MC68HC708MP16CFU

Manufacturer Part NumberMC68HC708MP16CFU
ManufacturerFreescale Semiconductor, Inc
MC68HC708MP16CFU datasheet
 


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Page 179/398:

Dead-Time Write-Once Register

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NOTE:
When reading this bit, the value read is the buffer value (not necessarily
the value the output control block is currently using).
PRSC1:PRSC0 — PWM Prescaler Bits
These buffered read/write bits allow the PWM clock frequency to be
modified as shown in
NOTE:
When reading these bits, the value read is the buffer value (not
necessarily the value the PWM generator is currently using).
9.11.6 Dead-Time Write-Once Register
This write-once register holds an 8-bit value which specifies the number
of CPU clock cycles to use for the dead-time when complementary PWM
mode is selected. After this register is written for the first time, it cannot
be rewritten unless a RESET occurs. The dead-time is not affected by
changes to the prescaler value.
Address:
Read:
Write:
Reset:
MC68HC708MP16
Rev. 3.1
Freescale Semiconductor
Pulse Width Modulator for Motor Control (PWMMC)
Pulse Width Modulator for Motor Control (PWMMC)
Table
9-10.
Table 9-10. PWM Prescaler
Prescaler Bits
PRSC1:PRSC0
00
01
10
11
$0036
Bit 7
6
5
BIT 7
BIT 6
BIT 5
1
1
1
Figure 9-45. Dead-Time Write-Once Register (DEADTM)
PWM Clock Frequency
f
op
f
/2
op
f
/4
op
f
/8
op
4
3
2
1
BIT 4
BIT 3
BIT 2
BIT 1
1
1
1
1
Technical Data
Bit 0
BIT 0
1
179