Z86C61 Datasheet, PDF (24/46 Pages) Zilog, Inc. – CMOS Z8 MICROCONTROLLER

FUNCTIONAL DESCRIPTION (Continued)
Internal Data Bus
Z86C61/62/96
Z8^® MICROCONTROLLER
Write
Write
Read
OSC
÷2
÷4
Internal
Clock
External Clock
PRE0
Initial Value
Register
6-Bit
Down
Counter
T0
Initial Value
Register
T0
Current Value
Register
8-bit
Down
Counter
IRQ4
Serial I/O
Clock
÷2
Tout
P36
Clock
Logic
÷4
6-Bit
Down
Counter
8-Bit
Down
Counter
IRQ5
Internal Clock
Gated Clock
Triggered Clock
TIN P31
PRE1
Initial Value
Register
T1
Initial Value
Register
T1
Current Value
Register
Write
Write
Read
Internal Data Bus
Figure 22. Counter/Timers Block Diagram
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