SAM7-P256,SAM7-P256 pdf中文资料,SAM7-P256引脚图,SAM7-P256电路-Datasheet-电子工程世界

SAM7-P256: 产品描述SAM7-P256 development board Users Manual; 文件大小2MB，共21页; 制造商ETC2

下载文档全文预览

SAM7-P256在线购买

供应商	器件名称	价格	最低购买	库存
	SAM7-P256	-	-	点击查看	点击购买

SAM7-P256概述

SAM7-P256 development board Users Manual

文档预览

下载PDF文档

全文
预览

SAM7-P256 development board

Users Manual

All boards produced by Olimex are ROHS compliant

Rev. F, August 2008

Page 1

INTRODUCTION:

Atmel’s

AT91SAM7S256

is a member of a series of low pincount Flash mi-

crocontrollers based on the 32-bit ARM RISC processor. It features a 256 Kbyte

high-speed Flash and a 64 Kbyte SRAM, a large set of peripherals, including a USB

2.0 device, and a complete set of system functions minimizing the number of ex-

ternal components. The device is an ideal migration path for 8-bit microcontroller

users looking for additional performance and extended memory.

The embedded Flash memory can be programmed in-system via the JTAG-

ICE interface or via a parallel interface on a production programmer prior to

mounting. Built-in lock bits and a security bit protect the firmware from accidental

overwrite and preserves its confidentiality.

The AT91SAM7S256 system controller includes a reset controller capable

of managing the power-on sequence of the microcontroller and the complete sys-

tem. Correct device operation can be monitored by a built-in brownout detector

and a watchdog running off an integrated RC oscillator.

The AT91SAM7S256 is a general-purpose microcontroller. Its integrated

USB Device port makes it an ideal device for peripheral applications requiring con-

nectivity to a PC or cellular phone. Its aggressive price point and high level of in-

tegration pushes its scope of use far into the cost-sensitive, high-volume consumer

market.

BOARD FEATURES:

•

Microcontroller:

AT91SAM7S256

16/32 bit ARM7TDMI™ with 256K

Bytes Program Flash, 64K Bytes RAM, USB 2.0, RTT, 10 bit ADC 384

ksps, 2x UARTs, TWI (I2C), SPI, 3x 32bit TIMERS, 4x PWM, SSC, WDT,

PDC (DMA) for all peripherals, up to 60MHz operation

standard JTAG connector with ARM 2x10 pin layout for program-

ming/debugging with ARM-JTAG

USB connector

Two channel RS232 interface and drivers

SD/MMC card connector

two buttons

trimpot connected to ADC

thermistor connected to ADC

two status LEDs

on board voltage regulator 3.3V with up to 800mA current

single power supply: 6V AC or DC required

power supply LED

power supply filtering capacitor

RESET circuit

RESET button

•

Page 2

•

18.432 Mhz crystal on socket

extension headers for all microcontroller's ports

PCB: FR-4, 1.5 mm (0,062"), soldermask, silkscreen component print

Dimensions: 120 x 80 mm (4.7 x 3.15")

ELECTROSTATIC WARNING:

The

SAM7-P256

board is shipped in protective anti-static packaging. The board

must not be subject to high electrostatic potentials. General practice for working

with static sensitive devices should be applied when working with this board.

BOARD USE REQUIREMENTS:

Cables:

The cable you will need depends on the programmer/debugger you use. If

you use

ARM-JTAG-EW,

you will need USB A-B cable.

Hardware:

Programmer/Debugger

ARM-JTAG-EW

or other compatible

programming/debugging tool if you work with EW-ARM.

You can use also

ARM-USB-OCD, ARM-USB-TINY, ARM-USB-TINY-H

PROCESSOR FEATURES:

SAM7-P256

board use AT91 ARM Thumb-based microcontroller

AT91SAM7S256

from Atmel Corporation with these features:

−

High-performance 32-bit RISC Architecture

High-density 16-bit Instruction Set

Leader in MIPS/Watt

EmbeddedICE™ In-circuit Emulation, Debug Communication Channel

Support

Internal High-speed Flash

−

256 Kbytes Organized in 1024 Pages of 256 Bytes (Single Plane)

Single Cycle Access at Up to 30 MHz in Worst Case Conditions

Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum

Speed

Page Programming Time: 6 ms, Including Page Auto-erase, Full Erase

Time: 15 ms

10,000 Write Cycles, 10-year Data Retention Capability, Sector Lock

Capabilities, Flash Security Bit

Fast Flash Programming Interface for High Volume Production

Internal High-speed SRAM, Single-cycle Access at Maximum Speed

Page 3

−

64 Kbytes

Memory Controller (MC)

Embedded Flash Controller, Abort Status and Misalignment Detection

Reset Controller (RSTC)

Based on Power-on Reset and Low-power Factory-calibrated Brown-out

Detector

Provides External Reset Signal Shaping and Reset Source Status

−

Clock Generator (CKGR)

Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one

PLL

−

Power Management Controller (PMC)

−

Software Power Optimization Capabilities, Including Slow Clock

Mode (Down to 500 Hz) and Idle Mode

Three Programmable External Clock Signals

−

Advanced Interrupt Controller (AIC)

−

Individually Maskable, Eight-level Priority, Vectored Interrupt Sources

Two External Interrupt Source(s) and One Fast Interrupt Source,

Spurious Interrupt Protected

−

Debug Unit (DBGU)

−

2-wire UART and Support for Debug Communication Channel

interrupt, Programmable ICE Access Prevention

Mode for General Purpose 2-wire UART Serial Communication

−

Periodic Interval Timer (PIT)

