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AT91SAM7X_开发板原理图_schematics AT91SAM7X-EK Evaluation Board for AT91SAM7X and AT91SAM7XC .............................................................................................. User Guide 2 AT91SAM7X-EK Evaluation Board User Guide 6195E–ATARM–22-Mar-07 Table of Contents Sec...

AT91SAM7X_开发板原理图_schematics
AT91SAM7X-EK Evaluation Board for AT91SAM7X and AT91SAM7XC .............................................................................................. User Guide 2 AT91SAM7X-EK Evaluation Board User Guide 6195E–ATARM–22-Mar-07 Table of Contents Section 1 Overview............................................................................................... 1-1 1.1 Scope........................................................................................................1-1 1.2 Deliverables ..............................................................................................1-1 1.3 The AT91SAM7X-EK Evaluation Board....................................................1-1 Section 2 Setting Up the AT91SAM7X-EK Evaluation Board .................................................................................. 2-1 2.1 Electrostatic Warning ................................................................................2-1 2.2 Requirements............................................................................................2-1 2.3 Layout .......................................................................................................2-2 2.4 Powering Up the Board.............................................................................2-3 2.5 Getting Started..........................................................................................2-3 2.6 AT91SAM7X-EK Block Diagram...............................................................2-4 Section 3 Board Description ................................................................................. 3-1 3.1 AT91SAM7X Microcontroller.....................................................................3-1 3.2 AT91SAM7X Block Diagram.....................................................................3-4 3.3 AT91SAM7XC Microcontroller ..................................................................3-5 3.4 AT91SAM7XC Export Regulations Statement..........................................3-7 3.5 AT91SAM7XC Block Diagram ..................................................................3-8 3.6 Memory .....................................................................................................3-9 3.7 Clock Circuitry...........................................................................................3-9 3.8 Reset Circuitry ..........................................................................................3-9 3.9 Power Supply Circuitry..............................................................................3-9 3.10 Remote Communication ...........................................................................3-9 3.11 Analog Interface........................................................................................3-9 3.12 User Interface ...........................................................................................3-9 3.13 Debug Interface ......................................................................................3-10 3.14 Expansion Slot ........................................................................................3-10 Section 4 Configuration Straps ............................................................................. 4-1 4.1 Configuration Straps .................................................................................4-1 Section 5 Schematics ........................................................................................... 5-1 5.1 Schematics ...............................................................................................5-1 AT91SAM7X-EK Evaluation Board User Guide i 6195E–ATARM–22-Mar-076195E–ATARM–22-Mar-07 Section 6 Errata .................................................................................................... 6-1 6.1 Errata ........................................................................................................6-1 Section 7 Revision History.................................................................................... 