mc68hc912bc32 Freescale Semiconductor, Inc, mc68hc912bc32 Datasheet - Page 126
mc68hc912bc32
Manufacturer Part Number
mc68hc912bc32
Description
M68hc12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC912BC32.pdf
(334 pages)
- Current page: 126 of 334
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Pulse-Width Modulator (PWM)
126
CLOCK SOURCE
CLOCK EDGE SYNC
PWENx
PWENx
CLOCK SOURCE
CLOCK EDGE SYNC
PPOL = 0
PPOL = 1
(ECLK)
(ECLK)
GATE
Figure 11-2. Block Diagram of PWM Center-Aligned Output Channel
GATE
Figure 11-1. Block Diagram of PWM Left-Aligned Output Channel
PPOL = 0
PPOL = 1
PWDTY
RESET
M68HC12B Family Data Sheet, Rev. 9.1
PWCNTx
PWCNTx
PWDTY
UP COUNTER ONLY
RESET
8-BIT COMPARE =
(PWPER − PWDTY)
8-BIT COMPARE
8-BIT COMPARE =
DUTY CYCLE
CENTR = 0
8-BIT COMPARE
CENTR = 1
PWDTYx
PWPERx
PERIOD
PWDTYx
PWPERx
PWPER
PWPER
×
2
×
2
S
T
R
Q
Q
Q
Q
PPOLx
PPOLx
MUX
DATA REGISTER
MUX
FROM PORT P
DATA REGISTER
FROM PORT P
Freescale Semiconductor
PWDTY
MUX
MUX
DRIVER
TO PIN
DRIVER
TO PIN
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