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ARM Based Embedded Application Modules.

- Introduction.
- LPC2138 Based Embedded Application Module.
- AT91SAM7S256 Based Embedded Application Module.
- Pricing Information.

ARM Proto Boards.

- Introduction to ARM Proto Boards.
- Atmel ARM Proto Board.
- Philips ARM Proto Board.
- Frequently Asked questions.
- Pricing Information.

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AT91SAM7S256 Based Embedded Application Module


  • 16/32-bit ARM7TDMI micon AT91SAM7S256 operating at 55MHz.
  • 20MHz reference crystal oscillator.
  • On-board 16Mb SPI flash memory using AT45DB161DB Data flash.
  • On-board Real Time Clock using PCF8593 with battery back-up.
  • Micon operating mode can be set using 3-pin jumpers.
  • On board programming facility.
  • JTAG interface connector to perform real time emulation.
  • All the I/O lines of Micon are terminated in 50 Pin FRC header.
  • SOC operating at 20MHz with following features:
    • SPI interface with master ARM CPU.
    • Supports 5MHz(max) communication speed.
    • Supports 2x4 / 3x4 / 4x4 / 5x4 / 6x4 / 8x8 Matrix Keyboard.
    • Standard PS/2 PC Keyboard Interface.
    • 8-Digits of seven segment display interface.
    • 1x16 / 2x16 / 4x16 / 2x20 / 4x20 character LCD interface.
    • Supports 128x64 Graphics LCD interface.
    • Facility to measure four analog supply voltages.
  • All the I/O lines of SOC are terminated in a 50 Pin FRC header.


The Hardware Block Diagram:


Proto Board meant for the AT91SAM7S256 EAM.

One Proto Board comes along with EAM board to study and interface the user defined external modules. This Proto Board has two 50 Pin FRC headers, to mount the EAM board on the Proto Board. A proto area is available for assembling user interface modules. In addition, one dual voltage regulator circuit and one single voltage regulator circuit is available on this Proto Board to generate three user defined supply voltages.

Both regulating circuits accept either DC or AC input supply. AC/DC input for dual voltage regulator is given through Proto Board connector CON1. Enable AC/DC selection jumper depending upon the input voltage. Diodes D1, D2 and Capacitors C1, C6 form filter circuit to filter the input supply voltage. Regulator IC U1 generate positive supply V1 and regulator IC U2 generates negative supply V2. LED1 and LED2 indicates presence of supply voltages V1 and V2 respectively.

AC/DC Supply for single voltage regulator is given through connector CON2. Diode D3 and Capacitor C7 filters the input supply. Regulator IC U3 regulates input supply and provides regulated supply voltage V3. LED3 indicates presence of V3.

You can use these regulated supply voltages V1, V2 and V3 to power external interface modules. And also you can provide power to EAM board.