97ULP844AH

97ULP844AH Datasheet


ICS97U877<br>• Ideal for DDR2 400, 533 and 667

Part Datasheet
97ULP844AH 97ULP844AH 97ULP844AH (pdf)
Related Parts Information
97ULP844AHT 97ULP844AHT 97ULP844AHT
PDF Datasheet Preview
Integrated Circuit Systems, Inc.

ICSSSTUA32864B
25-Bit Configurable Registered Buffer for DDR2

Recommended Application
• DDR2 Memory Modules
• Provides complete DDR DIMM solution with

ICS97U877
• Ideal for DDR2 400, 533 and 667

Product Features
• 25-bit 1:1 or 14-bit 1:2 configurable registered buffer
• Supports SSTL_18 JEDEC specification on data
inputs and outputs
• Supports LVCMOS switching levels on C0, C1 and

RESET# inputs
• Low voltage operation

VDD = 1.7V to 1.9V
• Available in 96 BGA package
• Drop-in replacement for ICSSSTUA32866
• Green packages available

Truth Table

I nputs

Outp uts

RST# DCS# CSR# CK

Dn, CK# DODT, Qn

DCK E

QCS#

QODT, QCKE

L or H L or H

L or H L or H

L or H L or H

L or H L or H

Floating

Pin Configuration
123456 A B C D E F G H J K L M N P R T
96 Ball BGA Top View

Ball Assignments

A DCKE B D2 C D3 D DODT E D5 F D6 G NC H CK J CK# K D8 L D9 M D10 N D11 P D12 R D13 T D14

NC D15 D16 NC D17 D18 RST# DCS# CSR# D19 D20 D21 D22 D23 D24 D25

V REF GND VDD GND VDD GND VDD GND VDD GND VDD GND VDD GND VDD V REF

VDD GND VDD GND VDD GND VDD GND VDD GND VDD GND VDD GND VDD

QCKE NC

QODT NC

QCS# NC

ZOH ZOL
1:1 Register C0 = 0, C1 = 0

ICSSSTUA32864B

Ball Assignments

A DCKE NC

V REF GND

VDD GND

QCKEA QCKEB
Ordering Information

ICSSSTUA32864Bz LF T

Example:

ICS XXXX y z LF - T

Designation for tape and reel packaging Lead Free Optional Package Type
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Datasheet ID: 97ULP844AH 637235