Datasheet

Section 11 16-Bit Timer Pulse Unit (TPU)
Page 784 of 1408 R01UH0309EJ0500 Rev. 5.00
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
(3) TCFV Flag/TCFU Flag Setting Timing
Figure 11.41 shows the timing for setting of the TCFV flag in TSR by overflow occurrence, and
the TCIV interrupt request signal timing.
Figure 11.42 shows the timing for setting of the TCFU flag in TSR by underflow occurrence, and
the TCIU interrupt request signal timing.
Overflow
signal
TCNT
(overflow)
TCNT input
clock
H'FFFF H'0000
TCFV flag
TCIV interrupt
φ
Figure 11.41 TCIV Interrupt Setting Timing
Underflow
signal
TCNT
(underflow)
TCNT
input clock
H'0000 H'FFFF
TCFU flag
TCIU interrupt
φ
Figure 11.42 TCIU Interrupt Setting Timing