VG4616321B View Datasheet(PDF) - Vanguard International Semiconductor

Part Name

Description

MFG CO.

VG4616321B

CMOS Synchronous Graphic RAM

Vanguard International Semiconductor 

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VIS

Preliminary

Figure 14.1 Interleaving Column Read Cycle

(Burst Length = 4, CAS Latency = 1)

VG4616321B/VG4616322B

262,144x32x2-Bit

CMOS Synchronous Graphic RAM

CLK

CKE

T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22

t

CK1

CS

RAS

CAS

WE

DSF

BS

A9

RAx

RBw

A0 ~ A8

DQM

RAx CAx

RBw CBw

CBx

CBy

CAy

CBz

tRCD tAC1

DQ

Hi-Z

Ax0 Ax1 Ax2 Ax3 Bw0 Bw1 Bx0 Bx1 By0 By1 Ay0 Ay1 Bz0 Bz1 Bz2 Bz3

Activate

Command

Bank A

Read

Command

Bank A

Activate

Command

Bank B

Read

Command

Bank B

Read

Command

Bank B

Read

Command

Bank B

Read

Command

Bank A

Read

Command

Precharge

Command

Bank B

Bank A

Precharge

Command

Bank B

Document:1G5-0145

Rev.1

Page 54

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