mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 179
mc68hc708mp16
Manufacturer Part Number
mc68hc708mp16
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC708MP16.pdf
(398 pages)
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9.11.6 Dead-Time Write-Once Register
MC68HC708MP16
Freescale Semiconductor
NOTE:
NOTE:
—
Rev. 3.1
Address:
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
When reading these bits, the value read is the buffer value (not
necessarily the value the PWM generator is currently using).
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.
Reset:
Read:
Write:
Pulse Width Modulator for Motor Control (PWMMC)
These buffered read/write bits allow the PWM clock frequency to be
modified as shown in
Figure 9-45. Dead-Time Write-Once Register (DEADTM)
$0036
BIT 7
Bit 7
1
PRSC1:PRSC0
Prescaler Bits
BIT 6
6
1
00
01
10
11
Table 9-10. PWM Prescaler
Table
BIT 5
1
5
Pulse Width Modulator for Motor Control (PWMMC)
9-10.
BIT 4
1
4
PWM Clock Frequency
BIT 3
3
1
f
f
f
op
op
op
f
op
/2
/4
/8
BIT 2
2
1
BIT 1
1
1
Technical Data
BIT 0
Bit 0
1
179
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