SH7050 Datasheet, PDF (489/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 15 Compare Match Timer (CMT)
15.5 Notes on Use
Take care that the contentions described in sections 15.5.1–15.5.3 do not arise during CMT
operation.
15.5.1 Contention between CMCNT Write and Compare Match
If a compare match signal is generated during the T₂ state of the CMCNT counter write cycle, the
CMCNT counter clear has priority, so the write to the CMCNT counter is not performed. Figure
15.6 shows the timing.
CMCNT write cycle
T₁
T₂
CK
Address
CMCNT
Internal
write signal
Compare
match signal
CMCNT
N
H'0000
Figure 15.6 CMCNT Write and Compare Match Contention
Rev. 5.00 Jan 06, 2006 page 469 of 818
REJ09B0273-0500