MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 232

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Timer Interface (TIM)
16.9.3 TIM Counter Modulo Registers
Advance Information
232
NOTE:
Figure 16-6. TIM Counter Modulo Registers (TMODH and 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 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.
Reset the TIM counter before writing to the TIM counter modulo registers.
Reset:
Reset:
Read:
Write:
Read:
Write:
Register Name and Address: TMODH — $0024
Register Name and Address: TMODL — $0025
Bit 15
Bit 7
Bit 7
Bit 7
R
1
1
Timer Interface (TIM)
R = Reserved
Bit 14
Bit 6
6
1
6
1
Bit 13
Bit 5
5
1
5
1
Bit 12
Bit 4
4
1
4
1
Bit 11
Bit 3
3
1
3
1
MC68HC708AS48
Bit 10
Bit 2
2
1
2
1
Bit 9
Bit 1
1
1
1
1
MOTOROLA
—
Rev. 4.0
Bit 0
Bit 8
Bit 0
Bit 0
1
1