MC68HC11PH8 Datasheet, PDF (170/264 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit

T8AI
&
T8AF
0
Data bus
0
0
Data bus
Load _{8-bit down-counter}
Underßow
detect
CSA0
CSA1
Clock
Timer
A
Modulus
timer
interrupt
request
+
EXTALi
EXTALi/4
EXTALi/8
CSA2
Clock
select
T8BI
&
T8BF
T8ADR
Data bus
CLK64
÷2
0
Data bus
0
PRB
+ ^Load
Data bus
8-bit down-counter
Underßow
detect
CSB0
Timer
8
CSB1
Clock
B
CSB2
Clock
T8BDR
PH7
Stop
select
Data bus
EXTALi
EXTALi/4
Timer A output clock
EXTALi/8
Timer C output clock
&
Data bus
PH6
Stop
EXTALi
EXTALi/4
EXTALi/8
T8CI
T8CF
0
0
PRC
CSC0
CSC1
CSC2
+ ^Load
Data bus
8-bit down-counter
Underßow
detect
Clock
Clock
select
T8CDR
Timer B output clock
Timer A output clock
Data bus
Timer
C
MOTOROLA
8-36
Figure 8-7 8-bit modulus timer system
TIMING SYSTEM
TPG
MC68HC11PH8