mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 222

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

FlexTimer Module (FTMV1)
11-22
Reset
W
R
DTVAL
DTPS
Field
7–6
5–0
0
7
Figure 11-18. FTM Deadtime Insertion Control Register (FTMxDEADTIME)
DTPS
Deadtime prescaler value. DTPS[1:0] bits select the division factor of the system clock (as shown in
Table
DTPS[1:0] bits are write protected, these bits can only be written if WPDIS = 1.
Deadtime value. DTVAL[5:0] bits select the deadtime value using the deadtime prescaled clock (as
shown in ). The deadtime insertion in all channels is disabled when DTVAL[5:0] is zero.
DTVAL[5:0] bits are write protected, these bits can only be written if WPDIS = 1.
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
= Unimplemented or Reserved
11-16). This prescaled clock is used by the deadtime counter.
Table 11-17. Deadtime Value (number of system clock periods)
0
6
DTVAL
Table 11-16. Deadtime Prescale Factor Selection
Table 11-15. FTMxDEADTIME Field Descriptions
10
11
12
0
1
2
3
4
5
6
7
8
9
DTPS
0X
10
11
5
0
DTPS = 0X
10
11
12
1
2
3
4
5
6
7
8
9
Deadtime insertion is disabled
System Clock Divided-by
0
4
Description
DTPS = 10
16
12
16
20
24
28
32
36
40
44
48
1
4
4
8
0
3
DTVAL
DTPS = 11
0
112
128
144
160
176
192
2
16
32
48
64
80
96
Freescale Semiconductor
1
0
0
0