MC68HC908RK2 Datasheet, PDF (130/158 Pages) Motorola, Inc – Microcontroller Unit

Timer Interface Module (TIM)
11.8.3 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 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.
Register Name and Address: TMODH—$0023
Bit 7
6
5
4
3
2
Read:
Bit 15
14
13
12
11
10
Write:
Reset: 1
1
1
1
1
1
1
Bit 0
9
Bit 8
1
1
Register Name and Address: TMODL—$0024
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 11-7. TIM Counter Modulo Registers (TMODH and TMODL)
NOTE
Reset the TIM counter before writing to the TIM counter modulo registers.
MC68HC908RK2 Data Sheet, Rev. 5.1
130
Freescale Semiconductor