NT5CC64M16DP-BE View Datasheet(PDF) - Nanya Technology
Part Name
Description
MFG CO.
'NT5CC64M16DP-BE' PDF : 138 Pages View PDF
NT5CB128M8DN/NT5CB64M16DP
NT5CC128M8DN/NT5CC64M16DP
1Gb DDR3 D-die SDRAM
PRECHARGE Command
The PRECHARGE command is used to deactivate the open row in a particular bank or the open row in all banks. The
bank(s) will be available for a subsequent row activation a specified time (tRP) after the PRECHARGE command is issued,
except in the case of concurrent auto precharge, where a READ or WRITE command to a different bank is allowed as long
as it does not interrupt the data transfer in the current bank and does not violate any other timing parameters. Once a bank
has been precharged, it is in the idle state and must be activated prior to any READ or WRITE commands being issued to
that bank. A PRECHARGE command is allowed if there is no open row in that bank (idle bank) or if the previously open row
is already in the process of precharging. However, the precharge period will be determined by the last PRECHARGE
command issued to the bank.
READ Operation
Read Burst Operation
During a READ or WRITE command DDR3/L will support BC4 and BL8 on the fly using address A12 during the READ or
WRITE (AUTO PRECHARGE can be enabled or disabled).
A12=0, BC4 (BC4 = burst chop, tCCD=4)
A12=1, BL8
A12 will be used only for burst length control, not a column address.
Fig. 20: Read Burst Operation RL=5 (AL=0, CL=5, BL=8)
CK
CK
CMD
Address
T0
READ
Bank
Col n
DQS, DQS
DQ
T1
NOP
T2
T3
NOP
NOP
CL=5
RL = AL + CL
T4
T5
T6
T7
T8
T9
NOP
NOP
NOP
NOP
NOP
NOP
tRPRE
tRPST
Dout Dout
n
n +1
Dout
n +2
Dout
n +3
Dout
n +4
Dout
n +5
Dout Dout
n +6 n +7
T10
NOP
T145
NOP
Fig. 21: READ Burst Operation RL = 9 (AL=4, CL=5, BL=8)
CK
CK
CMD
Address
T0
READ
Bank
Col n
DQS, DQS
DQ
T1
NOP
T2
T3
NOP
NOP
AL = 4
T4
T5
NOP
NOP
RL = AL + CL
T6
T7
NOP
NOP
CL=5
T8
T9
T10
T145
NOP
NOP
NOP
NOP
tRPRE
Dout Dout
n
n +1
Dout
n +2
Dout
n +3
Dout
n +4
Dout
n +5
REV 1.2
May. 2011
CONSUMER DRAM
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All rights reserved
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
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