mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 215
mc68hc708mp16
Manufacturer Part Number
mc68hc708mp16
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC708MP16.pdf
(398 pages)
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11.9.1 TIMA Status and Control Register
MC68HC708MP16
Freescale Semiconductor
—
Rev. 3.1
Address:
The TIMA status and control register does the following:
TOF — TIMA Overflow Flag Bit
TOIE — TIMA Overflow Interrupt Enable Bit
Reset:
Read:
Write:
•
•
•
•
•
This read/write flag is set when the TIMA counter resets to $0000 after
reaching the modulo value programmed in the TIMA counter modulo
registers. Clear TOF by reading the TIMA status and control register
when TOF is set and then writing a logic 0 to TOF. If another TIMA
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 TIMA overflow interrupts when the TOF bit
becomes set. Reset clears the TOIE bit.
1 = TIMA counter has reached modulo value
0 = TIMA counter has not reached modulo value
1 = TIMA overflow interrupts enabled
0 = TIMA overflow interrupts disabled
Figure 11-4. TIMA Status and Control Register (TASC)
Enables TIMA overflow interrupts
Flags TIMA overflows
Stops the TIMA counter
Resets the TIMA counter
Prescales the TIMA counter clock
$000C
Bit 7
TOF
0
0
Timer Interface Module A (TIMA)
= Unimplemented
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
3
0
0
Timer Interface Module A (TIMA)
PS2
2
0
PS1
1
0
Technical Data
Bit 0
PS0
0
215
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