7733 datasheet(722/940 Pages) RENESAS

722 / 940 page

ELECTRICAL CHARACTERISTICS

7735 Group User’s Manual

15–8

15.9 Memory expansion mode and Microprocessor mode : with wait 1

th(ALE–A)

td(WE–DQ)

td(An–RDE)

th(WE–DQ)

tsu(A–ALE)

Address/Data output

A0/D0–A15/D15

(BYTE = “L”)

A0/D0–A7/D7

(BYTE = “H”)

td(WE– 1)

td(CS–WE)

td(WE– 1)

tw(WE)

td(RSMP–WE)

XIN

CS0–CS4 output

WEL output

WEH output

RDE output

When external memory area is accessed With wait 1 (Wait bit = “0” and Wait selection bit = “1”)

td(RDE– 1)

Memory expansion mode and Microprocessor mode :

td(An–WE)

ALE output

<<Write>>

<<Read>>

tw(H)

tw(L)

tf tr

th(ALE–A)

th(WE–CS)

Address output

A8–A15 (BYTE = “H”)

A16, A17

Address

tw(ALE)

Data

td(A–WE)

Data input

D0–D15 (BYTE = “L”)

D0–D7 (BYTE = “H”)

RSMP output

td(ALE–WE)

th(WE–An)

td(RDE– 1)

th(RDE–CS)

td(CS–RDE)

th(RDE–An)

td(ALE–RDE)

tpxz(RDE–DZ)

tpzx(RDE–DZ)

td(A–RDE)

tsu(D–RDE)

th(RDE–D)

tw(RDE)

td(RSMP–RDE)

Measuring conditions (CS0–CS4, A0/D0–A15/D15, A16, A17,

ALE, WEL, WEH, RDE, RSMP)

•VCC = 5 V ± 10 %

•Output timing voltage : VOL = 0.8 V, VOH = 2.0 V

•Data input

: V IL = 0.8 V, VIH = 2.5 V

Port Pi output

(i = 4–8)

Port Pi input

(i = 4–8)

Measuring conditions (Port P4–P8)

•VCC = 5 V ± 10 %

•Input timing voltage

: VIL = 1.0 V, VIH = 4.0 V

•Output timing voltage : VOL = 0.8 V, VOH = 2.0 V

td(WE–PiQ)

tsu(PiD–RDE)

th(RDE–PiD)

Address

tw(H)

tw(L)

tf tr

Address

Data

tw(ALE)

tsu(A–ALE)

Address

th( 1–RSMP)

Address

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