mc68hc908jw32 Freescale Semiconductor, Inc, mc68hc908jw32 Datasheet - Page 115

• Manufacturer Part Number: mc68hc908jw32
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

8.9.3 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.
8.9.4 TIM Channel Status and Control Registers
Each of the TIM channel status and control registers:
Freescale Semiconductor
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Flags input captures and output compares
Enables input capture and output compare interrupts
Selects input capture, output compare, or PWM operation
Selects high, low, or toggling output on output compare
Selects rising edge, falling edge, or any edge as the active input capture trigger
Selects output toggling on TIM overflow
Selects 0% and 100% PWM duty cycle
Selects buffered or unbuffered output compare/PWM operation
Address: $000D
Address: $000E
Address: $000F
Reset the TIM counter before writing to the TIM counter modulo registers.
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
Figure 8-7. TIM Counter Modulo Register High (TMODH)
Figure 8-8. TIM Counter Modulo Register Low (TMODL)
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
0
1
1
Figure 8-6. TIM Counter Registers Low (TCNTL)
= Unimplemented
14
6
6
0
6
1
6
6
1
MC68HC908JW32 Data Sheet, Rev. 5
13
5
5
0
5
1
5
5
1
NOTE
12
4
4
0
4
1
4
4
1
11
3
3
0
3
1
3
3
1
10
2
2
0
2
1
2
2
1
1
1
0
1
9
1
1
1
1
Bit 0
Bit 0
Bit 0
Bit 8
Bit 0
Bit 0
0
1
1
I/O Registers
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