CBM-230/231User ’sManual
18 CITIZEN
6.3.2 Electrical Characteristics(1) Input signal level
All input signalsare a t theTTL level.
"HIGH" level: 2.0 V at minimum
"LOW" level : 0.8 V atm aximum
(2) Outputsignal leve l
All outputsignal s are at the TTL level.
"HIGH" level: 2.4 V at minimum
"LOW" level : 0.4 V atm aximum
(3) Input/output conditions
Allinput signals arepulled up at3.3 kΩ.
All output signals are pulled up at 3.3k Ω.