HMT112U7BFR8A datasheet(5/51 Pages) HYNIX

Part #	HMT112U7BFR8A

Description	240pin DDR3 SDRAM Registered DIMM

Download	51 Pages

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Manufacturer	HYNIX [Hynix Semiconductor]

Direct Link	http://www.skhynix.com/kor/main.do

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5 / 51 page

Rev. 0.1 / Nov. 2009

5

Pin Descriptions

Pin Name

Description

Pin Name

Description

A0–A15

SDRAM address bus

SCL

I2C serial bus clock for EEPROM

BA0–BA2

SDRAM bank select

SDA

I2C serial bus data line for EEPROM

RAS

SDRAM row address strobe

SA0–SA2

I2C slave address select for EEPROM

CAS

SDRAM column address strobe

VDD*

SDRAM core power supply

WE

SDRAM write enable

VDDQ*

SDRAM I/O Driver power supply

S0–S1

DIMM Rank Select Lines

VREFDQ

SDRAM I/O reference supply

CKE0–CKE1

SDRAM clock enable lines

VREFCA

SDRAM command/address reference

supply

ODT0–ODT1

On-die termination control lines

VSS

Power supply return (ground)

DQ0–DQ63

DIMM memory data bus

VDDSPD

Serial EEPROM positive power supply

CB0–CB7

DIMM ECC check bits

NC

Spare pins (no connect)

DQS0–DQS8

SDRAM data strobes

(positive line of differential pair)

TEST

Memory bus analysis tools

(unused on memory DIMMS)

DQS0–DQS8

SDRAM data strobes

(negative line of differential pair)

RESET

Set DRAMs to Known State

DM0–DM8

SDRAM data masks/high data strobes

(x8-based x72 DIMMs)

VTT

SDRAM I/O termination supply

CK0–CK1

SDRAM clocks

(positive line of differential pair)

RFU

Reserved for future use

CK0–CK1

SDRAM clocks

(negative line of differential pair)

-

*The VDD and VDDQ pins are tied common to a single power-plane on these designs

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HMT112U7BFR8A Datasheet(PDF) 5 Page - Hynix Semiconductor

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