MC68HC908LD64 Datasheet, PDF (164/362 Pages) Freescale Semiconductor, Inc – Microcontrollers

Timer Interface Module (TIM)
NOTE:
If you read TCNTH during a break interrupt, be sure to unlatch TCNTL
by reading TCNTL before exiting the break interrupt. Otherwise, TCNTL
retains the value latched during the break.
11.10.3 TIM Counter Modulo Registers (TMODH:TMODL)
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: $000E TMODH
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10
Bit9
Bit8
Write:
Reset: 1
1
1
1
1
1
1
1
Address: $000F TMODL
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Write:
Reset: 1
1
1
1
1
1
1
1
Figure 11-5. TIM Counter Modulo Registers (TMODH:TMODL)
NOTE: Reset the TIM counter before writing to the TIM counter modulo registers.
Data Sheet
164
Timer Interface Module (TIM)
MC68HC908LD64 — Rev. 3.0
Freescale Semiconductor