Z86L88 Datasheet, PDF (51/80 Pages) Zilog, Inc. – INFRARED REMOTE CONTROLLERS

Z86L88
Low-Voltage IR Microcontroller
44
CTR1 D5, D4
P31
MUX
P20
Glitch Filter
Edge Detector
CTR1 D6
CTR1 D3, D2
Figure 31. Glitch Filter Circuitry
Eight-Bit Counter/Timer Circuits
Figure 32 shows the 8-bit counter/timer circuits.
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
Figure 32. 8-Bit Counter/Timer Circuits
TC8L
Pos Edge
Neg Edge
IRQ4
CTR0 D1
T8_OUT
19-4614; Rev 0; 4/09