HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 696

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 11 16-Bit Timer Pulse Unit (TPU)
11.10.12 Contention between TCNT Write and Overflow/Underflow
If there is an up-count or down-count in the T
overflow/underflow occurs, the TCNT write takes precedence and the TCFV/TCFU flag in TSR is
not set.
Figure 11.53 shows the operation timing when there is contention between TCNT write and
overflow.
Rev.7.00 Mar. 18, 2009 page 628 of 1136
REJ09B0109-0700
Figure 11.53 Contention between TCNT Write and Overflow
φ
Address
Write signal
TCNT
TCFV flag
H'FFFF
TCNT write cycle
T
TCNT address
2
1
state of a TCNT write cycle, when
T
2
M
TCNT write data