WED3DG649V75D2 datasheet(4/5 Pages) WEDC

Part #	WED3DG649V75D2

Description	64MB- 8M x 64 SDRAM UNBUFFERED

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Manufacturer	WEDC [White Electronic Designs Corporation]

Direct Link	http://www.whiteedc.com

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4 / 5 page

June 2003

Rev. 1

WED3DG649V-D2

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

White Electronic Designs

White Electronic Designs Corp. reserves the right to change products or speciﬁcations without notice.

OPERATING CURRENT CHARACTERISTICS

(VCC = 3.3V, 0°C

≤ TA ≤ 70°C)

Notes: 1. Measured with outputs open.

2. Refresh period is 64ms.

3. Unless otherwise noticed, input swing level is CMOS (VIH/VIL = VCC/VSSQ)

Parameters

Symbol

Conditions

Versions

Units

Note

133

100

Operating Current

(One bank active)

ICC1

Burst Length = 1

tRC ≥ tRC(min)

IOL = 0mA

520

440

mA

1

Precharge Standby Current

in Power Down Mode

ICC2P

CKE ≤ VIL(max), tCC = 10ns

10

mA

ICC2PS

CKE & CK ≤ VIL(max), tCC = ∞

10

mA

Precharge Standby Current

in Non-Power Down Mode

ICC2N

CKE ≥ VIH(min), CS ≥ VIH(min), tCC =10ns

Input signals are charged one time during 20

80

mA

ICC2NS

CKE ≥ VIH(min), CK ≤ VIL(max), tCC= ∞

Input signals are stable

40

mA

Active standby current in power-

down mode

ICC3P

CKE ≥ VIL(max), tCC = 10ns

20

mA

ICC3PS

CKE & CK ≤ VIL(max), tCC = ∞

20

Active standby in current non

power-down mode

ICC3N

CKE ≥ VIH(min), CS ≥ VIH(min), tCC = 10ns

Input signals are charged one time during 20ns

120

mA

ICC3NS

CKE ≥ VIH(min), CK ≤ VIL(max), tCC = ∞

input signals are stable

100

mA

Operating current (Burst mode)

ICC4

Io = mA

Page burst

4 Banks activated

tCCD = 2CK

600

520

mA

1

Refresh current

ICC5

tRC ≥ tRC(min)

880

760

mA

2

Self refresh current

ICC6

CKE ≤ 0.2V

10

mA

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