SH7011 Datasheet, PDF(196/292 Page) Renesas Technology Corp – CMOS single-chip microprocessors

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SH7011 Datasheet, PDF (196/292 Pages) Renesas Technology Corp – CMOS single-chip microprocessors

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11.5 Notes on Use

Take care that the contentions described in sections 11.5.1â11.5.3 do not arise during CMT

operation.

11.5.1 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

11.6 shows the timing.

CMCNT write cycle

T1

T2

CK

Address

CMCNT

Internal

write signal

Compare

match signal

CMCNT

N

H'0000

Figure 11.6 CMCNT Write and Compare Match Contention

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