AT91SAM7S321-AU 32位ARM单片机LQFP-64封装

Status Production
Flash (Bytes) 32K
SRAM (Bytes) 8K
RTC/RTT -/1
10-bit ADC Channels 8
Peripheral DMA Channels 11
Max. Clock Speed (MHz) 55
I/O Pins 32
Enhanced USART 2
USART/DBGU -/1
SPI 1
TWI 1
SSC 1
USB Device FS
PWM Controller 4
High Current Pads 4
16-bit Timers 3
Period Interval Timer 1
Watchdog Timer 1
Power-On-Reset 1
Brown Out Detection 1
On-chip RC Oscillator 1
Crystal Oscillator/PLL 1/1
ARM Core 7TDMI
I/O Voltage Domain (V) 3.3
In-System Programming Y
Single Supply Y
Pb-Free Packages LQFP 64
QFN 64
AT91SAM7S321-AU 描述

The AT91SAM7S321 is a low pincount Flash microcontroller based on the 32-bit ARM7TDMI RISC processor. It features 32K bytes of embedded high-speed Flash with sector lock capabilities and a security bit, and 8K bytes of SRAM. The integrated proprietary SAM-BA Boot Assistant enables in-system programming of the embedded Flash. Its extensive peripheral set includes a USB 2.0 Full Speed Device Port, USARTs, SPI, SSC, TWI and an 8-channel 10-bit ADC. Its Peripheral DMA Controller channels eliminate processor bottlenecks during peripheral-to-memory transfers. Its System Controller manages interrupts, clocks, power, time, debug and reset, significantly reducing the external chip count and minimizing power consumption. In industrial temperature, worse case conditions the maximum clock frequency is 55MHz. Typical core supply is 1.8V, I/Os are supplied at 1.8V or 3.3V and are 5V tolerant. An integrated Voltage Regulator permits single supply at 3.3V. The AT91SAM7S321 is supplied in a 64-lead LQFP or QFN Green package. It is supported by an Evaluation Board and extensive application development tools. The AT91SAM7S321 is a general-purpose microcontroller, providing an ideal migration path for 8-bit applications requiring additional performance, USB connectivity and extended memory.

AT91SAM7S321-AU 特性
AT91SAM7S321-AU 订购型号
Ordering Code Package Package Type Operating Temperature Range
AT91SAM7S321-AU LQFP 64 Green Industrial (-40° C to 85° C)
AT91SAM7S321-MU QFN 64 Green Industrial (-40° C to 85° C)
AT91SAM7S321-AU 应用技术支持与电子电路设计开发资源下载
  1. AT91SAM7S321数据手册DataSheet 下载. PDF(简洁版)
  2. AT91SAM7S321英文数据手册DataSheet 下载. PDF(完整版)
  3. ARM7TDMI 技术白皮书
  4. 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.
  5. 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.