mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 344

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 7 Enhanced Capture Timer (S12ECT16B8CV2)
7.3.2.26
Read: Anytime
Write: Anytime
All bits reset to zero.
344
PTMPS[7:0]
PTMPS7
PTPS7
Reset
Field
7:0
0
0
0
0
0
1
0
0
0
0
0
0
0
W
R
Table 7-34. Precision Timer Modulus Counter Prescaler Select Examples when PRNT = 1
PTMPS7
Figure 7-48. Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
Precision Timer Modulus Counter Prescaler Select Bits — These eight bits specify the division rate of the
modulus counter prescaler. These are effective only when the PRNT bit of TSCR1 is set to 1.
some possible division rates.
The newly selected prescaler division rate will not be effective until a load of the load register into the modulus
counter count register occurs.
Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
PTMPS6
0
PTPS6
7
Table 7-32. Precision Timer Prescaler Selection Examples when PRNT = 1
0
0
0
0
1
1
0
0
0
0
0
0
0
PTMPS6
PTMPS5
PTPS5
0
6
0
0
0
1
1
1
0
0
0
0
0
0
0
Table 7-33. PTMCPSR Field Descriptions
PTMPS5
MC9S12XDP512 Data Sheet, Rev. 2.17
PTPS4
PTMPS4
0
5
0
0
1
1
1
1
0
0
0
0
0
0
0
PTMPS4
PTPS3
PTMPS3
0
4
0
1
1
1
1
1
0
0
0
0
0
0
0
Description
PTMPS3
PTPS2
PTMPS2
1
1
1
1
1
1
0
3
0
0
0
0
1
1
1
PTPS1
PTMPS2
PTMPS1
1
1
1
1
1
1
0
2
0
0
1
1
0
0
1
PTPS0
PTMPS1
PTMPS0
Freescale Semiconductor
1
1
1
1
1
1
0
1
0
1
0
1
0
1
0
Table 7-34
Prescale
Prescaler
Factor
PTMPS0
Division
128
256
16
32
64
Rate
8
0
0
shows
1
2
3
4
5
6
7