mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 1158
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mc9s12xf512
Manufacturer Part Number
mc9s12xf512
Description
S12x Microcontrollers 16-bit Automotive Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12XF512.pdf
(1306 pages)
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Chapter 26 Enhanced Capture Timer (ECT16B8CV3)
26.3.2.27 Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
Read: Anytime
Write: Anytime
All bits reset to zero.
1158
Module Base + 0x002F
PTMPS[7:0]
PTPS7
Reset
Field
7:0
0
0
0
0
0
0
0
0
0
0
0
0
1
W
R
Figure 26-50. Precision Timer Modulus Counter Prescaler Select Register (PTMCPSR)
PTMPS7
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.
0
PTPS6
7
Table 26-34. Precision Timer Prescaler Selection Examples when PRNT = 1
0
0
0
0
0
0
0
0
0
0
0
1
1
PTMPS6
PTPS5
0
6
0
0
0
0
0
0
0
0
0
0
1
1
1
MC9S12XF - Family Reference Manual, Rev.1.19
Table 26-35. PTMCPSR Field Descriptions
PTMPS5
PTPS4
0
5
0
0
0
0
0
0
0
0
0
1
1
1
1
PTMPS4
PTPS3
0
4
0
0
0
0
0
0
0
0
1
1
1
1
1
Description
PTMPS3
PTPS2
0
0
0
0
1
1
1
1
1
1
1
1
1
0
3
PTPS1
PTMPS2
0
0
1
1
0
0
1
1
1
1
1
1
1
0
2
PTPS0
PTMPS1
Freescale Semiconductor
0
1
0
1
0
1
0
1
1
1
1
1
1
0
1
Table 26-36
Prescale
Factor
PTMPS0
128
256
16
32
64
1
2
3
4
5
6
7
8
0
0
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