V53C8256H45 データシートの表示（PDF） - Mosel Vitelic Corporation

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V53C8256H45

ULTRA-HIGH SPEED, 256K x 8 FAST PAGE MODE CMOS DYNAMIC RAM

Mosel Vitelic Corporation  

MOSEL VITELIC

Waveforms of Write Cycle (OE Controlled Write)

VIH

RAS V IL

VIH

CAS V IL

ADDRESS VIH

V IL

VIH

WE V IL

OE VIH

V IL

I/O VIH

V IL

tAR (23)

tRAS (1)

t RC (2)

tCRP (13)

t RCD (6)

tCSH (4)

tRSH (W)(12)

tCAS (5)

tASR (8)

tRAD (24)

t RAH (9)

t CAR (44)

t CAH (11)

tASC (10)

ROW ADDRESS

COLUMN ADDRESS

tCWL (26)

t RWL(31)

t WP(29)

t WOH (34)

tOED (35)

tDH (33)

t DS (32)

VALID DATA-IN

V53C8256H

tRP (3)

t CRP (13)

8256H-09

Waveforms of Read-Modify-Write Cycle

RAS

CAS

ADDRESS

WE

OE

I/O

VIH

VIL

t CRP (13)

VIH

VIL

tASR (8)

VIH

ROW

VIL

ADDRESS

tRAD (24)

VIH

VIL

VIH

VIL

VIH VOH

VIL VOL

tAR (23)

tRWC (36)

tRRW (37)

tRCD (6)

tCSH (4)

tRSH (W)(25)

t CRW (40)

tRAH (9)

tASC (10)

COLUMN

ADDRESS

tRWD (39)

tCAH (11)

tAWD (41)

tCWD (38)

tCAA (20)

tOAC (17)

tCAC (18)

tRAC (19)

tLZ (21)

t OED (35)

tHZ (22)

VALID

DATA-OUT

tCWL (26)

tRWL (31)

tWP (29)

tDS (32)

VALID

DATA-IN

tDH (33)

tRP (3)

tCRP (13)

8256H-09

V53C8256H Rev. 1.2 July 1997

Don’t Care

Undefined

9

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