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CBM-230/231 User’s Manual
18
CITIZEN
6.3.2 Electrical Characteristics
(1) Input signal level
All input signals are at the TTL level.
"HIGH" level: 2.0 V at minimum
"LOW" level : 0.8 V at maximum
(2) Output signal level
All output signals are at the TTL level.
"HIGH" level: 2.4 V at minimum
"LOW" level : 0.4 V at maximum
(3) Input/output conditions
All input signals are pulled up at 3.3 kΩ.
All output signals are pulled up at 3.3 kΩ.