able, Vectored Interrupt Controller
- Four External Interrupts, including a High-priority, Low-latency Interrupt Request
- 32 Programmable I/O Lines
- Three-channel 16-bit Timer/Counter
- Three External Clock Inputs
- Two Multi-purpose I/O Pins per Channel
- Two USARTs
- Two Dedicated Peripheral Data Controller (PDC) Channels per USART
- Programmable Watchdog Timer
- Advanced Power-saving Features
- CPU and Peripheral Can be Deactivated Individually
- Fully Static Operation:
- 0 Hz to 75 MHz Internal Frequency Range at VDDCORE = 1.8V, 85° C
- 2.7V to 3.6V I/O Operating Range
- 1.65V to 1.95V Core Operating Range
- -40° C to +85° C Temperature Range
- Available in 100-lead LQFP Package (Green)
