HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 385

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

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 9.56 shows the operation timing when a TGR compare match is specified as the clearing
source, and H'FFFF is set in TGR.
368
Figure 9.56 Contention between Overflow and Counter Clearing
TCNT input
clock
TCNT
Counter
clear signal
TGF
TCFV
ø
H'FFFF
Disabled
H'0000