MT47H256M8HG-25:A Micron Technology Inc, MT47H256M8HG-25:A Datasheet - Page 123

• Manufacturer Part Number: MT47H256M8HG-25:A
• Manufacturer: Micron Technology Inc
• Type: DDR2 SDRAMr

Specifications of MT47H256M8HG-25:A

• Organization: 256Mx8
• Address Bus: 18b
• Access Time (max): 400ps
• Maximum Clock Rate: 800MHz
• Operating Supply Voltage (typ): 1.8V
• Package Type: FBGA
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 1.9V
• Operating Supply Voltage (min): 1.7V
• Supply Current: 190mA
• Pin Count: 60
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

Figure 75: REFRESH Command-to-Power-Down Entry
Figure 76: ACTIVATE Command-to-Power-Down Entry
PDF: 09005aef824f87b6
2gbddr2.pdf – Rev. F 12/10 EN
Note:
Note:
Command
Command
Address
1. The earliest precharge power-down entry may occur is at T2, which is 1 ×
1. The earliest active power-down entry may occur is at T2, which is 1 ×
CK#
CKE
CK#
CKE
CK
CK
REFRESH command. Precharge power-down entry occurs prior to
fied.
VATE command. Active power-down entry occurs prior to
Valid
Valid
T0
T0
REFRESH
VALID
ACT
T1
T1
123
1 t CK
1 x t CK
Power-down 1
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Power-down 1
entry
entry
NOP
NOP
T2
T2
2Gb: x4, x8, x16 DDR2 SDRAM
t CKE (MIN)
t CKE (MIN)
T3
T3
t
RCD (MIN) being satisfied.
Power-Down Mode
© 2006 Micron Technology, Inc. All rights reserved.
Don’t Care
Don’t Care
t
RFC (MIN) being satis-
t
CK after the ACTI-
t
CK after the