7-1 7.1 Revision History ........................................................................................7-1 ii AT91SAM7X-EK Evaluation Board User Guide 6195E–ATARM–22-Mar-07 Section 1 Overview 1.1 Scope The AT91SAM7X-EK and the AT91SAM7XC-EK evaluation kits enable evaluation capa- bilities and code development of applications running on the AT91SAM7X or the AT91SAM7XC microcontroller. This guide focuses on the AT91SAM7X-EK board as a common evaluation platform for the AT91SAM7X and AT91SAM7XC devices in a 100-lead LQFP package. 1.2 Deliverables The package contains the following items: ! a board marked AT91SAM7X-EK ! one A/B-type USB cable ! one crossed serial RS232 cable ! one RJ45 crossed Ethernet cable ! universal input AC/DC power supply with US and EU plug adapter ! one DVD-ROM containing summary and full datasheets, datasheets with electrical and mechanical characteristics, application notes and getting started documents for all development boards and AT91 microcontrollers. An AT91 software package with C and assembly listings is also provided. This allows the user to begin evaluating the AT91 ARM® Thumb® 32-bit microcontroller quickly. 1.3 The AT91SAM7X- EK Evaluation Board Depending on the model of the kit, the board is equipped with either an AT91SAM7X256 or an AT91SAM7XC256 (100-pin LQFP Green package) together with the following interfaces: ! USB device port ! DBGU serial communication port ! RS232 serial communication port with RTS/CTS ! JTAG/ICE debug interface connector AT91SAM7X-EK Evaluation Board User Guide 1-1 6195E–ATARM–22-Mar-07 ! serial CAN communication ports ! MII Ethernet 100-base TX with auto MDIX capability ! buffered analog input and PWM output Overview ! Power LED and general-purpose LEDs 1-2 AT91SAM7X-EK Evaluation Board User Guide ! DataFlash® card slot ! expansion connector ! Atmel® serial DataFlash ! One footprint for Atmel Serial EEPROM (MN11) 6195E–ATARM–22-Mar-07 Section 2 Setting Up the AT91SAM7X-EK Evaluation Board 2.1 Electrostatic Warning The AT91SAM7X-EK evaluation board is shipped in a protective anti-static package. The board must not be subjected to high electrostatic potentials. A grounding strap or similar protective device should be worn when handling the board. Avoid touching the component pins or any other metallic element. 2.2 Requirements In order to set up the AT91SAM7X-EK evaluation board, the following items are required: ! the AT91SAM7X-EK evaluation board itself ! an A/B-type USB cable or ! a DC USB power adapter (5V at 0.5 A) with USB A/B cable Note: The kit is not delivered with a JTAG/ICE interface which is required to start eval- uating the device. AT91SAM7X-EK Evaluation Board User Guide 2-1 6195E–ATARM–22-Mar-07 Setting Up the AT91SAM7X-EK Evaluation Board 2.3 Layout 2-2 AT91SAM7X-EK Evaluation Board User Guide Figure 2-1. Layout - Top View 6195E–ATARM–22-Mar-07 Setting Up the AT91SAM7X-EK Evaluation Board Figure 2-2. Layout - Bottom View AT91SAM7X-EK Evaluation Board User Guide 2-3 2.4 Powering Up the Board The AT91SAM7X-EK board is self-powered by the USB port or by a USB power adapter. 2.5 Getting Started The AT91SAM7X-EK evaluation board is delivered with a DVD-ROM containing all nec- essary information and step-by-step procedures for working with the most common development tool chains. Please refer to this DVD-ROM, or to the AT91 web site, http://www.atmel.com/products/AT91/, for the most up-to-date information on getting started with the evaluation kit. 6195E–ATARM–22-Mar-07 Setting Up the AT91SAM7X-EK Evaluation Board 2.6 AT91SAM7X-EK 2-4 AT91SAM7X-EK Evaluation Board User Guide Block Diagram Figure 2-3. Block Diagram 3V3 VBUS 3V3 VBUS 3V3 NRST VD D IN VDDOUT VDDCORE VDDPLL SYSTEM CONTROLLER CAN US AR T0 R XD TX D CT S R TS RS232 R XDTX D RS232 DBGU US B USB DEVICE D D P D D M PI O ETHERNET PHY ETHERNET 10/100 EM AC M II IN TE R FA CE TW I SC L - S DA JTAG/ICE CONNECTOR MANUAL RESET N R ST VD D AN A GNDANA AD 4 3.3VANA 3.00V +- 0.2% AD 5 USER'S GREEN LED PW M 0 PW M 2 G ND AN A EXTERNAL REF PW M 3 ADC PW M 1 AD VR EF P JTAG/ICE 0 TO V RE F EX TE R N AL IN PU T 0 TO V RE F PW M V O LT AG E G EN . EXT CLK INPUT 18.432 M H z XIN XOUT POWER LED AT91SAM7X256 1 ANALOG INPUT D BG U D R XD - D TX D CA NL 1 CA NH RJ45 VD D FL AS H ER AS E PWD SP I0 RS PW M 3 PI O R XD - TX D - R TS - CT S PI O 3V3IN OUT LIGHTED WHEN POWER ON PIO 5V USER'S TACT SWITCH PIO A VD D IO TS T Serial EEprom MDI/MDIX AUTO CROSSOVER RF CONNECTORS ZIGBEE AT86RF210 MODULE RF CONNECTORS AT86RF230 MODULE RF CONNECTORS ATR2406 MODULE PIO B DATAFLASH CARD READER CS SERIAL DATAFLASH SP I0 _N PC S0 SP I0 _N PC S1 NOT POPULATED PI O A - PI O B E XP AN