NEC 78K0 User Manual page 147

Figure 6-24. Control Register Settings for Pulse Width Measurement by Means of Restart
7 6 5
TMC00 0 0 0
7 6 5
CRC00 0 0 0
ES101 ES100 ES001
PRM00 0/1 0/1 0
Figure 6-25. Timing of Pulse Width Measurement Operation by Means of Restart
(with Rising Edge Specified)
Count clock
TM00 count value
TI000 pin input
CR010 capture value
CR000 capture value
INTTM010
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
(with Rising Edge Specified)
(a) 16-bit timer mode control register 00 (TMC00)
4 TMC003 TMC002 TMC001 OVF00
0 1 0 0/1
(b) Capture/compare control register 00 (CRC00)
4 3 CRC002 CRC001 CRC000
0 0 1 1
(c) Prescaler mode register 00 (PRM00)
ES000 3 2 PRM001 PRM000
1 0 0 0/1
t
0000H 0001H D0
User's Manual U16227EJ2V0UD
0
Clears and starts at valid edge of TI000 pin.
1
CR000 used as capture register
Captures to CR000 at inverse edge to valid edge of TI000.
CR010 used as capture register
0/1
Selects count clock (setting "11" is prohibited).
Specifies rising edge for pulse width detection.
Setting invalid (setting "10" is prohibited.)
0000H 0001H D1 D2
D0
D1
D1 × t
D2 × t
0000H 0001H
D2
147