W3E32M72SR-250SBM datasheet(11/19 Pages) WEDC

Part #	W3E32M72SR-250SBM

Description	32Mx72 REGISTERED DDR SDRAM

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Manufacturer	WEDC [White Electronic Designs Corporation]

Direct Link	http://www.whiteedc.com

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11 / 19 page

W3E32M72SR-XSBX

11

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

White Electronic Designs

July 2006

Rev. 3

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

DDR DC ELECTRICAL CHARACTERISTICS AND OPERATING CONDITIONS (NOTES 1-5, 16)

VCC, VCCQ = +2.5V ± 0.2V; -55°C ≤ TA ≤ +125°C

Parameter/Condition

Symbol

Min

Max

Units

Supply Voltage (36, 41)

VCC

2.3

2.7

V

I/O Supply Voltage (36, 41, 44)

VCCQ

2.3

2.7

V

Input Leakage Current: Any input 0V ≤ VIN ≤ VCC (All other pins not under test = 0V)

II

-2

2

µA

Output Leakage Current: I/Os are disabled; 0V ≤ VOUT ≤ VCCQ

IOZ

-5

5

µA

Output Levels: Full drive option (37, 39)

High Current (VOUT = VCCQ - 0.373V, minimum VREF, minimum VTT)

Low Current (VOUT = 0.373V, maximum VREF, maximum VTT)

IOH

-12

-

mA

IOL

12

-

mA

Output Levels: Reduced drive option (38, 39)

High Current (VOUT = VCCQ - 0.763V, minimum VREF, minimum VTT)

Low Current (VOUT = 0.763V, maximum VREF, maximum VTT)

IOHR

-9

-

mA

IOLR

9-

mA

I/O Reference Voltage (6,44)

VREF

0.49 x VCCQ

0.51 x VCCQ

V

I/O Termination Voltage (7, 44)

VTT

VREF - 0.04

VREF + 0.04

V

AC INPUT OPERATING CONDITIONS

VCC, VCCQ = +2.5V ± 0.2V; -55°C ≤ TA ≤ +125°C

Parameter/Condition

Symbol

Min

Max

Units

Input High (Logic 1) Voltage

VIH

VREF +0.310

—

V

Input Low (Logic 0) Voltage

VIL

—VREF -0.310

V

REGISTER ELECTRICAL CHARACTERISTICS

Parameter

Test Conditions

VCC and VCCQ Min

Typ

Max

Unit

II

All inputs

VI = VCC or GND

2.7V

-5

+5

µA

ICC

Static standby

RESET# = GND

2.7V

10

µA

Static operating

RESET# = VCC, VI = VIH(AC) or VIL(AC)

IO = 0

112

mA

ICCD

Dynamic operating

– clock only

RESET# = VCC, VI = VIH(AC) or VIL(AC), CK and CK# switching

50% duty cycle

IO = 0

2.5V

56

µA/ MHz

Dynamic operating

– per each data input

RESET# = VCC, VI = VIH(AC) or VIL(AC). CK and CK#

switching 50% duty cycle. All data input switching at one-half

clock frequency, 50% duty cycle

180

µA/clock

MHz

Note: All typical values are at VCC = 2.5V, TA = 25°C.

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