3069RF-ZTAT Datasheet, PDF(386/1003 Page) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

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3069RF-ZTAT Datasheet, PDF (386/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

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Contention between 16TCNT Word Write and Increment: If an increment pulse occurs in the

T3 state of a 16TCNT word write cycle, writing takes priority and 16TCNT is not incremented.

Figure 9.38 shows the timing in this case.

16TCNT word write cycle

T1

T2

T3

Ï

Address bus

16TCNT address

Internal write signal

16TCNT input clock

16TCNT

N

M

16TCNT write data

Figure 9.38 Contention between 16TCNT Word Write and Increment

Rev. 5.0, 09/04, page 364 of 978

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