HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 404

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

10.6
Application programmers should note that the following kinds of contention can occur in the 8-bit
timer.
10.6.1
If a timer counter clock pulse is generated during the T
takes priority, so that the counter is cleared and the write is not performed.
Figure 10.10 shows this operation.
388
ø
Address
Internal write signal
Counter clear signal
TCNT
Usage Notes
Contention between TCNT Write and Clear
Figure 10.10 Contention between TCNT Write and Clear
TCNT write cycle by CPU
T
1
N
TCNT address
2
state of a TCNT write cycle, the clear
T
2
H'00