mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 180

• Manufacturer Part Number: mc68hc908mr24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Pulse-Width Modulator for Motor Control
Advance Information
180
NOTE:
NOTE:
NOTE:
NOTE:
When reading this bit, the value read is the buffer value (not necessarily
the value the output control block is currently using).
The IPOLx bits take effect at the beginning of the next load cycle,
regardless of the state of the load okay bit, LDOK.
IPOL2 — Top/Bottom Correction Bit for PWM Pair 2 (PWMs 3 and 4)
When reading this bit, the value read is the buffer value (not necessarily
the value the output control block is currently using).
IPOL3 — Top/Bottom Correction Bit for PWM Pair 3 (PWMs 5 and 6)
When reading this bit, the value read is the buffer value (not necessarily
the value the output control block is currently using).
PRSC1 and PRSC0 — PWM Prescaler Bits
When reading these bits, the value read is the buffer value (not
necessarily the value the PWM generator is currently using).
Pulse-Width Modulator for Motor Control (PWMMC)
This buffered read/write bit selects which PWM value register is used
if top/bottom correction is to be achieved without current sensing.
This buffered read/write bit selects which PWM value register is used
if top/bottom correction is to be achieved without current sensing.
These buffered read/write bits allow the PWM clock frequency to be
modified as shown in
1 = Use PWM value register 4
0 = Use PWM value register 3
1 = Use PWM value register 6
0 = Use PWM value register 5
PRSC1 and PRSC0
Prescaler Bits
00
01
10
11
Table 9-9. PWM Prescaler
Table
9-9.
PWM Clock Frequency
f
f
f
op
op
op
f
op
MC68HC908MR24
/2
/4
/8
Freescale Semiconductor
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Rev. 4.1