MC-4R256CPE6C-653 datasheet(9/16 Pages) ELPIDA

Teilenummer	MC-4R256CPE6C-653

Bauteilbeschribung	Direct Rambus??DRAM RIMM??Module 256M-BYTE (128M-WORD x 16-BIT)

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Hersteller	ELPIDA [Elpida Memory]

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Preliminary Data Sheet E0043N11

9

MC-4R256CPE6C

AC Electrical Specifications

Symbol

Parameter and Conditions

MIN.

TYP.

MAX.

Unit

Z

Module Impedance

25.2

28

30.8

Ω

TPD

Average clock delay from finger to finger of all RSL clock nets

-845

2.06

ns

(CTM, CTMN,CFM, and CFMN)

-745

2.06

-653

2.10

∆TPD

Propagation delay variation of RSL signals with respect to TPD

Note1,2

−24

+24

ps

∆TPD-CMOS Propagation delay variation of SCK and CMD signals with respect to

an average clock delay

Note1

−100

+100

ps

Vα/VIN

Attenuation Limit

-845

25

%

-745

25

-653

21

VXF/VIN

Forward crosstalk coefficient

-845

8

%

(300ps input rise time 20% - 80%)

-745

8

-653

8

VXB/VIN

Backward crosstalk coefficient

-845

2.5

%

(300ps input rise time 20% - 80%)

-745

2.5

-653

2.5

RDC

DC Resistance Limit

-845

1.2

Ω

-745

1.2

-653

1.2

Notes 1. TPD or Average clock delay is defined as the average delay from finger to finger of all RSL clock nets (CTM,

CTMN, CFM, and CFMN).

2. If the RIMM module meets the following specification, then it is compliant to the specification.

If the RIMM module does not meet these specifications, then the specification can be adjusted by the

“Adjusted

∆TPD Specification” table.

Adjusted

∆TPD Specification

Symbol

Parameter and conditions

Adjusted MIN./MAX.

Absolute

Unit

MIN.

MAX.

∆TPD

Propagation delay variation of RSL signals with respect to TPD

+/

− [24+(18*N*∆Z0)] Note

−50

+50

ps

Note

N = Number of RDRAM devices installed on the RIMM module.

∆Z0 = delta Z0% = (MAX. Z0 − MIN. Z0) / (MIN. Z0)

(MAX. Z0 and MIN. Z0 are obtained from the loaded (high impedance) impedance coupons of all RSL layers on

the module.)

Ähnliche Beschreibung - MC-4R256CPE6C-653

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Elpida Memory	MC-4R256FKE6D-840	490Kb / 14P	Direct Rambus DRAM RIMM Module 256M-BYTE (128M-WORD x 16-BIT)
NEC	MC-4R256CEE6B	129Kb / 16P	Direct Rambus DRAM RIMM Module 256M-BYTE 128M-WORD x 16-BIT
Elpida Memory	MC-4R256FKE6D	116Kb / 14P	Direct Rambus DRAM RIMM Module 256M-BYTE (128M-WORD x 16-BIT)
NEC	MC-4R256CPE6C	133Kb / 6P	Direct Rambus DRAM RIMM Module 256M-BYTE 128M-WORD x 16-BIT
Elpida Memory	MC-4R256FKE8D	116Kb / 14P	Direct Rambus DRAM RIMM Module 256M-BYTE (128M-WORD x 18-BIT)
	MC-4R256FKE8D-840	128Kb / 14P	Direct Rambus DRAM RIMM Module 256M-BYTE (128M-WORD x 18-BIT)
	MC-4R256FKE8S-840	124Kb / 14P	Direct Rambus DRAM SO-RIMM Module 256M-BYTE (128M-WORD x 18-BIT)
	MC-4R256FKE8S	126Kb / 14P	Direct Rambus DRAM SO-RIMM Module 256M-BYTE (128M-WORD x 18-BIT)
	MC-4R512FKE6D	132Kb / 14P	Direct Rambus DRAM RIMM Module 512M-BYTE (256M-WORD x 16-BIT)
NEC	MC-4R128CEE6B	129Kb / 16P	Direct Rambus DRAM RIMM Module 128M-BYTE 64M-WORD x 16-BIT

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