upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 123
upd78f0103hmca1-5a4-a
Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103HMCA1-5A4-A.pdf
(438 pages)
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(2) Measurement of two pulse widths with free-running counter
Figure 6-20. Control Register Settings for Measurement of Two Pulse Widths with Free-Running Counter
Remark 0/1: Setting 0 or 1 allows another function to be used simultaneously with pulse width measurement.
When 16-bit timer counter 00 (TM00) is operated in free-running mode, it is possible to simultaneously measure
the pulse widths of the two signals input to the TI000 pin and the TI010 pin.
When the edge specified by bits 4 and 5 (ES000 and ES001) of prescaler mode register 00 (PRM00) is input to
the TI000 pin, the value of TM00 is taken into 16-bit timer capture/compare register 010 (CR010) and an interrupt
request signal (INTTM010) is set.
Also, when the edge specified by bits 6 and 7 (ES100 and ES101) of PRM00 is input to the TI010 pin, the value
of TM00 is taken into 16-bit timer capture/compare register 000 (CR000) and an interrupt request signal
(INTTM000) is set.
Specify both the rising and falling edges as the edges of the TI000 and TI010 pins, by using bits 4 and 5 (ES000
and ES001) and bits 6 and 7 (ES100 and ES101) of PRM00.
Sampling is performed at the interval selected by prescaler mode register 00 (PRM00), and a capture operation is
only performed when the valid level of the TI000 pin or TI010 pin is detected twice, thus eliminating noise with a
short pulse width.
PRM00
TMC00
CRC00
See the description of the respective control registers for details.
ES101
1
7
0
7
0
ES100
(a) 16-bit timer mode control register 00 (TMC00)
1
6
0
6
0
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
(b) Capture/compare control register 00 (CRC00)
ES001
(c) Prescaler mode register 00 (PRM00)
1
5
0
5
0
ES000
1
4
0
4
0
User’s Manual U16846EJ3V0UD
TMC003
3
0
0
3
0
TMC002
CRC002
2
0
1
1
TMC001
PRM001
CRC001
0/1
0/1
0
OVF00
PRM000
CRC000
0/1
0
1
Free-running mode
CR000 used as capture register
Captures valid edge of TI010 pin to CR000
CR010 used as capture register
Selects count clock (setting “11” is prohibited).
Specifies both edges for pulse width detection.
Specifies both edges for pulse width detection.
123
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