MT49H64M9CHT-25:A Micron Technology Inc, MT49H64M9CHT-25:A Datasheet - Page 43

• 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

Figure 18:
PDF: 09005aef815b2df8/Source: 09005aef811ba111
576Mb_RLDRAM_II_SIO_Core2.fm - Rev. F 6/09 EN
Power-Up/Initialization Flow Chart
Notes:
Step
1. The sequence of the eight AUTO REFRESH commands (with respect to the 1,024 NOP com-
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
mands) does not matter. As is required for any operation,
AUTO REFRESH command and a subsequent VALID command to the same bank.
Desired load mode register with A10–A17 LOW
Issue MRS command—A10–A17 must be LOW
Issue MRS command—A10–A17 must be LOW
Apply stable CK/CK# and DK/DK#
Issue AUTO REFRESH to bank 0
Issue AUTO REFRESH to bank 1
Issue AUTO REFRESH to bank 2
Issue AUTO REFRESH to bank 3
Issue AUTO REFRESH to bank 4
Issue AUTO REFRESH to bank 5
Issue AUTO REFRESH to bank 6
Issue AUTO REFRESH to bank 7
Wait 1,024 NOP commands 1
Assert NOP for
V
Wait at least 200µs
Apply V
DD,
Valid command
576Mb: x9, x18 2.5V Vext, 1.8V Vdd, HSTL, SIO, RLDRAM II
V
and V
DD
Q ramp
REF
EXT
and V
ramp
t
MRSC
TT
43
consecutive clock
MRS commands
simultaneously
can be applied
Voltage rails
must be on
cycles
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t
RC must be met between an
©2004 Micron Technology, Inc. All rights reserved.
Operations