参数资料
型号: AT91SAM7A3-AU
厂商: Atmel
文件页数: 16/39页
文件大小: 0K
描述: IC ARM7 MCU FLASH 256K 100LQFP
产品培训模块: SAM9 MPU Boot Solutions & Application Deployment
MCU Product Line Introduction
标准包装: 90
系列: AT91SAM
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 60MHz
连通性: CAN,I²C,MMC,SPI,SSC,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 62
程序存储器容量: 256KB(256K x 8)
程序存储器类型: 闪存
RAM 容量: 32K x 8
电压 - 电源 (Vcc/Vdd): 1.65 V ~ 1.95 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
包装: 托盘
配用: AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
AT91SAM7A3-EK-ND - KIT EVAL FOR AT91SAM7A3
23
6042DS–ATARM–14-Dec-06
AT91SAM7A3
9.6
Debug Unit
Comprises
– One two-pin UART
– One interface for the Debug Communication Channel (DCC) support
– One set of chip ID registers
– One interface allowing ICE access prevention
Two-pin UART
– USART-compatible user interface
– Programmable baud rate generator
– Parity, framing and overrun error
– Automatic Echo, Local Loopback and Remote Loopback Channel Modes
Debug Communication Channel Support
– Offers visibility of COMMRX and COMMTX signals from the ARM Processor
Chip ID Registers
– Identification of the device revision, sizes of the embedded memories, set of
peripherals
– Chip ID is 0x260A0941 (Version 1)
9.7
Period Interval Timer
20-bit programmable counter plus 12-bit interval counter
9.8
Watchdog Timer
12-bit key-protected Programmable Counter running on prescaled SLCK
Provides reset or interrupt signals to the system
Counter may be stopped while the processor is in debug state or in idle mode
9.9
Real-time Timer
32-bit free-running counter with alarm
Programmable 16-bit prescaler for SCLK accuracy compensation
9.10
Shutdown Controller
Software programmable assertion of the SHDW open-drain pin
De-assertion programmable with the pins WKUP0, WKUP1 and FWKUP
9.11
PIO Controllers A and B
The PIO Controllers A and B respectively control 32 and 30 programmable I/O Lines
Fully programmable through Set/Clear Registers
Multiplexing of two peripheral functions per I/O Line
For each I/O Line (whether assigned to a peripheral or used as general purpose I/O)
– Input change interrupt
– Half a clock period Glitch filter
– Multi-drive option enables driving in open drain
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