MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 652

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Timer Module (TIM16B8CV3)
Note: Bits related to available channels have functional significance. Writing to unavailable bits has no effect. Read from
20.3.2.19 Precision Timer Prescaler Select Register (PTPSR)
Read: Anytime
Write: Anytime
All bits reset to zero.
The Prescaler can be calculated as follows depending on logical value of the PTPS[7:0] and PRNT bit:
PRNT = 1 : Prescaler = PTPS[7:0] + 1
652
OCPD[7:0}
PTPS[7:0]
...
PTPS7
Reset
Field
Field
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
7:0
unavailable bits return a zero.
0
0
0
W
R
PTPS7
Output Compare Pin Disconnect Bits
0 Enables the timer channel port. Output Compare action will occur on the channel pin. These bits do not affect
1 Disables the timer channel port. Output Compare action will not occur on the channel pin, but the output
Precision Timer Prescaler Select Bits — These eight bits specify the division rate of the main Timer prescaler.
These are effective only when the PRNT bit of TSCR1 is set to 1.
in this case.
The newly selected prescale factor will not take effect until the next synchronized edge where all prescale counter
stages equal zero.
0
7
PTPS6
the input capture or pulse accumulator functions
compare flag still become set.
Table 20-24. Precision Timer Prescaler Selection Examples when PRNT = 1
0
0
0
Figure 20-29. Precision Timer Prescaler Select Register (PTPSR)
PTPS6
PTPS5
0
6
0
0
0
MC9S12G Family Reference Manual,
Table 20-23. PTPSR Field Descriptions
Table 20-22. OCPD Field Description
PTPS5
PTPS4
5
0
0
0
0
PTPS4
PTPS3
0
4
0
0
0
Description
Description
PTPS2
PTPS3
0
0
0
0
3
Rev.1.01
Table 20-24
PTPS1
PTPS2
0
0
1
2
0
shows some selection examples
PTPS0
Freescale Semiconductor
PTPS1
0
1
0
0
1
Prescale
Factor
PTPS0
1
2
3
0
0