SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 474

• Manufacturer Part Number: SC9S12XS256J1MAA
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Timer Module (TIM16B8CV2) Block Description
16.3.2.12 Main Timer Interrupt Flag 1 (TFLG1)
Read: Anytime
Write: Used in the clearing mechanism (set bits cause corresponding bits to be cleared). Writing a zero
will not affect current status of the bit.
474
Module Base + 0x000E
PR[2:0]
Reset
TCRE
Field
TOI
7
3
2
W
R
Timer Overflow Interrupt Enable
0 Interrupt inhibited.
1 Hardware interrupt requested when TOF flag set.
Timer Counter Reset Enable — This bit allows the timer counter to be reset by a successful output compare 7
event. This mode of operation is similar to an up-counting modulus counter.
0 Counter reset inhibited and counter free runs.
1 Counter reset by a successful output compare 7.
If TC7 = 0x0000 and TCRE = 1, TCNT will stay at 0x0000 continuously. If TC7 = 0xFFFF and TCRE = 1, TOF
will never be set when TCNT is reset from 0xFFFF to 0x0000.
Timer Prescaler Select — These three bits select the frequency of the timer prescaler clock derived from the
Bus Clock as shown in
C7F
0
7
The newly selected prescale factor will not take effect until the next
synchronized edge where all prescale counter stages equal zero.
C6F
0
6
Figure 16-20. Main Timer Interrupt Flag 1 (TFLG1)
PR2
0
0
0
0
1
1
1
1
Table
Table 16-13. TSCR2 Field Descriptions
S12XS Family Reference Manual, Rev. 1.09
Table 16-14. Timer Clock Selection
16-14.
C5F
0
5
PR1
0
0
1
1
0
0
1
1
C4F
NOTE
0
4
Description
PR0
0
1
0
1
0
1
0
1
C3F
0
3
Bus Clock / 128
Bus Clock / 16
Bus Clock / 32
Bus Clock / 64
Bus Clock / 1
Bus Clock / 2
Bus Clock / 4
Bus Clock / 8
Timer Clock
C2F
0
2
Freescale Semiconductor
C1F
0
1
C0F
0
0