mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 175

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

9.11.4 PWM Control Register 1
MC68HC708MP16
Freescale Semiconductor
—
Rev. 3.1
Address:
PWM control register 1 controls PWM enabling/disabling, the loading of
new modulus, prescaler, and PWM values, and the PWM correction
method. In addition, this register contains the software disable bits to
force the PWM outputs to their inactive states (according to the disable
mapping register).
PWMEN — PWM Module Enable
LDOK— Load OK
Reset:
Read:
Write:
Pulse Width Modulator for Motor Control (PWMMC)
This read/write bit enables and disables the PWM generator and the
PWM pins. When PWMEN is clear, the PWM generator is disabled
and the PWM pins are in the high-impedance state (unless
OUTCTL = 1).
When the PWMEN bit is set, the PWM generator and PWM pins are
activated.
For more information, see
This write-only bit allows the counter modulus, counter prescaler, and
PWM values in the buffered registers to be used by the PWM
generator. These values will not be used until the LDOK bit is set and
a new PWM load cycle begins. Internally this bit is automatically
cleared after the new values are loaded (however, this bit always
reads zero).
1 = PWM generator and PWM pins enabled
0 = PWM generator and PWM pins disabled
1 = Okay to load new modulus, prescaler, and PWM values at
0 = Not okay to load new modulus, prescaler, and PWM values
$0020
DISX
Bit 7
beginning of next PWM load cycle
0
Figure 9-43. PWM Control Register 1 (PCTL1)
DISY
6
0
PWMINT
0
5
Pulse Width Modulator for Motor Control (PWMMC)
9.8 Initialization and the PWMEN
PWMF
0
4
ISENS1
3
0
ISENS0
2
0
LDOK
1
0
0
Technical Data
PWMEN
Bit.
Bit 0
0
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