参数资料
型号: AT91SAM7A3-AU
厂商: Atmel
文件页数: 14/39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
21
6042DS–ATARM–14-Dec-06
AT91SAM7A3
9.2
Reset Controller
The Reset Controller is based on three power-on reset cells. It gives the status of the last reset,
indicating whether it is a general reset, a wake-up reset, a software reset, a user reset or a
watchdog reset. In addition, it controls the internal resets and the NRST pin output. It shapes a
signal on the NRST line, guaranteeing that the length of the pulse meets any requirement.
9.3
Clock Generator
The Clock Generator embeds one low-power RC Oscillator, one Main Oscillator and one PLL
with the following characteristics:
– RC Oscillator ranges between 22 KHz and 42 KHz
– Main Oscillator frequency ranges between 3 and 20 MHz
– Main Oscillator can be bypassed
– PLL output ranges between 80 and 220 MHz
It provides SLCK, MAINCK and PLLCK.
Figure 9-2.
Clock Generator Block Diagram
9.4
Power Management Controller
The Power Management Controller uses the Clock Generator outputs to provide:
– the Processor Clock PCK
– the Master Clock MCK
– the USB Clock UDPCK
– all the peripheral clocks, independently controllable
– four programmable clock outputs
The Master Clock (MCK) is programmable from a few hundred Hz to the maximum operating fre-
quency of the device.
The Processor Clock (PCK) switches off when entering processor idle mode, thereby reducing
power consumption while waiting an interrupt.
Power
Management
Controller
XIN
XOUT
PLLRC
Slow Clock
SLCK
Main Clock
MAINCK
PLL Clock
PLLCK
Control
Status
Embedded
RC
Oscillator
Main
Oscillator
PLL and
Divider
Clock Generator
相关PDF资料
PDF描述
AT91SAM7S321-AU IC ARM7 MCU FLASH 32K 64LQFP
AT91SAM7S32B-MU IC MCU ARM7 32KB FLASH 48-VQFN
AT91SAM7SE256-AU IC ARM7 MCU FLASH 256K 128-LQFP
AT91SAM7SE32-AU MCU ARM 32K HS FLASH 128-LQFP
AT91SAM7X256B-CU IC MCU 256KB FLASH 100TFBGA
相关代理商/技术参数
参数描述
AT91SAM7A3-EK 功能描述:开发板和工具包 - ARM Eval Kit for AT91SAM7A3 apps RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V
AT91SAM7L128 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:AT91 ARM Thumb-based Microcontroller
AT91SAM7L128-AU 功能描述:ARM微控制器 - MCU 128KB Flash RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
AT91SAM7L128-CU 功能描述:ARM微控制器 - MCU 128KB Flash RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
AT91SAM7L128PRE 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:numberHigh-performance 32-bit RISC Architecture