IS43/46DR86400B, IS43/46DR16320B
AUGUST 2012
512Mb (x8, x16) DDR2 SDRAM
FEATURES
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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 (Singleended data-strobe is an optional feature)
OPTIONS
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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:
Commercial (TA = 0°C to +70°C ; TC = 0°C to +85°C)
Industrial (TA = -40°C to +85°C; TC = -40°C to +95°C)
Automotive, A1 (TA = -40°C to +85°C; TC = -40°C to
+95°C)
Automotive, A2 (TA = -40°C to +105°C; TC = -40°C
to +105°C)
ADDRESS TABLE
• 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
Parameter
Row Addressing
Column Addressing
Bank Addressing
Precharge Addressing
64Mx8
A0-A13
A0-A9
BA0-BA1
A10
32Mx16
A0-A12
A0-A9
BA0-BA1
A10
Clock Cycle Timing
-5B
Speed Grade
CL-tRCD-tRP
tCK (CL=3)
tCK (CL=4)
tCK (CL=5)
tCK (CL=6)
Frequency (max)
-37C
-3D
-25E
-25D
Units
DDR2-400B
3-3-3
5
5
5
5
200
DDR2-533C
4-4-4
5
3.75
3.75
3.75
266
DDR2-667D
5-5-5
5
3.75
3
3
333
DDR2-800E
6-6-6
5
3.75
3
2.5
400
DDR2-800D
5-5-5
5
3.75
2.5
2.5
400
tCK
ns
ns
ns
ns
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
Integrated Silicon Solution, Inc. – www.issi.com –
Rev. I, 8/01/2012
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