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NT5TU32M16EG-ACH Datasheet(PDF) 12 Page - Nanya Technology Corporation.

Part # NT5TU32M16EG-ACH
Description  Commercial, Industrial and Automotive DDR2 512Mb SDRAM
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Manufacturer  NANYA [Nanya Technology Corporation.]
Direct Link  http://www.nanya.com
Logo NANYA - Nanya Technology Corporation.

NT5TU32M16EG-ACH Datasheet(HTML) 12 Page - Nanya Technology Corporation.

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DDR2 512Mb SDRAM
NT5TU64M8EE / NT5TU32M16EG
12
Version 1.6
Nanya Technology Corp.©
08/2015
All Rights Reserved
3. For the minimum of 200us after stable power (VDD, VDDL, VDDQ, VREF, and VTT are between their minimum and
maximum values as stated in Re-commanded DC operating conditions table, and stable clock, then apply NOP or
Deselect & take CKE HIGH.
4. Wait minimum of 400 ns then issue precharge all command. NOP or Deselect applied during 400 ns period.
5. Issue an EMRS command to EMR(2). (To issue EMRS command to EMR(2), provide LOW to BA0 and BA1,HIGH to
BA1.)
6. Issue an EMRS command to EMR(3). (To issue EMRS command to EMR(3), provide LOW to BA1, HIGH to BA0 and
BA1.)
7. Issue EMRS to enable DLL. (To issue DLL Enable command, provide LOW to A0, HIGH to BA0 and LOW to BA1-BA1
and A12-A13. And A9=A8=A7=LOW must be used when issuing this command.)
8. Issue a Mode Register Set command for DLL reset.(To issue DLL Reset command, provide HIGH to A8 and LOW to
BA0-BA1.)
9. Issue a precharge all command.
10. Issue 2 more auto-refresh commands.
11. Issue a MRS command with LOW to A8 to initialize device operation (i.e. to program operating parameters without
resetting the DLL.)
12. At least 200 clocks after step 7, execute OCD Calibration (Off Chip Driver impedance adjustment). If OCD calibration
is not used, EMRs to EMR (1) to set OCD Calibration Default (A9=A8=A7=HIGH) followed by EMRS to EMR (1) to
exit OCD Calibration Mode (A9=A8=A7=LOW) must be issued with other operating parameters of EMR(1).
13. The DDR2 DRAM is now ready for normal operation.
* To guarantee ODT off, VREF must be valid and a low level must be applied to the ODT pin.
Example:
CK, CK
1st Auto
refresh
MRS
PRE
ALL
EMRS
CMD
2nd Auto
refresh
tRP
tRP
tRFC
tRFC
Extended Mode
Register Set
with DLL enable
Mode Register Set
with DLL reset
PRE
ALL
tMRD
tMRD
min. 200 cycles to
lock the DLL
CKE
Command
400 ns
MRS
NOP
tMRD
EMRS
Follow OCD
flowchart
ODT "low"
Follow OCD
flowchart
EMRS


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