mc68hc05p9a Freescale Semiconductor, Inc, mc68hc05p9a Datasheet - Page 96
mc68hc05p9a
Manufacturer Part Number
mc68hc05p9a
Description
Hcmos Microcontroller Unit
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC05P9A.pdf
(158 pages)
- Current page: 96 of 158
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Timer
Timer Status
Register
96
IEDG — Input Edge
OLVL — Output Level
The timer status register (TSR) contains flags for the following events:
Reset:
$0013
Read:
Write:
The state of this read/write bit determines whether a positive or
negative transition on the PD7/TCAP pin triggers a transfer of the
contents of the timer registers to the input capture registers. Reset
has no effect on the IEDG bit.
The state of this read/write bit determines whether a logic 1 or a logic
0 appears on the TCMP pin when a successful output compare
occurs. Reset clears the OLVL bit.
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Positive edge (low-to-high transition) triggers input capture
0 = Negative edge (high-to-low transition) triggers input capture
1 = TCMP goes high on output compare
0 = TCMP goes low on output compare
An active signal on the PD7/TCAP pin, transferring the contents of
the timer registers to the input capture registers
A match between the 16-bit counter and the output compare
registers, transferring the OLVL bit to the TCMP pin
A timer rollover from $FFFF to $0000
Bit 7
ICF
U
Go to: www.freescale.com
Figure 52. Timer Status Register (TSR)
= Unimplemented
OCF
U
6
Timer
TOF
U
5
4
0
0
U = Unaffected
3
0
0
2
0
0
1
0
0
MOTOROLA
16-tim1ic1oc_a
Bit 0
0
0
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