Data logging in power-shy environments

Paul Boughton

The new SBC4670 from Micro/sys is a suitable choice for remote terminals, protocol conversion or data logging in power-shy environments because it matches the fast, yet low-power, PX270 ARM processor with an abundance of onboard communication formats: power-over-Ethernet, socket modem capable of GSM/GPRS, CDMA, Bluetooth, on-board GPS and/or CAN bus.

Fitting on the 4.5 x 6.5in (114 x 165mm) EPIC footprint, the board’s multimedia capabilities include support for an 800 x 600 colour flat panel display, audio output, and debounced keypad input, making it a good choice for sophisticated point-of-sale terminals, kiosks, or graphical industrial control panels.

The industrial control and monitoring applications are served by eight channels of 14-bit A/D with simultaneous reads, eight channels of 14-bit D/A and 24 channels of digital I/O. The SBC4670 is rated for -40 to +85 degrees C operation.

The SBC4670's powerful Intel PXA270 processor is based on the ARM5 core, which implements a super-pipelined RISC architecture and adds multiple integrated peripherals. The PXA270, running up to 520 MHz, can dynamically shift velocity in response to performance or power consumption changes. Also onboard are an on-chip cache, watchdog timer, an SDRAM controller, a Compact Flash interface and a USB host controller.

For communication requirements, the SBC4670 features five serial ports. The 10/100BASE-T Ethernet controller can include the option of power-over-Ethernet (POE), which supplies the board with 15W of power through the Ethernet connector. This eliminates the need for an external board power supply. Four of the serial ports have RS232 transceivers, while the remaining serial port is configured for RS485 communication.

With 128MB of SDRAM, and a 64MB resident flash array, feature-rich operating systems are a good match. The SBC4670 can boot Linux, Windows CE, and VxWorks from its onboard flash. I/O expansion through the Compact Flash socket allows users to implement additional storage and I/O devices such as WiFi cards. The SBC4670 has a 16-bit PC/104 bus interface that allows access to numerous off-the-shelf boards such as modems, analogue I/O or digital I/O. The SBC4670 stackthrough version is useful for plugging into a custom OEM I/O card.

For more information, visit www.embeddedsys.com

"