MT49H64M9CHT-25:A Micron Technology Inc, MT49H64M9CHT-25:A Datasheet - Page 32

• Manufacturer Part Number: MT49H64M9CHT-25:A
• Manufacturer: Micron Technology Inc
• Type: RLDRAMr

Specifications of MT49H64M9CHT-25:A

• Organization: 64Mx9
• Address Bus: 25b
• Operating Supply Voltage (typ): 1.8V
• Package Type: FBGA
• Operating Temp Range: 0C to 95C
• Operating Supply Voltage (max): 1.9V
• Operating Supply Voltage (min): 1.7V
• Supply Current: 675mA
• Pin Count: 144
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

MODE REGISTER SET (MRS)
Figure 10:
PDF: 09005aef815b2df8/Source: 09005aef811ba111
576Mb_RLDRAM_II_SIO_Core2.fm - Rev. F 6/09 EN
Mode Register Set
The mode register set stores the data for controlling the operating modes of the memory.
It programs the RLDRAM configuration, burst length, test mode, and I/O options.
During an MRS command, the address inputs A0–A17 are sampled and stored in the
mode register. After issuing a valid MRS command,
command can be issued to the RLDRAM. This statement does not apply to the consecu-
tive MRS commands needed for internal logic reset during the initialization routine. The
MRS command can only be issued when all banks are idle and no bursts are in progress.
Note that if changing the burst length of the device, the data written by the prior burst
length is not guaranteed.
ADDRESS
ADDRESS
BANK
REF#
WE#
CK#
CS#
CK
576Mb: x9, x18 2.5V Vext, 1.8V Vdd, HSTL, SIO, RLDRAM II
OPCODE
DON’T CARE
32
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t
MRSC must be met before any
©2004 Micron Technology, Inc. All rights reserved.
Commands