AT91SAM7X256-AU中文資料愛特梅爾數(shù)據(jù)手冊PDF規(guī)格書

Features

? Incorporates the ARM7TDMI ARM Thumb? Processor

? 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

? 512 Kbytes (SAM7X512) Organized in Two Banks of 1024 Pages of

256 Bytes (Dual Plane)

? 256 Kbytes (SAM7X256) Organized in 1024 Pages of 256 Bytes (Single Plane)

? 128 Kbytes (SAM7X128) Organized in 512 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

? 128 Kbytes (SAM7X512)

? 64 Kbytes (SAM7X256)

? 32 Kbytes (SAM7X128)

? Memory Controller (MC)

? Embedded Flash Controller, Abort Status and Misalignment Detection

? Reset Controller (RSTC)

? Based on Power-on Reset Cells and Low-power Factory-calibrated Brownout 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)

? Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and Idle Mode

? Four Programmable External Clock Signals

? Advanced Interrupt Controller (AIC)

? Individually Maskable, Eight-level Priority, Vectored Interrupt Sources

? Two External Interrupt Sources 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

? Two Parallel Input/Output Controllers (PIO)

? Sixty-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

? Thirteen Peripheral DMA Controller (PDC) Channels

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

? On-chip Transceiver, 1352-byte Configurable Integrated FIFOs

? One Ethernet MAC 10/100 base-T

? Media Independent Interface (MII) or Reduced Media Independent Interface (RMII)

? Integrated 28-byte FIFOs and Dedicated DMA Channels for Transmit and Receive

? One Part 2.0A and Part 2.0B Compliant CAN Controller

? Eight Fully-programmable Message Object Mailboxes, 16-bit Time Stamp Counter

? One Synchronous Serial Controller (SSC)

? Independent Clock and Frame Sync Signals for Each Receiver and Transmitter

? I2S 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

? Two Master/Slave Serial Peripheral Interfaces (SPI)

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

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

? Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel

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

? One Four-channel 16-bit Power Width Modulation Controller (PWMC)

? One Two-wire Interface (TWI)

? Master Mode Support Only, All Two-wire Atmel EEPROMs and I2C Compatible Devices Supported

? One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os

? SAM-BA? Boot Assistance

? 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 VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply

? 1.8V VDDCORE Core Power Supply with Brownout Detector

? Fully Static Operation: Up to 55 MHz at 1.65V and 85°C Worst Case Conditions

? Available in 100-lead LQFP Green and 100-ball TFBGA Green Packages