Atmel AT91EB55 User Manual
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Atmel AT91EB55 User Manual

Atmel AT91EB55 User Manual

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AT91EB55 Evaluatuon Board
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User Guide

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Summary of Contents for Atmel AT91EB55

  • Page 1 AT91EB55 Evaluatuon Board ....................User Guide...

  • Page 3: Table Of Contents

    Table of Contents Section 1 Overview....................1-1 Scope ......................1-1 Deliverables ....................1-1 The AT91EB55 Evaluation Board .............1-1 Section 2 Setting Up the AT91EB55 Evaluation Board .................. 2-1 Electrostatic Warning ................2-1 Requirements....................2-1 Layout .......................2-1 Jumper Settings ..................2-2 Powering Up the Board ................2-2 Measuring Current Consumption on the AT91M55800A ......2-2...
  • Page 4 Ground Links (JP6) ...................5-4 Increasing Memory Size ................5-5 Section 6 Appendix B – Schematics..............6-1 Schematics ....................6-1 Section 7 Appendix C – Bill of Material ..............7-1 Section 8 Appendix D – Flash Memory ..............8-1 AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 5: Overview

    Section 1 Overview Scope The AT91EB55 Evaluation Board enables real-time code development and evaluation. It supports the AT91M55800A. This user guide focuses on the AT91 Evaluation Board as an evaluation and demonstra- tion platform: Section 1 provides an overview. Section 2 describes how to setup the evaluation board.
  • Page 6 2 x 32 pin EBI expansion connector 3 x 32 pin I/O expansion connector 20-pin JTAG interface connector If required, user-defined peripherals can also be added to the board. See “Appendix A” for details. AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 7 Overview Figure 1-1. AT91EB55 Block Diagram AT91M55800 SRAM Flash 8K byte Reset Controller Expansion ARM7TDMI Connector Processor JTAG-ICE Connector AMBA Clock 16 MHz Bridge Generator XTAL LEDs PROM Interrupt Push Controller Buttons Timer Watchdog Counters Timer Reset Serial Serial Controller...
  • Page 8 Overview AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 9: Setting Up The At91Eb55

    Setting Up the AT91EB55 Evaluation Board Electrostatic The AT91EB55 Evaluation Board is shipped in protective anti-static packaging. The board must not be subjected to high electrostatic potentials. A grounding strap or similar Warning protective device should be worn when handling the board. Avoid touching the compo- nent pins or any other metallic element.

  • Page 10: Jumper Settings

    Consumption on further details. AT91M55800A Testing the In order to test the AT91EB55 Evaluation board, the following procedure should be performed: AT91EB55 Evaluation Board 1. Hold down the SW1 button and power up the board or generate a reset and wait for the light sequence on each LED to complete.
  • Page 11 Setting Up the AT91EB55 Evaluation Board D3 for the external Flash D4 for the E PROM with I C access D5 for the SPI data flash D6 for the SPI E PROM D7 for the USART D8 for the ADC and DAC If a test is not carried out, the corresponding LED remains unlit and the test sequence restarts.
  • Page 12 Setting Up the AT91EB55 Evaluation Board AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 13: The On-Board Software

    Section 3 The On-board Software AT91EB55 The AT91EB55 Evaluation Board contains an AT49BV16X4 Flash device programmed with default software. Only the lowest eight 8-Kbyte sectors are used. The remaining Evaluation Board sectors are user-definable and can be programmed using one of the Flash downloader solutions offered in the AT91 library.

  • Page 14: Programmed Default Memory Mapping

    Downloader reset. The procedure is as follows: 1. Connect the AT91EB55 Evaluation Board to the host PC serial A connection using the straight serial cable provided. 2. Power on or press RESET, simultaneously holding down the SW2 button. Wait for D2 to light up and then release SW2.
  • Page 15 The On-board Software The Angel on the AT91EB55 can be upgraded regardless of the version programmed on Note: If the debugger is started through ICE while the Angel monitor is on, the Advanced Interrupt Controller (AIC) and the USART channel are enabled.
  • Page 16 The On-board Software AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 17: Circuit Description

    Ground are also available on this connector. Configuration strap CB1, when open, allows the user to connect the EBI expansion connector to the MPI expansion connector of an AT91EB63 evaluation board without fearing any conflict problem. AT91EB55 Evaluatuon Board User Guide Rev. 1709B–ATARM–07/02...

  • Page 18: Memories

    Select Decode feature of the AT91 SPI peripheral (PCSDEC bit of the SPI Mode Register). Note: The AT91EB55 is fitted with two 128K x 8 SRAM devices and one AT45DB321 serial DataFlash device (U21). The AT91EB55 may be fitted with a Flash using either an AT49BV1604 (CB18 should be closed) or an AT49BV1614 (CB18 should be open).