−

20-bit Programmable Counter plus 12-bit Interval Counter

Windowed Watchdog (WDT)

12-bit key-protected Programmable Counter

Provides Reset or Interrupt Signals to the System

Counter May Be Stopped While the Processor is in Debug State or in

Idle Mode

−

Real-time Timer (RTT)

−

32-bit Free-running Counter with Alarm

Runs Off the Internal RC Oscillator

−

One Parallel Input/Output Controller (PIOA)

−

Thirty-two Programmable I/O Lines Multiplexed with up to Two

Peripheral I/Os

Input Change Interrupt Capability on Each I/O Line

Individually Programmable Open-drain, Pull-up resistor and

Synchronous Output

Page 4

−

Eleven Peripheral DMA Controller (PDC) Channels

One USB 2.0 Full Speed (12 Mbits per Second) Device Port

−

On-chip Transceiver, 328-byte Configurable Integrated FIFOs

One Synchronous Serial Controller (SSC)

Independent Clock and Frame Sync Signals for Each Receiver and

Transmitter

S Analog Interface Support, Time Division Multiplex Support

High-speed Continuous Data Stream Capabilities with 32-bit Data

Transfer

−

Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)

−

Individual Baud Rate Generator, IrDA® Infrared

Modulation/Demodulation

Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking,

RS485 Support

Full Modem Line Support on USART1

−

One Master/Slave Serial Peripheral Interface (SPI)

−

8- to 16-bit Programmable Data Length, Four External Peripheral Chip

Selects

−

One Three-channel 16-bit Timer/Counter (TC)

−

Three External Clock Input and Two Multi-purpose I/O Pins per

Channel

Double PWM Generation, Capture/Waveform Mode, Up/Down

Capability

−

One Four-channel 16-bit PWM Controller (PWMC)

One Two-wire Interface (TWI)

−

Master Mode Support Only, All Two-wire Atmel EEPROMs and I

Compatible Devices Supported

−

One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed

with Digital I/Os

SAM-BA™ Boot Assistant

−

Default Boot program

Interface with SAM-BA Graphic User Interface

−

IEEE

1149.1 JTAG Boundary Scan on All Digital Pins

5V-tolerant I/Os, including Four High-current Drive I/O lines, Up to 16 mA

Each

Power Supplies

−

Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and

External Components

3.3V or 1.8V VDDIO I/O Lines Power Supply, Independent 3.3V

VDDFLASH Flash Power Supply

Page 5

推荐资源

器件捷径: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

热门器件

XC6123C423ML
SPSW301K0G
46W-RLP12-CR9
AE105E25B24S
76010T-23B-55SC
62-30329-5C-0300
87038-818LF
ABL-FREQ-S-R40-A-7-Y-F-QXX-P
BZM5261D_R1_10001
P4KE68
A2008WVA-6P-BL
A2541WR-30P-E991-T

开源项目推荐更多

LTC1733 的典型应用 - 具有热调节功能的单片式线性锂离子电池充电器
ADR420 超精密、低噪声、5.00 Vout XFET 电压基准的典型应用，用于输出微调调整
LTC3607IMSE 双路 600mA 单片式同步降压型 DC/DC 稳压器的典型应用电路
LT6654BHS6-1.25 八路 DAC 电压基准的典型应用
STEVAL-TDR016V1，基于PD55015E射频功率放大器的演示板
使用 ROHM Semiconductor 的 BD9A301MUV-LBE2 的参考设计
使用 Infineon Technologies AG 的 TDA 16847-2 的参考设计
LT3091MPT7 无镇流器并联器件的典型应用（50mA 最小负载）
TCR5SB47A、150mA、4.7V 输出电压 CMOS 低压降稳压器的典型应用
TS1083 7.5A 低压降正稳压器的固定输出电压典型应用

热门活动更多

填问卷赢好礼 | 想学电源设计？来MPS小课堂！
【大家咋用AI的】版块上线啦~欢迎来聊聊你的AI开发经验，有好礼
【回帖赢50元京东卡】模拟电子与储能解决方案大讨论（4月新活动）
与Digikey得捷一起解锁【ADI 超紧凑型超低功耗边缘AI开发板MAX78000FTHR】超能力，Follow me第四季第1期报名中！
DigiKey得捷应用探索站 | 模拟电子与储能解决方案
【有奖直播】TI 工业自动化与机器人功能安全解决方案线上研讨会
是德科技重磅新品发布会｜新一代无线测试利器VXT：开启 RF 与模拟 IQ 全链路测试
你晒单我买单2026第1期报名中，DigiKey得捷带您畅享好物！
装备焕新月：e络盟Multicomp Pro系列产品，小投入，大升级 ―― 装备焕新惊喜体验
MPS 机器人模块设计大赛报名重磅开启，锻造硬实力，让想法照进现实！

热门文章更多

LPC1788--TIMER匹配中断设置--寄存器操作
Credo 有源电缆产品家族再添新成员：第二代HiWire™ SPAN AEC
丰田车载摄像头自动记录违章变身移动交警
荣耀50/Pro全新配色“荣耀密码”官宣，将在周一亮相
苹果转攻RISC-V损失订单？Arm：生态圈有望增10倍
腾讯拟收购小米旗下黑鲨手机
新纳米颗粒可在肺部进行基因编辑，有助开发囊性纤维化肺病新疗法
Gartner：2023年第一季度全球PC出货量下降30%
51单片机学习：LED流水灯实验
德州仪器推出碳化硅栅极驱动器，可更大限度延长电动汽车行驶里程

技术资料推荐更多