IS43DR81280B Datasheet, PDF (1/28 Pages) Integrated Silicon Solution, Inc – 1Gb (x8, x16) DDR2 SDRAM

IS43/46DR81280B/L, IS43/46DR16640B/L
1Gb (x8, x16) DDR2 SDRAM
FEATURES
 Clock frequency up to 400MHz
 8 internal banks for concurrent operation
 4‐bit prefetch architecture
 Programmable CAS Latency: 3, 4, 5, 6 and 7
 Programmable Additive Latency: 0, 1, 2, 3, 4, 5
and 6
 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 s (8192 cycles/64 ms)
 ODT (On‐Die Termination)
 Weak Strength Data‐Output Driver Option
OPTIONS
 Configuration:
 128Mx8 (16M x 8 x 8 banks)
 64Mx16 (8M x 16 x 8 banks)
 Package:
 60‐ball TW‐BGA for x8
 84‐ball TW‐BGA for x16
Clock Cycle Timing
Speed Grade
CL‐tRCD‐tRP
tCK (CL=3)
tCK (CL=4)
tCK (CL=5)
tCK (CL=6)
tCK (CL=7)
Frequency (max)
‐3D
DDR2‐667D
5‐5‐5
5
3.75
3
3
3
333
‐25E
DDR2‐800E
6‐6‐6
5
3.75
3
2.5
2.5
400
PRELMINARY INFORMATION
AUGUST 2012
 Bidirectional differential Data Strobe (Single‐
ended data‐strobe is an optional feature)
 On‐Chip DLL aligns DQ and DQs transitions with
CK transitions
 DQS# can be disabled for single‐ended data
strobe
 Read Data Strobe supported (x8 only)
 Differential clock inputs CK and CK#
 VDD and VDDQ = 1.8V ± 0.1V
 PASR (Partial Array Self Refresh)
 SSTL_18 interface
 tRAS lockout supported
 Operating temperature:
Commercial (T_A = 0°C to 70°C ; T_C = 0°C to 85°C)
Industrial (T_A = ‐40°C to 85°C; T_C = ‐40°C to 95°C)
Automotive, A1 (T_A = ‐40°C to 85°C; T_C = ‐40°C to 95°C)
Automotive, A2 (T_A = ‐40°C to 105°C; T_C = ‐40°C to
105°C)
ADDRESS TABLE
Parameter
Row Addressing
Column Addressing
Bank Addressing
Precharge Addressing
128Mx8
A0‐A13
A0‐A9
BA0‐BA2
A10
‐25D
DDR2‐800D
5‐5‐5
5
3.75
2.5
2.5
2.5
400
Units
tCK
ns
ns
ns
ns
ns
MHz
64Mx16
A0‐A12
A0‐A9
BA0‐BA2
A10
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 –
1
Rev. 0B, 08/08/2012