WED3EG7218S403JD3 查看數據表（PDF） - White Electronic Designs Corporation

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WED3EG7218S403JD3

128MB – 16Mx72 DDR SDRAM UNBUFFERED

White Electronic Designs Corporation 

White Electronic Designs

WED3EG7218S-JD3

PRELIMINARY

ICC SPECIFICATIONS AND TEST CONDITIONS

DDR400: VCC = VCCQ = +2.6V ± 0.1V; DDR333, 266, 200: VCC = VCCQ = +2.5V ± 0.2V includes DDR SDRAM component only

Parameter

Operating

Current

Operating

Current

Symbol Conditions

One device bank; Active =

Precharge; TRC=TRC(MIN);

ICC0

TCK=TCK(MIN); DQ,DM and DQS

inputs changing once per clock cycle;

Address and control inputs changing

once every two cycles

One device bank; Active-read-

Precharge; Burst = 2; TRC=TRC(MIN);

ICC1 TCK=TCK(MIN); lout=0mA; Address

and control inputs changing once per

clock cycle

DDR400@

CL=3

Max

DDR333@

CL=2.5

Max

DDR266@

CL=2

Max

990

1260

DDR266@

CL=2.5

Max

990

1260

DDR200@

CL=2

Max

810

1035

Precharge

Power-Down

Standby

Current

Idle Standby

Current

ICC2P

All device banks idle; Power-down

mode; TCK=TCK(MIN); CKE=(low)

CS# = High; All device banks idle;

TCK=TCK(MIN); CKE=high; Address

ICC2F and other control inputs changing

once per clock cycle. VIN = VREF for

DQ, DQS and DM.

270

270

255

495

495

405

Active Power-

Down Standby

Current

Active Standby

Current

Operating

Current

Operating

Current

ICC3P

One device bank active; Power-down

mode; TCK(MIN); CKE=(low)

CS# = High; CKE = High; One

device bank; Active-Precharge; TRC

= TRAS(MAX); TCK = TCK(MIN); DQ,

ICC3N DM and DQS inputs changing twice

per clock cycle; Address and other

control inputs changing once per

clock cycle.

Burst = 2; Reads; Continous burst;

One device bank active; Address

ICC4R and control inputs changing once per

clock cycle;

TCK = TCK(MIN); lout = 0mA

Burst = 2; Writes; Continous burst;

One device bank active; Address

ICC4W

and control inputs changing once per

clock cycle; TCK = TCK(MIN); DQ, DM

and DQS inputs changing twice per

clock cycle.

315

315

270

540

540

450

1800

1800

1485

1935

1935

1530

Auto Refresh

Current

Self Refresh

Current

ICC5 TRC = TRC(MIN)

ICC6 CKE ≤ 0.2V

Standard

Low Power

1935

1935

1530

18

18

18

9

9

9

Units

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

June 2006

Rev. 2

5

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

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