IS43/46DR86400B, IS43/46DR16320B

Integrated Silicon Solution, Inc. – www.issi.com –

1

Rev. I, 8/01/2012

512Mb (x8, x16) DDR2 SDRAM

AUGUST 2012

FEATURES

• Clock frequency up to 400MHz

• Posted CAS

• Programmable CAS Latency: 3, 4, 5 and 6

• Programmable Additive Latency: 0, 1, 2, 3, 4 and 5

• Write Latency = Read Latency-1

• Programmable Burst Sequence: Sequential or

Interleave

• Programmable Burst Length: 4 and 8

• Automatic and Controlled Precharge Command

• Power Down Mode

• Auto Refresh and Self Refresh

• Refresh Interval: 7.8 µs (8192 cycles/64 ms)

• OCD (Off-Chip Driver Impedance Adjustment)

• ODT (On-Die Termination)

• Weak Strength Data-Output Driver Option

• Bidirectional differential Data Strobe (Single-

ended data-strobe is an optional feature)

• On-Chip DLL aligns DQ and DQs transitions with

CK transitions

• Differential clock inputs CK and CK#

• VDD and VDDQ = 1.8V ± 0.1V

• PASR (Partial Array Self Refresh)

• SSTL_18 interface

• tRAS lockout supported

• Read Data Strobe supported (x8 only)

• Internal four bank operations with single pulsed

RAS

• Operating temperature:

+95°C)

to +105°C)

OPTIONS

• Configuration:

− 64Mx8 (16M x 8 x 4 banks)

− 32Mx16 (8M x 16 x 4 banks)

• Package:

− 60-ball TW-BGA for x8

− 84-ball TW-BGA for x16

ADDRESS TABLE

Parameter

64Mx8

32Mx16

Row Addressing

A0-A13

A0-A12

Column Addressing

A0-A9

A0-A9

Bank Addressing

BA0-BA1

BA0-BA1

Precharge Addressing

A10

A10

Clock Cycle Timing

-5B

-37C

-3D

-25E

-25D

Units

Speed Grade

DDR2-400B

DDR2-533C

DDR2-667D

DDR2-800E

DDR2-800D

CL-tRCD-tRP

3-3-3

4-4-4

5-5-5

6-6-6

5-5-5

tCK

tCK (CL=3)

5

5

5

5

5

ns

tCK (CL=4)

5

3.75

3.75

3.75

3.75

ns

tCK (CL=5)

5

3.75

3

3

2.5

ns

tCK (CL=6)

5

3.75

3

2.5

2.5

ns

Frequency (max)

200

266

333

400

400

MHz

Note: The -5B device specification is shown for reference only.

Copyright © 2012 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time

without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to

obtain the latest version of this device specification before relying on any published information and before placing orders for products.

Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can

reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such

applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:

a.) the risk of injury or damage has been minimized;

b.) the user assume all such risks; and

c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances