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AT91RM9200 (ARM9) Board, Ethernet, 4x RS232/485, 2x USB Host, SD US$310.00

AT91RM9200 (ARM9) Board, Ethernet, 4x RS232/485, 2x USB Host, SD


  • 100% Linux 2.6.x compatible computing platform
  • 64MB SDRAM and 32MB Flash
  • 512KB non-volatile SRAM (M-508T only)
  • -20 to 80C wide-temperature operation (M-508T only)
  • Ultra-low power consumption, less than 3 Watts
  • One 10/100Mbps Ethernet port
  • Four 921.6Kbps RS-232/485 TTY ports
  • Two USB 2.0 host ports for functionality expansion
  • One SD memory card slot inside for storage expansion
  • 32x CMOS-level digital I/Os (GPIO)
  • Single 5V power input
  • GNU C/C++ tool chain for Linux/Windows environment

The M-508/M-508T is a mini-mighty Linux-ready ARM9-based single board computer. Users can operate the M-508/M-508T the same way as they do on a normal Linux desktop. The M-508/M-508T comes equipped with one Ethernet, four RS-232/485 ports, two USB 2.0 host ports, plus one SD memory card slot and 32x GPIOs in an incredible small package measuring only 105x 75mm.

Operates in -20 to 80C Environment (M-508T only)

The standard version of the board - the M-508 - is specified for an operating temperature range from 0C to 70C. The board is also available in an extended temperature version - the M-508T - which operates from -20C to +80C. You can select the desired temperature range from a drop-down selection menu at the bottom of this page.

512K Non-Volatile SRAM (M-508T only)

The extended temperature version, M-508T, also provides 512KB non-volatile SRAM for fast and safe data retention, eliminating the need for an unreliable, external backup battery.

Four 921.6Kbps RS-232/485 TTY Ports

The M-508 provides four 921.6Kbps RS-232/485 TTY ports. Port 1, 2, 3 support standard RS-232/485. Port 4 supports RS-232/422/485. Port 2 also features full RS-232 supporting for modem connection.

Thirty-two CMOS-level GPIOs

The M-508 comes with 32x CMOS-level digital I/Os. Each I/O pin can be individually programmed as input or output.

Software Specifications


  • CPU: ATMEL 180MHz AT91RM9200 (ARM9, w/MMU)
  • Memory: 64MB SDRAM, 32MB Flash
  • SRAM: 512KB, non-volatile (M-508T only)

Network Interface

  • One port, 10/100BaseT, RJ-45 connector
  • Protection: 1.5KV magnetic isolation

TTY (Serial) Ports

  • Four RS-232/485 ports, software select
  • Port 2: supports full modem signals
  • Port 4: also supports RS-422 mode
  • Connector: 10-pin header, male

TTY (Serial) Port Parameters

  • Baud Rate: up to 921.6 Kbps
  • Parity: None, Even, Odd, Mark, Space
  • Data Bits: 5,6,7,8
  • Stop Bit: 1, 1.5, 2 bits
  • Flow Control: RTS/CTS, XON/XOFF, None

USB 2.0 compliant Host Ports

  • Two ports, supports low-speed (1.5Mbps) and full- speed (12Mbps) data rate

CMOS-level Digital I/Os (GPIO)

  • No. of pins: thirty-two pins
  • Each pin can be programmed as input or output

Mass Storage

  • One SD 1.0 compliant socket


  • WatchDog Timer: yes, for kernel use
  • Real Time Clock: yes
  • Buzzer: yes
  • Power input: +5VDC, 600mA typical
  • Dimension: 105 x 75mm
  • Operation Temperature:
  • M-508: 0 to 70C(32 to 158F)
  • M-508T: -20 to 80C(-4 to 176F)
  • Regulation: CE Class A, FCC Class A

This AT91RM9200 ARM9 Board is available in two versions:

  • The M-508 is specified for a temperature range of 0 to 70C and has no F-RAM
  • The M-508T is specified for a extended temperature range of-20 to 80C and includes a 512k non-volatile F-RAM

Available Options:
Temperature Range:

Optional Recommended Products for this Item
Ethernet Cable, CAT5E 350MHz Unshielded, 7ft.+ US$3.60
USB 2.0 Cable, 6ft. A-Male / Mini-USB (5-pin) B-Male+ US$6.00
2x5 (10-pin) 0.1" pitch IDC Female to DB9 Male Flat Ribbon Cable+ US$6.90
Power Supply 3-12V DC, U.S. plug, 6 connection tips+ US$11.00
Power Supply 3-12V DC, US/UK/Euro/AU Plugs, 100-240VAC+ US$13.00

This product was added to our catalog on Monday 29 September, 2008.


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