Hitachi H8S/2646 Hardware Manual page 416

Hitachi 16-bit single-chip microcomputer h8s/2646 series

Table of Contents

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 10-56 shows the operation timing when a TGR compare match is specified as the clearing

source, and H'FFFF is set in TGR.

clear signal

Figure 10-56 Contention between Overflow and Counter Clearing