MC908JB16DWE Datasheet, PDF (155/332 Pages) Freescale Semiconductor, Inc – Microcontrollers

Timer Interface Module (TIM)
Address: T1CNTL, $000D and T2CNTL, $0043
Bit 7
6
5
4
3
2
1
Bit 0
Read: Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 10-6. TIM Counter Registers Low (TCNTL)
10.10.3 TIM Counter Modulo Registers
The read/write TIM modulo registers contain the modulo value for the
TIM counter. When the TIM counter reaches the modulo value, the
overflow flag (TOF) becomes set, and the TIM counter resumes counting
from $0000 at the next timer clock. Writing to the high byte (TMODH)
inhibits the TOF bit and overflow interrupts until the low byte (TMODL) is
written. Reset sets the TIM counter modulo registers.
Address: T1MODH, $000E and T2MODH, $0044
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 15
14
13
12
11
10
Write:
9
Bit 8
Reset: 1
1
1
1
1
1
1
1
Figure 10-7. TIM Counter Modulo Register High (TMODH)
Address: T1MODL, $000F and T2MODL, $0045
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset: 1
1
1
1
1
1
1
1
Figure 10-8. TIM Counter Modulo Register Low (TMODL)
NOTE: Reset the TIM counter before writing to the TIM counter modulo registers.
MC68HC908JB16 — Rev. 1.1
Freescale Semiconductor
Timer Interface Module (TIM)
Technical Data
155