MC68HC908KX8 Datasheet, PDF (238/310 Pages) Motorola, Inc – Microcontrollers

Timer Interface Module (TIM)
16.8.3 TIM Counter Modulo Registers
The read/write TIM modulo registers (TMODH and TMODL) 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.
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 16-6. TIM Counter Modulo Registers (TMODH and TMODL)
NOTE: Reset the TIM counter before writing to the TIM counter modulo registers.
Technical Data
238
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
Timer Interface Module (TIM)
MOTOROLA