HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 722

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: 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 16.52 shows the operation timing when a TGR compare match is specified as the clearing
source, and H'FFFF is set in TGR.
710
Figure 16.52 Contention between Overflow and Counter Clearing
P
TCNT input
clock
TCNT
Counter
clear signal
TGF
TCFV
Disabled
H'FFFF
H'0000