Chapter 8 Flashcards
1
Q
counters vs timers
A
- timers add
- counters multiply
2
Q
counters
A
normally retentive, keep accumulated value when power is shut off, need reset button to reset
3
Q
counter bits
A
- CU: count up
- CD: count down
- DN: done
- OV: overflow
- UN: underflow
- UA: update accumulator (only used with high speed counters)
4
Q
overflow (OV) bit
A
when counter counts past its max value (32767)
5
Q
high speed counter
A
counts high speed pulses from a high speed input
6
Q
OSR bit
A
- called one shot rising
- input instruction that triggers an event to occur one time
- assigned a boolean bit (B 3/whatever)
