S9S12GN32F0MLC Datasheet, PDF (737/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

Timer Module (TIM16B6CV3)
Table 22-4. TSCR1 Field Descriptions
Field
7
TEN
6
TSWAI
5
TSFRZ
4
TFFCA
3
PRNT
Description
Timer Enable
0 Disables the main timer, including the counter. Can be used for reducing power consumption.
1 Allows the timer to function normally.
If for any reason the timer is not active, there is no ÷64 clock for the pulse accumulator because the ÷64 is
generated by the timer prescaler.
Timer Module Stops While in Wait
0 Allows the timer module to continue running during wait.
1 Disables the timer module when the MCU is in the wait mode. Timer interrupts cannot be used to get the MCU
out of wait.
TSWAI also affects pulse accumulator.
Timer Stops While in Freeze Mode
0 Allows the timer counter to continue running while in freeze mode.
1 Disables the timer counter whenever the MCU is in freeze mode. This is useful for emulation.
TSFRZ does not stop the pulse accumulator.
Timer Fast Flag Clear All
0 Allows the timer flag clearing to function normally.
1 For TFLG1(0x000E), a read from an input capture or a write to the output compare channel (0x0010–0x001F)
causes the corresponding channel flag, CnF, to be cleared. For TFLG2 (0x000F), any access to the TCNT
register (0x0004, 0x0005) clears the TOF flag. This has the advantage of eliminating software overhead in a
separate clear sequence. Extra care is required to avoid accidental flag clearing due to unintended accesses.
Precision Timer
0 Enables legacy timer. PR0, PR1, and PR2 bits of the TSCR2 register are used for timer counter prescaler
selection.
1 Enables precision timer. All bits of the PTPSR register are used for Precision Timer Prescaler Selection, and
all bits.
This bit is writable only once out of reset.
22.3.2.5 Timer Toggle On Overflow Register 1 (TTOV)
Module Base + 0x0007
7
6
R
RESERVED RESERVED
W
5
TOV5
4
TOV4
3
TOV3
2
TOV2
Reset
0
0
0
0
0
0
Figure 22-9. Timer Toggle On Overflow Register 1 (TTOV)
Read: Anytime
Write: Anytime
1
TOV1
0
0
TOV0
0
MC9S12G Family Reference Manual, Rev.1.23
Freescale Semiconductor
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