7721 datasheet(426/577 Pages) RENESAS

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APPLICATION

7721 Group User’s Manual

16–23

16.1 Memory connection

WE, WO

th(E-DLQ/DHQ) = 18 (min.)

(Unit : ns)

A1–A7

tw(EL) = 135 (min.)

AC32(tPLH)

AC573(tPHL)+AC139(tPHL)

tsu (D)VV

≥ 30

td(AL-E) = 15 (min.)

A8/D8–A15/D15

A16/D0–A18/D2

D3–D7

AC32(tPHL)

td (E-DLQ/DHQ) = 35 (max.)

V: Specifications of M5M28F102AFP-10

V V: Specifications of M5M5256DP-70LL

The others are specifications of M37721.

A1–A7

CE, S

External memory

data output

A8/D8–A15/D15

A16/D0–A18/D2

D3–D7

tw(EL) = 135 (min.)

tsu(DL/DH-E)

≥ 30

ta(OE)VV

tsu(A-DL/DH) = 130 (max.)

ta(AD)VV+AC573(tPHL/tPLH)

tDFV/tdis(OE)VV = 15 (max.)

(Guaranteed as kit.)

AC32(tPLH)

AC573(tPHL/tPLH)+AC139(tPHL)

td(AL-E) = 15 (min.)

tpzx(E-DLZ/DHZ) = 20 (min.)

ta(CE)V, ta(S)VV

AC32(tPHL)

Fig. 16.1.19 Timing chart for example of flash memory and SRAM connection (maximum model)

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