7721 datasheet(567/577 Pages) RENESAS

567 / 577 page

7721 Group User’s Manual

17–104

APPENDIX

Appendix 11. Electrical characteristics

td(AL–E)

td(AM–E)

td(AH–E)

td(AM–ALE)

td(AH–ALE)

tw(ALE)

td(BLE–E)

td(BHE–E)

td(R/W–E)

th(E–AL)

th(E–AM)

th(E–DLQ)

th(E–DHQ)

tpzx(E–DLZ)

tpzx(E–DHZ)

th(E–BLE)

th(E–BHE)

th(E–R/W)

tw(EL)

tsu(A–DL)

tsu(A–DH)

tsu(ALE–DL)

tsu(ALE–DH)

Table 4 Calculation formulas for bus timing depending on f(XIN

)

(Vcc = 5 V ± 10 %, Vss = 0 V, Ta = –20 to 85 °C)

Wait bit = “1”

Wait bit = “0”

Wait bit = “1”

Wait bit = “0”

Wait bit = “1”

Wait bit = “0”

Symbol

Unit

1 ! 109

f(XIN)

1 ! 109

f(XIN)

1 ! 109

f(XIN)

1 ! 109

f(XIN)

1 ! 109

f(XIN)

1 ! 109

f(XIN)

1 ! 109

f(XIN)

1 ! 109

f(XIN)

2 ! 109

f(XIN)

4 ! 109

f(XIN)

3 ! 109

f(XIN)

5 ! 109

f(XIN)

3 ! 109

f(XIN)

5 ! 109

f(XIN)

– 25

– 35

– 18

– 20

– 22

– 20

– 22

– 25

– 65

– 70

– 25

– 70

– 65

Calculation formula

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