36 Network Controllers Manual
CPU-3/1N and CPU-3/2N Control Module Cards
Description
The control module CPU cards contain the circuitry and memory
necessary to support control module I/O and processing functions.
REV_____________IC___________
CHECK SUM__________________
CPU
RAM
DATA BASE
[NWC-014.CDR]
U1
U2
U3
U4
CPU Card
Application
A CPU card is required in each control module to support all
processing functions.
Specifications
Specifications
Processor 8 Bit Microcontroller
Memory U2 - 256K RAM, Working Memory
Controller Firmware U3 - 512K EPROM
Configuration Software U4 - 256K EEPROM
Speed 11 MHz
Firmware revision version may be determined by reading the label on
the chip in socket U3.
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