Datasheet

Chapter 12 Pulse-Width Modulator (PWM8B6CV1)
MC9S12E128 Data Sheet, Rev. 1.07
404 Freescale Semiconductor
Figure 12-34. PWM Clock Select Block Diagram
2
4 8 16 32 64 128
PCKB2 PCKB1 PCKB0
M
U
X
Clock A
Clock B
Clock SA
Clock A/2, A/4, A/6,....A/512
PRESCALE SCALE
Divide by Prescaler Taps:
PFRZ
FREEZE
Bus Clock
CLOCK SELECT
M
U
X
PCLK0
Clock to
PWM Ch 0
M
U
X
PCLK2
Clock to
PWM Ch 2
M
U
X
PCLK1
Clock to
PWM Ch 1
M
U
X
PCLK4
Clock to
PWM Ch 4
M
U
X
PCLK5
Clock to
PWM Ch 5
M
U
X
PCLK3
Clock to
PWM Ch 3
Load
DIV 2
PWMSCLB
8-Bit Down Counter
Clock SB
Clock B/2, B/4, B/6,....B/512
M
U
X
PCKA2 PCKA1 PCKA0
PWME5:0
Count = 1
Load
DIV 2
PWMSCLA
8-Bit Down Counter
Count = 1