Omega OME-A822PG manual Programmable Timer/Counter, Direct Memory Access Channel DMA

1.3.7Programmable Timer/Counter

zType : 82C54 -8 programmable timer/counter

zCounters : Counter1 and counter2 are cascaded as a 32 bit pacer timer. Counter0 is a user available timer/counter. The software driver also uses counter0 to implement a machine independent timer.

zClock input frequency : DC to 10 MHz

zPacer output : 0.00047Hz to 0.5MHz

zInput ,gate : TTL compatible

zInternal Clock : 2 MHz

1.3.8Direct Memory Access Channel (DMA)

zLevel : CH1 or CH3, jumper selectable

zEnable : via DMA bit of control register

zTermination : by interrupt on T/C

zTransfer rate : 100K conversions/sec.

OME-A-822PGL/PGH Hardware Manual ---- 7