Freescale Semiconductor, Inc.
Timing System
CON34
PWEN3
PWEN4
PCKB1 PCKB2 PCKB3
CNT4
CNT3
Clock B
Prescale select
8
4
Clock
select
÷1, 2, 4, 8, 16, 32, 64, 128
r
e
D
Prescale select
reset
8-bit counter
÷1, 2, 4, 8
PCLK3
PCLK4
S
o kc
C
PCKA1
PCKA2
EQ
8-bit comparator
PWSCAL
÷2
MCU
E clock
PCLK1
PCLK2
CNT2
CNT1
Clock
select
Clock A
CON12
PWEN1
PWEN2
PPOL1
EQ
EQ
S
Q
Q
8-bit comparator
PH0/
Bit 0
Bit 1
MUX
MUX
PWDTY1
PW1
R
8-bit comparator
16-bit
PWM
control
PWPER1
reset
reset
EQ
EQ
S
Q
Q
8-bit comparator
PH1/
PW2
PWDTY2
R
8-bit comparator
PWPER2
Port H
pin
control
PPOL2
PPOL3
carry
CON12
EQ
EQ
S
Q
Q
8-bit comparator
PH2/
PW3
Bit 2
Bit 3
MUX
PWDTY3
R
8-bit comparator
16-bit
PWM
control
PWPER3
reset
reset
EQ
EQ
S
Q
Q
8-bit comparator
PH3/
PW4
MUX
PWDTY4
R
8-bit comparator
PWPER4
PPOL4
carry
CON34
Technical Data
MC68HC11P2 — Rev 1.0
Timing System
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