AT91M40800 32位ARM单片机
| Status |
Production |
| SRAM (Bytes) |
8K |
| External Bus Interface |
1 |
| Peripheral DMA Channels |
4 |
| Max. Clock Speed (MHz) |
40 |
| I/O Pins |
32 |
| USART/DBGU |
2/- |
| 16-bit Timers |
3 |
| Watchdog Timer |
1 |
| ARM Core |
7TDMI |
| I/O Voltage Domain (V) |
1.8/3.3 |
| Single Supply |
Y |
| Pb-Free Packages |
LQFP 100 |
AT91M40800 描述
The AT91M40800 features 8K bytes of on-chip SRAM, an External Bus Interface, a 3-channel Timer/Counter, 2 USARTs, a Watchdog Timer and advanced power-saving features.
BSDL software files are not available. The AT91X408XX Series does not feature Boundary-scan cells on digital pins. The JTAG/ICE port is only used as debug port.
The AT91M40800 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. 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 AT91M40800 microcontroller 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 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 on-chip high-speed memory and a wide range of peripheral functions on a monolithic chip, the AT91M40800 is a powerful microcontroller that offers a flexible, cost-effective solution to many compute-intensive embedded control applications.
AT91M40800 主要参数
- Status:Production
- SRAM (Bytes):8K
- USART/DBGU :2/-
- Max. Clock Speed ( :40
- 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 :1.8/3.3
- Single Supply :Y
- 绿色封装:LQFP 100
AT91M40800 特性
- Incorporates the ARM7TDMI(R) ARM(R) Thumb(R) Processor Core
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
– Leader in MIPS/Watt
– EmbeddedICETM
- 8K Bytes 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 8 Chip Selects
– Software Programmable 8/16-bit External Databus
- 8-level Priority, Individually Maskable, 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
- Fully Static Operation:
– 0 Hz to 40 MHz Internal Frequency Range at 3.0V, 85°C
- 1.8V to 3.6V Operating Range
- -40° C to +85°C Temperature Range
- Available in a 100-lead LQFP Package (Green)
AT91M40800 订购型号
| Ordering Code |
Package |
Package Type |
Operating Temperature Range |
| AT91M40800-33AU |
LQFP100 |
Green |
Industrial (-40° C to 85° C) |
AT91M40800 应用技术支持与电子电路设计开发资源下载
- AT91M40800 数据手册DataSheet 下载. PDF
- AT91M40800 数据手册DataSheet 下载. PDF（简洁版）
- 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.