  • Page 19: Push Buttons, Leds, Reset And Serial Interface

    Serial Port B (P4) is a DB9 male connector with TXD and RXD obeying the standard RS-232 pin-out. Apart from TXD, RXD and Ground, the other pins are not connected. A MAX3223 device U10 and associated bulk storage capacitors provide RS-232 level conversion. AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 20: Layout Drawing

    See Figure 1 in “Appendix B – Schematics.” The board is provided with four mounting holes, one at each corner, into which feet are attached. The board has two signal layers and two power planes. AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 21: Appendix A - Configuration Straps

    ADC1 trigger input (AD1TRIG) is controlled by the PA7 PIO line. Open ADC1 trigger input (AD1TRIG) is not connected to the PA7 PIO line. This authorizes users to connect the corresponding lines to their own resources via the I/O expansion connector. AT91EB55 Evaluatuon Board User Guide Rev. 1709B–ATARM–07/02...
  • Page 22 The BMS MCU input pin is set for the microcontroller to boot on an external 16-bit memory at reset. Closed The BMS MCU input pin is set for the microcontroller to boot on an external 8-bit memory at reset. AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 23 The first half of the Flash memory is accessible at its base address. 1 – 2 The second half of the Flash memory is accessible at its base address. This authorizes users to download their own application software in this part and to boot on it. AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 24: Power Consumption Measurement Straps (Jp5, Jp9)

    The JP9 strap enables the user to connect an ammeter to measure the AT91M55800A APMC and RTC modules battery backup consumption (V DDBU Ground Links The JP6 strap allows the user to connect the electrical and mechanical ground. (JP6) AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 25: Increasing Memory Size

    Appendix A – Configuration Straps Increasing The AT91EB55 evaluation board is supplied with two 128K bytes x 8 SRAM memories. If, however, the user needs more than 256K bytes of memory, the devices can be Memory Size replaced with two 512K x 8, 3.3V, 10/15 ns SRAMs, giving in total 1024K bytes.
  • Page 26 Appendix A – Configuration Straps AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 27: Appendix B - Schematics

    Appendix B – Schematics Schematics The following schematics are appended: Figure 6-1 PCB Layout Figure 6-2 AT91EB55 Blocks Synopsis Figure 6-3 EBI Memories Figure 6-4 I/O and EBI Expansion Connectors Figure 6-5 Push Buttons, LEDs and Serial Interface Figure 6-6 AT91M55800A...
  • Page 28 Appendix B – Schematics Figure 6-1. PCB Layout 128K x 8 512K x 8 AT91M55800A 128K x 8 33 AI 512K x 8 AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 29 EBI_[0..49] EBI_[0..49] EBI_41 EBI_[0..49] EBI_41 IOB_[0..71] IOB_[0..71] EBI MEMORIES SERIAL MEMORIES IOB_54 IOB_[68..71] IOB_54 IOB_[68..71] NPCS[0..3] NPCS[0..3] MOSI MOSI MISO MISO SPCK SPCK memories connected on EBI SERIAL MEMORIES MOSI MISO SPCK MICRCONTROLLOR INPUT / OUTPUT ON BOARD MICROCONTROLLER NPCS[0..3] NPCS[0..3] IOB_[0..71] IOB_[0..71]...
  • Page 30 Appendix B – Schematics Figure 6-3. EBI Memories AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 31 Appendix B – Schematics Figure 6-4. I/O and EBI Expansion Connectors AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 32 Appendix B – Schematics Figure 6-5. Push Buttons, LEDs and Serial Interface AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 33 J T A G 1 PB19 J T A G 4 J T A G 3 J T A G 0 CTL5 CTL3 CTL2 CTL0 CTL1 VDDIO V D D C O R E AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 34 Appendix B – Schematics Figure 6-7. Reset and JTAG Interface AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 35 Appendix B – Schematics Figure 6-8. Power Supply AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 36 Appendix B – Schematics Figure 6-9. SPI and I C Memories 6-10 AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 37: Appendix C - Bill Of Material

    C43, C47, C48 10 pF Ceramic NPO/10V/5% Adjustable Capacitor, serial 4 - 25 pF TZBX4 68 pF/10% Ceramic X7R/10V/10% 680 pF/10% Ceramic X7R/10V/10% C55, C59 22 pF/25V Ceramic X7R/25V 10 µF/25V 25V ESR < 0.5Ω/0.5Arms AT91EB55 Evaluatuon Board User Guide Rev. 1709B–ATARM–07/02...
  • Page 38 R6, R7, R8, R9, R10, R11, R12, R13, 100R Resistor 5% R23, R24 270K Resistor 5% 287R 1% E48 Resistor 1% RR1, RR2, RR3, Resistance network (4 100K resistors with 1 common point) Shunt OR AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 39 1. If the AT49BV1614 is replaced with the AT49BV1604, the jumper must be connected. 2. The EB55 is equipped with SRAM U2/U3 or U4/U5 (the difference lies in case type only). The choice is made according to availability. AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 40 Appendix C – Bill of Material AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...

  • Page 41: Appendix D - Flash Memory

    User Mode Led Swing Application (example) 0x01100000 Not Used 15 Sectors (64K Byte/sector) Standard Mode 0x01010000 6 Sectors Angel Software (8K Byte/sector) 0x01004000 Functional Test Software, 2 Sectors SRAM Downloader, Boot (8K Byte/sector) 0x01000000 AT91EB55 Evaluatuon Board User Guide Rev. 1709B–ATARM–07/02...
  • Page 42 Appendix D – Flash Memory AT91EB55 Evaluatuon Board User Guide 1709B–ATARM–07/02...
  • Page 43 No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems.

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