mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 352

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 11 Pulse Width Modulator with Fault Protection (PMF15B6CV2)
11.3.2.34 PMF Deadtime C Register (PMFDTMC)
Read anytime and write only if MTG is set. This register cannot be modified after the WP bit is set.
352
Module Base + 0x0000
PMFDTMC
Reset
Field
11–0
W
R
15
0
0
PMF Deadtime C — The 12-bit value written to this register is the number of PWM clock cycles in
complementary channel operation. A reset sets the PWM deadtime register to a default value of 0x0FFF,
selecting a deadtime of 4096-PWM clock cycles minus one bus clock cycle.
Note: Deadtime is affected by changes to the prescaler value. The deadtime duration is determined as follows:
= Unimplemented or Reserved
14
0
0
DT = P PMFDTMC – 1, where DT is deadtime, P is the prescaler value, PMFDTMC is the programmed
value of dead time. For example: if the prescaler is programmed for a divide-by-two and the PMFDTMC is
set to five, then P = 2 and the deadtime value is equal to DT = 2
case exists when the P = 1, then DT = PMFDTMC.
13
0
0
Figure 11-40. PMF Deadtime C Register (PMFDTMC)
12
0
0
Table 11-45. PMFDTMC Field Descriptions
11
1
MC9S12E256 Data Sheet, Rev. 1.08
10
1
1
9
1
8
Description
1
7
PMFDTMC
1
6
1
5
5 – 1 = 9 IPbus clock cycles. A special
4
1
1
3
Freescale Semiconductor
1
2
1
1
1
0