AT91M42800A 32位ARM单片机
| Status |
Production |
| SRAM (Bytes) |
8K |
| External Bus Interface |
1 |
| RTC/RTT |
-/1 |
| Peripheral DMA Channels |
8 |
| Max. Clock Speed (MHz) |
33 |
| I/O Pins |
54 |
| USART/DBGU |
2/- |
| SPI |
2 |
| 16-bit Timers |
6 |
| Period Interval Timer |
1 |
| Watchdog Timer |
1 |
| Crystal Oscillator/PLL |
39815 |
| ARM Core |
7TDMI |
| I/O Voltage Domain (V) |
3.3/5.0 |
| Single Supply |
Y |
| Pb-Free Packages |
LBGA 144 |
| LQFP 144 |
AT91M42800A 产品描述
The AT91M42800A is a member of theAtmel 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 AT91 ARM-based MCU family also features Atmel’s high-density, in-system programmable, nonvolatile memory technology.
TheAT91M42800A has a direct connection to off-chip memory, including Flash, through the External Bus Interface. The Power Management Controller allows the user to adjust device activity according to system requirements, and, with the 32.768 kHz low-power oscillator, enables theAT91M42800A to reduce power requirements to an absolute minimum.
TheAT91M42800A is manufactured using Atmel’s high-density CMOS technology. By combining the ARM7TDMI processor core with on-chip SRAM and a wide range of peripheral functions including timers, serial communication controllers and a versatile clock generator on a monolithic chip, the AT91M42800A provides a highly flexible and cost-effective solution to many compute-intensive applications.
AT91M42800A 参数
- Status:Production
- SRAM (Bytes):8K
- USART/DBGU:2/-
- Max. Clock Speed (:33
- I/O Pins:54
- External Bus Inter:1
- Peripheral DMA Cha:8
- SPI:2
- 16-bit Timers:6
- Period Interval Ti :1
- Watchdog Timer :1
- RTC/RTT :-/1
- Crystal Oscillator :1/2
- ARM Core :7TDMI
- I/O Voltage Domain: 3.3/5.0
- Single Supply : Y
- 绿色封装: LBGA 144 LQFP 144
AT91M42800A 特点
- Utilizes 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) 8K Bytes Internal SRAM
- 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 Reque
- 54 Programmable I/O Lines
- 6-channel 16-bit Timer/Counter
– 6 External Clock Inputs, 2 Multi-purpose I/O Pins per Channel
- 2 USARTs
– 2 Dedicated Peripheral Data Controller (PDC) Channels per USART
– Support for up to 9-bit Data Transfers
- 2 Master/Slave SPI Interfaces
– 2 Dedicated Peripheral Data Controller (PDC) Channels per SPI
– 8- to 16-bit Programmable Data Length
– 4 External Slave Chip Selects per SPI
- 3 System Timers
– Period Interval Timer (PIT); Real-time Timer (RTT); Watchdog Timer (WDT)
- Power Management Controller (PMC)
– CPU and Peripherals Can be Deactivated Individually
- Clock Generator with 32.768 kHz Low-power Oscillator and PLL
– Support for 38.4 kHz Crystals
– Software Programmable System Clock (up to 33 MHz)
- IEEE® 1149.1 JTAG Boundary Scan on All Active Pins
- Fully Static Operation: 0 Hz to 33 MHz, Internal Frequency Range at VDDCORE = 3.0V,
85°C
- 2.7V to 3.6V Core and PLL Operating Voltage Range; 2.7V to 5.5V I/O Operating Voltage
Range
- -40° C to +85°C Temperature Range
- Available in a 144-lead LQFP Package (Green) and a 144-ball BGA Package (RoHS
compliant)
AT91M42800A 订购型号
| Ordering Code |
Package |
Package Type |
Operating Temperature Range |
| AT91M42800A-33CJ |
BGA 144 |
RoHS-compliant |
-40° C to +85°C |
| AT91M42800A-33AU |
LQFP 144 |
Green |
-40° C to +85°C |
AT91M42800A 应用技术支持与电子电路设计开发资源下载
- AT91M42800A 英文数据手册DataSheet 下载. PDF (完整版)
- 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.
