EDJ1108BDBG datasheet(7/147 Pages) ELPIDA

Part #	EDJ1108BDBG

Description	1G bits DDR3 SDRAM

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Manufacturer	ELPIDA [Elpida Memory]

Direct Link	http://www.elpida.com/en

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EDJ1108BDBG

Data Sheet E1544E30 (Ver. 3.0)

7

Recommended DC Operating Conditions (TC = 0

°C to +85°C, VDD, VDDQ = 1.5V ± 0.075V)

Parameter

Symbol

min.

typ.

max.

Unit

Notes

Supply voltage

VDD

1.425

1.5

1.575

V

1, 2

Supply voltage for DQ

VDDQ

1.425

1.5

1.575

V

1, 2

Notes: 1. Under all conditions VDDQ must be less than or equal to VDD.

2. VDDQ tracks with VDD. AC parameters are measured with VDD and VDDQ tied together.

AC and DC Input Measurement Levels (TC = 0

°C to +85°C, VDD, VDDQ = 1.5V ± 0.075V)

Single-Ended AC and DC Input Levels for Command and Address

Parameter

Symbol

min.

typ.

max.

Unit

Notes

DC input logic high

VIHCA (DC100)

VREF

+ 0.100



VDD

V

1

DC input logic low

VILCA (DC100)

VSS



VREF

− 0.100

V

1

AC input logic high

VIHCA (AC175)

VREF

+ 0.175



*

2

V

1, 2

AC input logic low

VILCA (AC175)

*

2



VREF

− 0.175

V

1, 2

AC input logic high

VIHCA (AC150)

VREF

+ 0.150



*

2

V

1, 2

AC input logic low

VILCA (AC150)

*

2



VREF

− 0.150

V

1, 2

Input reference voltage

for address, command

inputs

VREFCA (DC)

0.49

× VDD



0.51

× VDD

V

3, 4

Notes: 1. For input only pins except /RESET; VREF = VREFCA (DC).

2. See Overshoot and Undershoot Specifications section.

3. The AC peak noise on VREF may not allow VREF to deviate from VREFCA (DC) by more than

±1% VDD

(for reference: approx.

±15 mV).

4. For reference: approx. VDD/2

± 15 mV.

Single-Ended AC and DC Input Levels for DQ and DM

Parameter

Symbol

min.

typ.

max.

Unit

Notes

DC input logic high

VIHDQ (DC100)

VREF

+ 0.100



VDD

V

1

DC input logic low

VILDQ (DC100)

VSS



VREF

− 0.100

V

1

VREF

+ 0.175



*

2

V

1, 2

AC input logic high

DDR3-1066

DDR3-1333, 1600

VIHDQ (AC175)



V

1, 2

AC input logic high

VIHDQ (AC150)

VREF

+ 0.150



*

2

1, 2

*

2



VREF

− 0.175

V

1, 2

AC input logic low

DDR3-1066

DDR3-1333, 1600

VILDQ (AC175)



V

1, 2

AC input logic low

VILDQ (AC150)

*

2



VREF

− 0.150

1, 2

Input reference

voltage for DQ, DM

inputs

VREFDQ (DC)

0.49

× VDD



0.51

× VDD

V

3, 4

Notes: 1. For DQ and DM: VREF = VREFDQ (DC).

2. See Overshoot and Undershoot Specifications section.

3. The AC peak noise on VREF may not allow VREF to deviate from VREFDQ (DC) by more than

±1% VDD

(for reference: approx.

±15 mV).

4. For reference: approx. VDD/2

± 15 mV.

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