HYS72T256040HP-3S-A datasheet(11/49 Pages) QIMONDA

Part #	HYS72T256040HP-3S-A

Description	240-Pin Registered DDR2 SDRAM Modules

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Manufacturer	QIMONDA [Qimonda AG]

Direct Link	http://www.qimonda.com

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Internet Data Sheet

Rev. 1.02, 2007-07

11

03292006-08VU-L8WK

HYS72T[64/128/256]xx0HP–[3S/3.7]–A

Registered DDR2 SDRAM Modules

233

DQS16

I/O

SSTL

Data Strobes 17:0

164

DQS17

I/O

SSTL

165

DQS17

I/O

SSTL

Data Mask

125

DM0

I

SSTL

Data Masks 8:0

The data write masks, associated with one data byte. In Write mode,

DM operates as a byte mask by allowing input data to be written if it is

LOW but blocks the write operation if it is HIGH. In Read mode, DM

lines have no effect.

Note:

×8 based module

134

DM1

I

SSTL

146

DM2

I

SSTL

155

DM3

I

SSTL

202

DM4

I

SSTL

211

DM5

I

SSTL

223

DM6

I

SSTL

232

DM7

I

SSTL

164

DM8

I

SSTL

EEPROM

120

SCL

I

CMOS

Serial Bus Clock

This signal is used to clock data into and out of the SPD EEPROM.

119

SDA

I/O

OD

Serial Bus Data

This is a bidirectional pin used to transfer data into or out of the SPD

EEPROM. A resistor must be connected from SDA to

V

DDSPD on the

motherboard to act as a pull-up.

239

SA0

I

CMOS

Serial Address Select Bus 2:0

These signals are tied at the system planar to either

V

SS or VDDSPD to

configure the serial SPD EEPROM address range

240

SA1

I

CMOS

101

SA2

I

CMOS

Parity

55

ERR_OUT

OCMOS

Parity bits

Note: Only for modules with parity bit for address and control bus. Not

connected on non-parity registered modules.

68

PAR_IN

I

CMOS

Power Supplies

1

V

REF

AI

—

I/O Reference Voltage

Reference voltage for the SSTL-18 inputs.

238

V

DDSPD

PWR

—

EEPROM Power Supply

Serial EEPROM positive power supply, wired to a separated power pin

at the connector which supports from 1.7 Volt to 3.6 Volt.

51, 56, 62, 72, 75,

78, 170, 175, 181,

191, 194

V

DDQ

PWR

—

I/O Driver Power Supply

Power and ground for the DDR SDRAM

53, 59, 64, 67, 69,

172, 178, 184, 187,

189, 197

V

DD

PWR

—

Power Supply

Power and ground for the DDR SDRAM

Pin No.

Name

Type

Buffer

Type

Function

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