MT47H256M8EB-25E:C Micron Technology Inc, MT47H256M8EB-25E:C Datasheet - Page 9
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MT47H256M8EB-25E:C
Manufacturer Part Number
MT47H256M8EB-25E:C
Description
256MX8 DDR2 SDRAM PLASTIC GREEN FBGA 1.8V
Manufacturer
Micron Technology Inc
Series
-r
Datasheet
1.MT47H256M8EB-25EC.pdf
(134 pages)
Specifications of MT47H256M8EB-25E:C
Format - Memory
RAM
Memory Type
DDR2 SDRAM
Memory Size
2G (256M x 8)
Speed
2.5ns
Interface
Parallel
Voltage - Supply
1.7 V ~ 1.9 V
Operating Temperature
0°C ~ 85°C
Package / Case
60-TFBGA
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MT47H256M8EB-25E:C
Manufacturer:
ATT
Quantity:
400
Company:
Part Number:
MT47H256M8EB-25E:C
Manufacturer:
MICRON
Quantity:
12 208
Company:
Part Number:
MT47H256M8EB-25E:C
Manufacturer:
MICRON
Quantity:
12 208
Company:
Part Number:
MT47H256M8EB-25E:C
Manufacturer:
BGA
Quantity:
11 350
Company:
Part Number:
MT47H256M8EB-25E:C
Manufacturer:
Micron Technology Inc
Quantity:
10 000
Part Number:
MT47H256M8EB-25E:C
Manufacturer:
MICRON
Quantity:
20 000
State Diagram
Figure 2: Simplified State Diagram
PDF: 09005aef824f87b6
2gbddr2.pdf – Rev. E 06/10 EN
Setting
default
EMRS
MRS
OCD
Note:
WRITE
precharge
WRITE A
Writing
Writing
(E)MRS
with
auto
1. This diagram provides the basic command flow. It is not comprehensive and does not
identify all timing requirements or possible command restrictions such as multibank in-
teraction, power down, entry/exit, etc.
power-
Active
down
Automatic Sequence
Command Sequence
WRITE
PRE
Initialization
precharged
Precharging
sequence
PRE, PRE_A
Activating
all banks
active
Bank
Idle
ACT
9
READ
ACT = ACTIVATE
CKE_H = CKE HIGH, exit power-down or self refresh
CKE_L = CKE LOW, enter power-down
(E)MRS = (Extended) mode register set
PRE = PRECHARGE
PRE_A = PRECHARGE ALL
READ = READ
READ A = READ with auto precharge
REFRESH = REFRESH
SR = SELF REFRESH
WRITE = WRITE
WRITE A = WRITE with auto precharge
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Precharge
power-
down
precharge
Reading
READ A
Reading
with
auto
REFRESH
2Gb: x4, x8, x16 DDR2 SDRAM
refreshing
CKE_L
Self
READ
CKE_L
Refreshing
© 2006 Micron Technology, Inc. All rights reserved.
State Diagram