Z86C72 Datasheet, PDF (39/71 Pages) Zilog, Inc. – IR MICROCONTROLLER

Zilog
Counter/Timer Functional Blocks
CTR1 D5,D4
P31
Glitch
MUX
Filter
P20
Edge
Detector
Z86C72/C92/L72/L92
IR Microcontroller
1
Pos Edge
Neg Edge
CTR1 D6
CTR1 D3,D2
Figure 22. Glitch Filter Circuitry
Z8 Data Bus
Pos Edge
Neg Edge
HI8
CTR0 D4, D3
SCLK
Clock
Select
Clock
8-Bit
Counter T8
CTR0 D2
LO8
Z8 Data Bus
TC8H
TC8L
Figure 23. 8-Bit Counter/Timer Circuits
IRQ4
CTR0 D1
T8_OUT
DS97LVO0900
PRELIMINARY
6-39