AT91R40008 32位ARM单片机
| Status |
Production |
| SRAM (Bytes) |
256K |
| External Bus Interface |
1 |
| Peripheral DMA Channels |
4 |
| Max. Clock Speed (MHz) |
75 |
| I/O Pins |
32 |
| USART/DBGU |
2/- |
| 16-bit Timers |
3 |
| Watchdog Timer |
1 |
| ARM Core |
7TDMI |
| I/O Voltage Domain (V) |
3.3 |
| Single Supply |
N |
| Pb-Free Packages |
LQFP 100 |
AT91R40008 描述
The AT91R40008 features 256K bytes of on-chip SRAM, an External Bus Interface, a 3-channel Timer/Counter, 2 USARTs, a Watchdog Timer and advanced power-saving features.The AT91X408XX Series does not feature Boundary-scan cells on digital pins. The JTAG/ICE port is only used as debug port.
The AT91R40008 microcontroller 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 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 Atmel’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 computeintensive embedded control applications.
AT91R40008 主要参数
- Status:Production
- SRAM (Bytes):256K
- USART/DBGU :2/-
- Max. Clock Speed ( :75
- I/O Pins :32
- External Bus Inter :1
- Peripheral DMA Cha :4
- 16-bit Timers :3
- Watchdog Timer :1
- ARM Core :7TDMI
- I/O Voltage Domain :3.3
- Single Supply :Y
- 绿色封装:LQFP 100
AT91R40008 产品特性
- 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
– EmbeddedICE™ (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 Maskable, 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)
AT91R40008 订购型号
| Ordering Code |
Package |
Package Type |
Operating Temperature Range |
| AT91R40008-66AU |
LQFP 100 |
Green |
Industrial
(-40° C to 85° C) |
AT91R40008 应用技术支持与电子电路设计开发资源下载
- AT91R40008 数据手册DataSheet 下载. PDF
- ARM7TDMI 技术白皮书
- AT91SAM 系列产品选型指南(Brochure, 2 pages, revision E, updated 2/09)
Product selection guide to Atmel's AT91SAM microcontrollers that give immediate access to market-leading ARM processors.
- Atmel's ARM-based Microcontroller Excels in Real-Time (White Paper, 6 pages, revision A, updated 3/01)
Applications such as mobile communicators, PDAs, solid-state music players and internet appliances demand the best possible real-time performance. Atmel's AT91 series of ARM-based microcontrollers incorporates a number of advanced features that enhance the real-time performance of the ARM7TDMI core, making it ideal for applications of this nature.
