MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 325

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

68HC908AZ32A — Rev 0.0
MOTOROLA
Address:
TOF — TIMB Overflow Flag Bit
TOIE — TIMB Overflow Interrupt Enable Bit
TSTOP — TIMB Stop Bit
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
This read/write flag is set when the TIMB counter resets to $0000 after
reaching the modulo value programmed in the TIMB counter modulo
registers. Clear TOF by reading the TIMB status and control register
when TOF is set and then writing a logic 0 to TOF. If another TIMB
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 TIMB overflow interrupts when the TOF bit
becomes set. Reset clears the TOIE bit.
This read/write bit stops the TIMB counter. Counting resumes when
TSTOP is cleared. Reset sets the TSTOP bit, stopping the TIMB
counter until software clears the TSTOP bit.
For More Information On This Product,
1 = TIMB counter has reached modulo value
0 = TIMB counter has not reached modulo value
1 = TIMB overflow interrupts enabled
0 = TIMB overflow interrupts disabled
1 = TIMB counter stopped
0 = TIMB counter active
Figure 19-4. TIMB Status and Control Register (TBSC)
$0040
Bit 7
TOF
R
0
0
Timer Interface Module B (TIMB)
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= Reserved
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
R
3
0
0
Timer Interface Module B (TIMB)
PS2
2
0
Advance Information
PS1
1
0
I/O Registers
Bit 0
PS0
0
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