h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 409

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

Contention between TCNT Write and Clear Operations: If the counter clear signal is
generated in the T2 state of a TCNT write cycle, TCNT clearing takes precedence and the TCNT
write is not performed.
Figure 10.49 shows the timing in this case.
Address
Write signal
Counter clear
signal
TCNT
Figure 10.49 Contention between TCNT Write and Clear Operations
N
TCNT write cycle
TCNT address
T1
Rev. 5.00 Sep 22, 2005 page 383 of 1136
T2
Section 10 16-Bit Timer Pulse Unit (TPU)
H'0000
REJ09B0257-0500