Pepper Computer Modular Computers RS232 User Manual

SMART I/O User’s Manual

©1996 PEP Modular Computers GmbH

March 12, 1996

Page 3 - 3

Chapter 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.

Controller
   - Frequency
   - Firmware

  MC68HC705C8A
  4 MHz
  PEP Firmware for OTP device

Interface Speed

  Set to 1 MHz

Power Consumption

  Typ. 25 mW

Temperature Range
   - Storage
   - Standard
   - Extended

 
  -20

°

C to + 125

°

C

  0

°

C to +70

°

C

  -40

°

C to +85

°

C

Operating Humidity

0 to 95% non-condensing

Weight

260g (without modules, blank
panels or screw terminals

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.