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IS46TR85120A-125KBLA2 Datasheet(PDF) 8 Page - Integrated Silicon Solution, Inc

Part # IS46TR85120A-125KBLA2
Description  512Mx8, 256Mx16 4Gb DDR3 SDRAM
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Manufacturer  ISSI [Integrated Silicon Solution, Inc]
Direct Link  http://www.issi.com
Logo ISSI - Integrated Silicon Solution, Inc

IS46TR85120A-125KBLA2 Datasheet(HTML) 8 Page - Integrated Silicon Solution, Inc

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IS43/46TR16256A, IS43/46TR16256AL,
IS43/46TR85120A, IS43/46TR85120AL
Integrated Silicon Solution, Inc.
– www.issi.com –
8
Rev. G2
07/28/2016
10. Issue ZQCL command to starting ZQ calibration.
11. Wait for both tDLLK and tZQinit completed.
12. The DDR3 SDRAM is now ready for normal operation.
Figure2.1.1 Reset and Initialization Sequence at Power-on Ramping
Ta
CK,CK#
VDD,VDDQ
RESET#
CKE
CMMAND
BA
ODT
RTT
Tb
T=200µS
Tmin=10nS
T=500µS
tCKSRX
tIS
tIS
tIS
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Tc
Td
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tXPR
tMRD
tMRD
tMRD
tMOD
tZQinit
tDLLK
tIS
Valid
Valid
Valid
Valid
MRD
MRD
MRD
MRD
ZQCL
1)
MR2
MR3
MR1
MR0
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Te
Tf
Tg
Th
Ti
Tj
Tk
Note1. From time point “Td” until “Tk” NOP or DES commands must be
applied between MRS and ZQCL commands.
Time
Break
DON’T
CARE
Static LOW in case RTT_Nom is enabled at time Tg, otherwise static HIGH or LOW
1)


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