mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 296
mc68hc908as60
Manufacturer Part Number
mc68hc908as60
Description
Mc68hc908as60 Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908AS60.pdf
(454 pages)
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Modulo Timer (TIM)
19.8.1 TIM Status and Control Register
Technical Data
Address:
The TIM status and control register:
TOF — TIM Overflow Flag Bit
TOIE — TIM Overflow Interrupt Enable Bit
Reset:
Read:
Write:
•
•
•
•
•
This read/write flag is set when the TIM counter resets to $0000 after
reaching the modulo value programmed in the TIM counter modulo
registers. Clear TOF by reading the TIM status and control register
when TOF is set and then writing a logic 0 to TOF. If another TIM
overflow occurs before the clearing sequence is complete, then
writing logic 0 to TOF has no effect. Therefore, a TOF interrupt
request cannot be lost due to inadvertent clearing of TOF. Reset
clears the TOF bit. Writing a logic 1 to TOF has no effect.
This read/write bit enables TIM overflow interrupts when the TOF bit
becomes set. Reset clears the TOIE bit.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = TIM counter has reached modulo value.
0 = TIM counter has not reached modulo value.
1 = TIM overflow interrupts enabled
0 = TIM overflow interrupts disabled
Enables TIM interrupt
Flags TIM overflows
Stops the TIM counter
Resets the TIM counter
Prescales the TIM counter clock
Figure 19-3. TIM Status and Control Register (TSC)
$004B
Bit 7
TOF
0
0
Go to: www.freescale.com
= Unimplemented
Modulo Timer (TIM)
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
3
0
0
MC68HC908AS60 — Rev. 1.0
PS2
2
0
PS1
1
0
Bit 0
PS0
0
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