7721 datasheet(436/577 Pages) RENESAS

436 / 577 page

APPLICATION

7721 Group User’s Manual

16–33

16.1 Memory connection

Fig. 16.1.29 Timing chart for example of M5M44170CJ (256K ! 16 bits) connection (external bus width = 16 bits)

BLE/BHE

tASR = 0 (min)

AC573

(M5M44170AJ)

A8, A9

(OE)

RAS

CAS

MA0–MA7

A16/D0–A23/D7,

A8/D8–A15/D15

tw(EL) = 135 (min)

tw(RASL) = 120 (min)

tw(CASL) = 92.5 (min)

td(RAS-CAS) = 28 (min)

tw(RASH) = 60 (min)

td(E-RASL) = 30 (max)

td(RA-RAS) = 5 (min)

td(E-CA) = 60 (max)

Input data

Address

tOEAV = 20 (max)

tRACV = 70 (max)

tCLZV = 5 (min)

tCACV = 20 (max)

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

td(CA-CAS) = 5 (min)

td(E-CASL) = 77.5 (max)

Row address

Column address

tAAV = 35 (max)

tsu(DL/DH-E)

≥ 30 t

OEZV

= 0–20

td(AH-E) = 15 (min)

tw(EL) = 135 (min)

tw(RASL) = 120 (min)

tw(CASL) = 55 (min)

tw(RASH) = 60 (min)

td(R/W-E) = 20 (min)

td(E-CASL) = 80–115

MA0–MA9

A16/D0–A23/D7,

A8/D8–A15/D15

V : Specification of M5M44170CJ-7

The others are specifications of M37721.

Address

Data

AC32(tPHL) ! 2

tWCSV = 0 (min)

tWCHV = 15 (min)

td(RA-RAS) = 5 (min)

th(RAS-RA) = 18 (min)

AC32(tPHL) ! 2

th(CAS-CA) = 60 (min)

td(CA-CAS) = 10 (min)

tDHV = 15 (min)

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

Row address

Column address

RAS

CAS

R/W

WL/WH

td(BLE/BHE–E) = 20 (min)

(Unit : ns)

7721 Datasheet(PDF) 436 Page - Renesas Technology Corp

7721 Datasheet(HTML) 436 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL