CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
User’s Manual U18172EJ2V0UD
102
Figure 6-24. Control Register Settings for Pulse Width Measurement with Free-Running Counter and
Two Capture Registers (with Rising Edge Specified)
(a) Capture/compare control register 00 (CRC00)
7
0
6
0
5
0
4
0
3
0
CRC002
1
CRC001
1
CRC000
1
CRC00
CR000 used as capture register
Captures to CR000 at inverse edge
to valid edge of TI000
Note
.
CR010 used as capture register
(b) Prescaler mode register 00 (PRM00)
ES110
0/1
ES100
0/1
ES010
0
ES000
1
3
0
2
0
PRM001
0/1
PRM000
0/1
PRM00
Selects count clock (setting “11” is prohibited).
Specifies rising edge for pulse width detection.
Setting invalid (setting “10” is prohibited.)
(c) 16-bit timer mode control register 00 (TMC00)
7
0
6
0
5
0
4
0
TMC003
0
TMC002
1
TMC001
0/1
OVF00
0
TMC00
Free-running mode
Note
If the valid edge of TI000 is specified to be both the rising and falling edges, 16-bit timer capture/compare
register 000 (CR000) cannot perform the capture operation. When the CRC001 bit value is 1, the TM00
count value is not captured in the CR000 register when a valid edge of the TI010 pin is detected, but the
input from the TI010 pin can be used as an external interrupt source because INTTM000 is generated at
that timing.
Remark
0/1: Setting 0 or 1 allows another function to be used simultaneously with pulse width measurement.
See the description of the respective control registers for details.