h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 416

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 16-Bit Timer Pulse Unit (TPU)
Contention between Overflow/Underflow and Counter Clearing: If overflow/underflow and
counter clearing occur simultaneously, the TCFV/TCFU flag in TSR is not set and TCNT clearing
takes precedence.
Figure 10.56 shows the operation timing when a TGR compare match is specified as the clearing
source, and H'FFFF is set in TGR.
Rev. 5.00 Sep 22, 2005 page 390 of 1136
REJ09B0257-0500
Figure 10.56 Contention between Overflow and Counter Clearing
TCNT input
clock
TCNT
Counter
clear signal
TGF
TCFV
H'FFFF
Prohibited
H'0000