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What is IS43TR81280B?

This electronic component, produced by the manufacturer "ISSI", performs the same function as "1Gb DDR3 SDRAM".


IS43TR81280B Datasheet PDF - ISSI

Part Number IS43TR81280B
Description 1Gb DDR3 SDRAM
Manufacturers ISSI 
Logo ISSI Logo 


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IS43/46TR16640B, IS43/46TR16640BL
IS43/46TR81280B, IS43/46TR81280BL
128MX8, 64MX16 1Gb DDR3 SDRAM
FEATURES
Standard Voltage: VDD and VDDQ = 1.5V ± 0.075V
Low Voltage (L): VDD and VDDQ = 1.35V + 0.1V, -0.067V
- Backward compatible to 1.5V
High speed data transfer rates with system
frequency up to 1066 MHz
8 internal banks for concurrent operation
8n-bit pre-fetch architecture
Programmable CAS Latency
Programmable Additive Latency: 0, CL-1,CL-2
Programmable CAS WRITE latency (CWL) based
on tCK
Programmable Burst Length: 4 and 8
Programmable Burst Sequence: Sequential or
Interleave
BL switch on the fly
Auto Self Refresh(ASR)
Self Refresh Temperature(SRT)
OPTIONS
Configuration:
128Mx8
64Mx16
Package:
96-ball FBGA (9mm x 13mm) for x16
78-ball FBGA (8mm x 10.5mm) for x8
NOVEMBER 2014
Refresh Interval:
7.8 us (8192 cycles/64 ms) Tc= -40°C to 85°C
3.9 us (8192 cycles/32 ms) Tc= 85°C to 105°C
Partial Array Self Refresh
Asynchronous RESET pin
TDQS (Termination Data Strobe) supported (x8
only)
OCD (Off-Chip Driver Impedance Adjustment)
Dynamic ODT (On-Die Termination)
Driver strength : RZQ/7, RZQ/6 (RZQ = 240 )
Write Leveling
Operating temperature:
Commercial (TC = 0°C to +95°C)
Industrial (TC = -40°C to +95°C)
Automotive, A1 (TC = -40°C to +95°C)
Automotive, A2 (TC = -40°C to +105°C)
ADDRESS TABLE
Parameter
Row Addressing
Column Addressing
Bank Addressing
Page size
Auto Precharge Addressing
BL switch on the fly
128Mx8
A0-A13
A0-A9
BA0-2
1KB
A10/AP
A12/BC#
64Mx16
A0-A12
A0-A9
BA0-2
2KB
A10/AP
A12/BC#
SPEED BIN
Speed Option
15G
125J
107M
093N
JEDEC Speed Grade
DDR3-1333G DDR3-1600J DDR3-1866M DDR3-2133N
CL-nRCD-nRP
8-8-8
10-10-10
13-13-13
14-14-14
tRCD,tRP(min)
12.0
12.5
13.91
13.09
Note: Faster speed options may be backward compatible to slower speed options. Refer to timing tables (8.3)
Units
tCK
ns
Copyright © 2014 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. C1
11/12/2014
1

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IS43TR81280B equivalent
IS43/46TR16640B, IS43/46TR16640BL
IS43/46TR81280B, IS43/46TR81280BL
2. FUNCTION DESCRIPTION
2.1 Simplified State Diagram
Power
applied
Power
On
Reset
Procedure
From
Any state RESET
Initialization
MRS,MPR,
Write
Leveling
ZQCL
ZQ
Calibration
ZQCL
ZQCS
Idle
SRE
SRX
REF
Self
Refresh
Refreshing
Write
Active
Power
Down
PDX
PDE
ACT
PDE
PDX
Activating
Precharge
Power
Down
Writing
Write
Bank
Active
Read
Write A Read A
Read
Write
Reading
Read
Write A
Writing
Write A Read A
PRE,PREA
PRE,PREA PRE,PREA
Read A
Reading
Abbreviation
ACT
PRE
PREA
MRS
REF
ZQCL
Function
Active
Precharge
Precharge All
Mode Register Set
Refresh
ZQ Calibration Long
Abbreviation
Read
Read A
Write
Write A
RESET
ZQCS
Precharging
Function
RD, RDS4, RDS8
RDA, RDAS4, RDAS8
WR, WRS4, WRS8
WRA, WRAS4, WRAS8
Start RESET Procedure
ZQ Calibration Short
Automatic
Sequence
Command
Sequence
Abbreviation
PDE
PDX
SRE
SRX
MPR
Function
Enter Power-down
Exit Power-down
Self-Refresh entry
Self-Refresh exit
Multi-Purpose Register
Integrated Silicon Solution, Inc. www.issi.com
Rev. C1
11/12/2014
5


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