MC68HC11PH8 Datasheet, PDF (163/264 Pages) Motorola, Inc – High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit

CON34
PWEN3
PWEN4
CNT4
Clock
CNT3 select
PCLK3 PCLK4
Clock B
reset
8-bit counter
PCLK1 PCLK2
CNT2
Clock
CNT1 select
÷2
EQ _{8-bit comparator}
PWSCAL
Clock A
PCKB1 PCKB2 PCKB3
Prescale select
8
÷1, 2, 4, 8, 16, 32, 64, 128
Prescale select
÷1, 2, 4, 8
4
PCKA1
PCKA2
MCU
E clock
CON12
PWEN1
PWEN2
PPOL1
8-bit comparator ^EQ
PWDTY1
SQ
MUX
Bit 0
PH0/
PW1
8-bit comparator ^EQ
PWPER1
reset
16-bit
PWM
RQ
8
control
8-bit comparator ^EQ
PWDTY2
SQ
MUX
Bit 1
PH1/
PW2
8-bit comparator ^EQ
RQ
reset
carry
PWPER2
CON12
PPOL2
PPOL3
Port H
pin
control
8-bit comparator ^EQ
PWDTY3
SQ
MUX
Bit 2
PH2/
PW3
8-bit comparator ^EQ
PWPER3
reset
16-bit
PWM
control
RQ
8-bit comparator ^EQ
PWDTY4
SQ
MUX
Bit 3
PH3/
PW4
8-bit comparator ^EQ
RQ
PWPER4
reset
PPOL4
carry
CON34
MC68HC11PH8
Figure 8-5 PWM timer block diagram
TIMING SYSTEM
TPG
MOTOROLA
8-29