HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 364

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

11. Watchdog Timer
11.4
During interval timer operation, an overflow generates an interval timer interrupt (WOVI). The
interval timer interrupt is requested whenever the OVF flag is set to 1 in TCSR.
11.5
Contention between TCNT Write and Increment: If a timer counter clock pulse is generated
during the T
incremented. See figure 11.8.
Changing CKS2 to CKS0 Bit: Halt TCNT by clearing the TME bit to 0 in TCSR before
changing the values of bits CKS2 to CKS0.
Rev.4.00 Aug. 20, 2007 Page 320 of 638
REJ09B0395-0400
Interrupts
Usage Notes
3
state of a write cycle to TCNT, the write takes priority and the timer count is not
φ
TCNT
Internal write
signal
TCNT input
clock
TCNT
Figure 11.8 Contention between TCNT Write and Count up
T
CPU: TCNT write cycle
1
N
T
2
T
3
M
Counter write data