Specifications

Multi Slave Product Re£erence Manual Section 2
COUNTER/TIMER CIRCUIT
The counter/timer circuit is contained on the DUART device. As
its name implies, it may be used as a timer (programmable divi-
der) or a counter, providing an appropriate indication when the
specified countdown value has reached zero.
It should be noted that unlike the 280 eTC, the DUART's counter/-
timer uses a 15-bit countdown register, providing much greater
£lexibility in its application.
Appendix H contains the data sheet £or the Signetics 2681 device.
2581 DUART Specifications
Poge 2-12