SI O N CO NN EC TO R NOT POPULATED PIO APWM0..PWM3PIO B PB 19 PB 20 PB 21 PB 22 PB 30 AT91SAM7XC256 (LQFP100) 8 57 6 4 3 2 1 9 1 52 4 3 6 1K 5 1K 5 J7J7 1 2 3 YELLOWYELLOW 6195E–ATARM–22-Mar-07 Section 3 Board Description 3.1 AT91SAM7X Microcontroller ! Incorporates the ARM7TDMI® ARM® Thumb® Processor – High-performance 32-bit RISC Architecture – High-density 16-bit Instruction Set – Leader in MIPS/Watt – EmbeddedICE™, Debug Communication Channel Support ! Internal High-speed Flash – 256 Kbytes (AT91SAM7X256) Organized in 1024 Pages of 256 Bytes – 128 Kbytes (AT91SAM7X128) Organized in 512 Pages of 256 Bytes – 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 – 64 Kbytes (AT91SAM7X256) – 32 Kbytes (AT91SAM7X128) ! 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 AT91SAM7X-EK Evaluation Board User Guide 3-1 6195E–ATARM–22-Mar-07 ! Power Management Controller (PMC) Board Description – Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) 3-2 AT91SAM7X-EK Evaluation Board User Guide 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 ! 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 6195E–ATARM–22-Mar-07 Board Description ! Two Universal Synchronous/Asynchronous Receiver Transmitters (USART) AT91SAM7X-EK Evaluation Board User Guide 3-3 – 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 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 a 100-lead LQFP Green Package 6195E–ATARM–22-Mar-07 Board Description 3.2 AT91SAM7X Figure 3-1. Block Diagram 3-4 AT91SAM7X-EK Evaluation Board User Guide Block Diagram TDI TDO TMS TCK NRST FIQ IRQ0-IRQ1 PCK0-PCK3 PMC Peripheral Bridge Peripheral DMA Controller AIC PLL RCOSC SRAM 64/32 Kbytes ARM7TDMI Processor ICEJTAG SCAN JTAGSEL PIOA USART0 SSC Timer Counter RXD0 TXD0 SCK0 RTS0 CTS0 SPI0_NPCS0 SPI0_NPCS1 SPI0_NPCS2 SPI0_NPCS3 SPI0_MISO SPI0_MOSI SPI0_SPCK Flash 256/128 Kbytes Reset Controller DRXD DTXD TF TK TD RD RK RF TCLK0 TCLK1 TCLK2 TIOA0 TIOB0 TIOA1 TIOB1 TIOA2 TIOB2 Memory Controller Abort Status Address Decoder Misalignment Detection PI O PI O APB POR Embedded Flash Controller AD0 AD1 AD2 AD3 ADTRG PLLRC 13 Channels PDC PDC USART1 RXD1 TXD1 SCK1 RTS1 CTS1 DCD1 DSR1 DTR1 RI1 PDC PDC PDC PDC SPI0 PDC ADC ADVREF PDC PDC TC0 TC1 TC2 TWD TWCKTWI OSCXINXOUT VDDIN PWMC PWM0 PWM1 PWM2 PWM3 1.8 V Voltage Regulator USB Device FIFO DDM DDP Tr a n sc e ive r GND VDDOUT BOD VDDCORE VDDCORE VDDFLASH AD4 AD5 AD6 AD7 VDDFLASH Fast Flash Programming Interface ERASE PI O PGMD0-PGMD15 PGMNCMD PGMEN0-PGMEN1 PGMRDY PGMNVALID PGMNOE PGMCK PGMM0-PGMM3 VDDIO TST DBGU PDC PDC PIT WDT RTT System Controller VDDCORE CAN CANRX CANTX PI O Ethernet MAC 10/100 ETXCK-ERXCK-EREFCK ETXEN-ETXER ECRS-ECOL, ECRSDV ERXER-ERXDV ERX0-ERX3 ETX0-ETX3 EMDC EMDIO DMA FIFOPIOB SPI1_NPCS0 SPI1_NPCS1 SPI1_NPCS2 SPI1_NPCS3 SPI1_MISO SPI1_MOSI SPI1_SPCK PDC PDC SPI1 EF100 SAM-BA ROM VDDFLASH 6195E–ATARM–22-Mar-07 Board Description 3.3 AT91SAM7XC ! Incorporates the ARM7TDMI® ARM® Thumb® Processor AT91SAM7X-EK Evaluation Board User Guide 3-5 Microcontroller – High-performance 32-bit RISC Architecture – High-density 16-bit Instruction Set – Leader in MIPS/Watt – EmbeddedICE™, Debug Communication Channel Support ! Internal High-speed Flash – 256 Kbytes (AT91SAM7XC256) Organized in 1024 Pages of 256 Bytes – 128 Kbytes (AT91SAM7XC128) Organized in 512 Pages of 256 Bytes – 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 – 64 Kbytes (AT91SAM7XC256) – 32 Kbytes (AT91SAM7XC128) ! 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 ! Periodic Interval Timer (PIT) – 20-bit Programmable Counter plus 12-bit Interval Counter ! Windowed Watchdog (WDT) 6195E–ATARM–22-Mar-07 Board Description – 12-bit key-protected Programmable Counter 3-6 AT91SAM7X-EK Evaluation Board User Guide – 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 ! Seventeen Peripheral DMA Controller (PDC) Channels ! One Advanced Encryption System (AES) – 128-bit Key Algorithm, Compliant with FIPS PUB 197 Specifications – Buffer Encryption/Decryption Capabilities with PDC ! One Triple Data Encryption System (TDES) – Two-key or Three-key Algorithms, Compliant with FIPS PUB 46-3 Specifications – Optimized for Triple Data Encryption Capability ! 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) 6195E–ATARM–22-Mar-07 Board Description – 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects AT91SAM7X-EK Evaluation Board User Guide 3-7 ! 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 Capabilit
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