W942508CH-6 datasheet(9/47 Pages) WINBOND

Part #	W942508CH-6

Description	8M x 4 BANKS x 8 BIT DDR SDRAM

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Manufacturer	WINBOND [Winbond]

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W942508CH

Publication Release Date: May 21, 2003

- 9 -

Revision A3

7.3 Capacitance

(VDD = VDDQ = 2.5V

±0.2V, f = 1 MHz, TA = 25 °C, VOUT (DC) = VDDQ/2, VOUT (Peak to Peak) = 0.2V)

SYMBOL

PARAMETER

MIN.

MAX.

DELTA

(MAX.)

UNIT

CIN

Input Capacitance (except for CLK pins)

2.0

3.0

0.5

pF

CCLK

Input Capacitance (CLK pins)

2.0

3.0

0.25

pF

CI/O

DQ, DQS, DM Capacitance

4.0

5.0

0.5

pF

CNC1

NC1 Pin Capacitance

-

1.5

-

pF

CNC2

NC2 Pin Capacitance

4.0

5.0

-

pF

Notes: These parameters are periodically sampled and not 100% tested.

The NC2 pins have additional capacitance for adjustment of the adjacent pin capacitance.

The NC2 pins have Power and Ground clamp.

7.4 Leakage and Output Buffer Characteristics

SYMBOL

PARAMETER

MIN.

MAX.

UNITS

NOTES

II(L)

Input Leakage Current

(0V < VIN < VDDQ, All other pins not under test = 0V)

-2

2

µA

IO(L)

Output Leakage Current

(Output disabled, 0V < VOUT < VDDQ)

-5

5

µA

VOH

Output High Voltage

(under AC test load condition)

VTT

+0.76

-

V

VOL

Output Low Voltage

(under AC test load condition)

-

VTT

-0.76

V

IOH (DC)

Output Minimum Source DC Current

-15.2

-

mA

4, 6

IOL (DC)

Output Minimum Sink DC Current

Full Strength

15.2

-

mA

4, 6

IOH (DC)

Output Minimum Source DC Current

-10.4

-

mA

5

IOL (DC)

Output Minimum Sink DC Current

Half Strength

10.4

-

mA

5

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