mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 202
mc68hc912dg128
Manufacturer Part Number
mc68hc912dg128
Description
M68hc12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC912DG128.pdf
(452 pages)
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Pulse Width Modulator
PWPERx — PWM Channel Period Registers
PWDTYx — PWM Channel Duty Registers
Technical Data
202
PWDTY0
PWDTY1
PWDTY2
PWDTY3
RESET:
PWPER0
PWPER1
PWPER2
PWPER3
RESET:
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
1
1
6
6
6
6
6
1
6
6
6
6
6
1
Read and write anytime.
The value in the period register determines the period of the associated
PWM channel. If written while the channel is enabled, the new value will
not take effect until the existing period terminates, forcing the counter to
reset. The new period is then latched and is used until a new period
value is written. Reading this register returns the most recent value
written. To start a new period immediately, write the new period value
and then write the counter forcing a new period to start with the new
period value.
Period = Channel-Clock-Period
Period = Channel-Clock-Period
Read and write anytime.
Freescale Semiconductor, Inc.
For More Information On This Product,
5
5
5
5
5
1
5
5
5
5
5
1
Go to: www.freescale.com
Pulse Width Modulator
4
4
4
4
4
1
4
4
4
4
4
1
3
3
3
3
3
1
3
3
3
3
3
1
(PWPER
(2
2
2
2
2
2
1
2
2
2
2
2
1
PWPER)
MC68HC912DG128 — Rev 3.0
1)
1
1
1
1
1
1
1
1
1
1
1
1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
1
1
(CENTR = 0)
(CENTR = 1)
MOTOROLA
$004C
$004D
$004E
$004F
$0050
$0051
$0052
$0053
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