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Summary of Contents for Atmel AT91EB42
- Page 1 查询AT91EB42供应商 捷多邦，专业PCB打样工厂，24小时加急出货 AT91EB42 Evaluation Board ................User Guide...
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Page 3: Table Of Contents
Requirements....................2-1 Layout .......................2-1 Jumper Settings ..................2-2 Powering Up the Board................2-2 Measuring Current Consumption on the AT91M42800 ......2-2 Testing the AT91EB42 Evaluation Board ..........2-2 Section 3 The On-board Software ................ 3-1 AT91EB42 Evaluation Board ..............3-1 Boot Software Program................3-1 Programmed Default Memory Mapping ............3-2 SRAM Downloader ...................3-2... - Page 4 Table of Contents Section 5 Appendix A – Configuration Straps............5-1 Configuration Straps (CB1 - 23, JP1 - 8) ..........5-1 Power Consumption Measurement Strap (JP5) ........5-4 Ground Links (JP6) ...................5-4 Increasing Memory Size ................5-4 Section 6 Appendix B – Schematics..............6-1 Schematics ....................6-1...
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Page 5: Overview
The evaluation board is capable of supporting different kinds of debugging systems, using an ICE interface or the on-board Angel Debug Monitor. Refer to the AT91EB42 Getting Started Tutorial documents for recommendations on using the evaluation board in a full debug environment. - Page 6 2 x 32-pin EBI expansion connectors 2 x 32-pin I/O expansion connectors 20-pin JTAG interface connector If required, user-defined peripherals can also be added to the board. See Section 5 for details. Figure 1-1. AT91EB42 Evaluation Board Block Diagram AT91M42800 Reset Controller 8K Byte...
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Page 7: Setting Up The At91Eb42 Evaluation Board
Setting Up the AT91EB42 Evaluation Board Electrostatic The AT91EB42 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 8: Jumper Settings
Consumption on See Section 5 for further details. the AT91M42800 Testing the To test the AT91EB42 Evaluation Board, perform the following steps: AT91EB42 1. Hold down the SW1 button and power-up the board, or generate a reset and wait Evaluation Board for the light sequence on each LED to complete. -
Page 9: The On-Board Software
Section 3 The On-board Software AT91EB42 The AT91EB42 Evaluation Board embeds an AT49BV1604 Flash memory device pro- grammed with default software. Only the lowest 8 x 8 KB sectors are used. The Evaluation Board remaining sectors are user definable, and can be programmed using one of the Flash downloader solutions offered in the AT91 library. -
Page 10: Programmed Default Memory Mapping
When Angel starts, it recopies itself in SRAM in order to run faster. The SRAM used by Angel is from 0x02020000 to 0x02040000, i.e., the highest half part of the SRAM. The Angel on the AT91EB42 Evaluation Board can be upgraded regardless of the ver- sion programmed on it. -
Page 11: Circuit Description
-standard 20-pin box header (P5) is provided to enable connection of an ICE interface to the JTAG inputs on the AT91. This allows code to be developed on the board without using system resources such as memory and serial ports. AT91EB42 Evaluation Board User Guide... -
Page 12: Memories
SRAM devices. Note: The AT91EB42 is fitted with two 128K x 8 SRAM devices. A footprint is provided for the user to fit a multi-chip device memory that embeds Flash (1 MB) and SRAM (128 KB) in a single component in place of the Flash and SRAM devices (U7: M36W108AB from ST). -
Page 13: Layout Drawing
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. AT91EB42 Evaluation Board User Guide... - Page 14 Circuit Description AT91EB42 Evaluation Board User Guide...
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Page 15: Appendix A – Configuration Straps
(5.5V to 6.2V). Open Battery power supply is not connected to the ADC (U20) channel 1. This authorizes users to connect the corresponding ADC channel to their own resources via the I/O expansion connector. AT91EB42 Evaluation Board User Guide... - Page 16 BMS AT91 input pin is set for the microcontroller to boot on an external 8-bit memory at reset. CB13, CB14 C EEPROM Enabling Closed EEPROM communication enabled Open EEPROM communication disabled. This authorizes users to connect the corresponding PIO to their own resources via the I/O expansion connector. AT91EB42 Evaluation Board User Guide...
- Page 17 CB21, CB22, CB23 Charger Device (U16): Programming the Battery Number of Cells Number of Cells CB21 CB22 CB23 Open Closed Closed Open Open Closed Closed Open Closed Open Closed Open Open Open Open Closed Open Open AT91EB42 Evaluation Board User Guide...
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Page 18: Power Consumption Measurement Strap (Jp5)
The JP6 strap allows the user to connect the electrical and mechanical grounds. (JP6) Increasing The AT91EB42 Evaluation Board is supplied with two 128K x 8 byte 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 19 Appendix B – Schematics Schematics The following schematics are appended: • Figure 6-1. PCB Layout • Figure 6-2. AT91EB42 Blocks Overview • Figure 6-3. EBI Memories • Figure 6-4. I/O and EBI Expansion Connectors • Figure 6-5. Push Buttons, LEDs and Serial Interface •...
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Page 20: Appendix B - Schematics
Appendix B – Schematics Figure 6-1. PCB Layout AT91EB42 Evaluation Board User Guide... -
Page 21: Figure 6-2. At91Eb42 Blocks Overview
Appendix B – Schematics Figure 6-2. AT91EB42 Blocks Overview AT91EB42 Evaluation Board User Guide... -
Page 22: Figure 6-3. Ebi Memories
Appendix B – Schematics Figure 6-3. EBI Memories AT91EB42 Evaluation Board User Guide... -
Page 23: Figure 6-4. I/O And Ebi Expansion Connectors
Appendix B – Schematics Figure 6-4. I/O and EBI Expansion Connectors AT91EB42 Evaluation Board User Guide... -
Page 24: Figure 6-5. Push Buttons, Leds And Serial Interface
Appendix B – Schematics Figure 6-5. Push Buttons, LEDs and Serial Interface AT91EB42 Evaluation Board User Guide... -
Page 25: Figure 6-6. At91M42800
CTL1 NUB / NWR1 CTL4 NCS0 CTL6 NCS1 PB0 / NCS2 PB1 / NCS3 G N D G N D V D D C O R E VDDIO V D D C O R E AT91EB42 Evaluation Board User Guide... -
Page 26: Figure 6-7. Reset And Jtag Interface
Appendix B – Schematics Figure 6-7. Reset and JTAG Interface AT91EB42 Evaluation Board User Guide... -
Page 27: Figure 6-8. Power Supply And Battery Charger
Appendix B – Schematics Figure 6-8. Power Supply and Battery Charger B O O S T G N D D R V G N D AT91EB42 Evaluation Board User Guide... -
Page 28: Figure 6-9. Battery Type And Connection
B T 1 con. fem. 6 V / 3 0 0 m A H 43025-0400+43030-0007 R 6 1 M O L E X T˚C Wire: gauge 20 AWG 10K CTN SIEMENS B57861S103F40 Tmax 45˚C 6-10 AT91EB42 Evaluation Board User Guide... -
Page 29: Figure 6-10. Spi Memories, I
Appendix B – Schematics Figure 6-10. SPI Memories, I C Memories and SPI ADC AT91EB42 Evaluation Board User Guide 6-11... - Page 30 No licenses to patents or other intellectual prop- erty 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 suppor t devices or systems.
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