Smart-Ext; Specifications - PEP Modular Computers Modular Computers RS485 User Manual

Chapter 3 SMART-EXT

3. SMART-EXT

The SMART-EXT is a carrier unit enabling the connection of a further 2
SMART-Modules thereby enhancing the I/O capacity of the SMART I/O
system. Up to 4 of these extensions may be cascaded via a 10-wire flat-band
cable with integrated 3-wire SPI (Serial Peripheral Interface). To achieve a
common interface between modules, a SMART I/O 'C' library is provided by
PEP.

3.1 Specifications

The SPI follows a Motorola defined communication protocol which is
beyond the scope of this manual to describe. More information may be found
by referring to the relevant data-sheets.
March 12, 1996
Controller
- Frequency
- Firmware
Interface Speed
Power Consumption
Temperature Range
- Storage
- Standard
- Extended
Operating Humidity
Weight
©1996 PEP Modular Computers GmbH
SMART I/O User's Manual
MC68HC705C8A
4 MHz
PEP Firmware for OTP device
Set to 1 MHz
Typ. 25 mW
-20 C to + 125 C
0 C to +70 C
-40 C to +85 C
0 to 95% non-condensing
260g (without modules, blank
panels or screw terminals
3
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