MT48H32M16LFBF-75 IT:B Micron Technology Inc, MT48H32M16LFBF-75 IT:B Datasheet - Page 28

• Manufacturer Part Number: MT48H32M16LFBF-75 IT:B
• Manufacturer: Micron Technology Inc
• Type: SDRAMr

Specifications of MT48H32M16LFBF-75 IT:B

• Organization: 32Mx16
• Density: 512Mb
• Address Bus: 15b
• Access Time (max): 8/5.4ns
• Maximum Clock Rate: 133MHz
• Operating Supply Voltage (typ): 1.8V
• Package Type: VFBGA
• Operating Temp Range: -40C to 85C
• Operating Supply Voltage (max): 1.95V
• Operating Supply Voltage (min): 1.7V
• Supply Current: 90mA
• Pin Count: 54
• Mounting: Surface Mount
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Compliant

COMMAND INHIBIT
NO OPERATION (NOP)
LOAD MODE REGISTER (LMR)
ACTIVE
Figure 8: ACTIVE Command
PDF: 09005aef82ea3742
512mb_mobile_sdram_y47m.pdf – Rev. H 12/09 EN
The COMMAND INHIBIT function prevents new commands from being executed by
the device, regardless of whether the CLK signal is enabled. The device is effectively de-
selected. Operations already in progress are not affected.
The NO OPERATION (NOP) command is used to perform a NOP to the selected device
(CS# is LOW). This prevents unwanted commands from being registered during idle or
wait states. Operations already in progress are not affected.
The mode registers are loaded via inputs A[n:0] (where An is the most significant ad-
dress term), BA0, and BA1(see Mode Register (page 40)). The LOAD MODE REGISTER
command can only be issued when all banks are idle and a subsequent executable com-
mand cannot be issued until
The ACTIVE command is used to activate a row in a particular bank for a subsequent
access. The value on the BA0, BA1 inputs selects the bank, and the address provided
selects the row. This row remains active for accesses until a PRECHARGE command is
issued to that bank. A PRECHARGE command must be issued before opening a differ-
ent row in the same bank.
BA0, BA1
Address
RAS#
CAS#
WE#
CKE
CLK
CS#
HIGH
512Mb: 32 Meg x 16, 16 Meg x 32 Mobile SDRAM
Bank address
Row address
t
28
MRD is met.
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Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2007 Micron Technology, Inc. All rights reserved.
Commands