AT91SAM7X256B-CU中文资料爱特梅尔数据手册PDF规格书

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