CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
Preliminary User’s Manual U19014EJ1V0UD
175
(4) Timing of holding data by capture register
(a) When the valid edge is input to the TI000/TI010 pin and the reverse phase of the TI000 pin is detected while
CR000/CR010 is read, CR010 performs a capture operation but the read value of CR000/CR010 is not
guaranteed. At this time, an interrupt signal (INTTM000/INTTM010) is generated when the valid edge of the
TI000/TI010 pin is detected (the interrupt signal is not generated when the reverse-phase edge of the TI000
pin is detected).
When the count value is captured because the valid edge of the TI000/TI010 pin was detected, read the
value of CR000/CR010 after INTTM000/INTTM010 is generated.
Figure 6-56. Timing of Holding Data by Capture Register
N
N + 1
N + 2
X
N + 1
M
M + 1
M + 2
Count pulse
TM00 count value
Edge input
INTTM010
Value captured to CR010
Capture read signal
Capture operation is performed
but read value is not guaranteed.
Capture operation
(b) The values of CR000 and CR010 are not guaranteed after 16-bit timer/event counter 00 stops.
(5) Setting valid edge
Set the valid edge of the TI000 pin while the timer operation is stopped (TMC003 and TMC002 = 00). Set the
valid edge by using ES000 and ES001.
(6) Re-triggering one-shot pulse
Make sure that the trigger is not generated while an active level is being output in the one-shot pulse output mode.
Be sure to input the next trigger after the current active level is output.
electronic components distributor
