IS42S32400B-7BI ISSI, Integrated Silicon Solution Inc, IS42S32400B-7BI Datasheet - Page 22

• Manufacturer Part Number: IS42S32400B-7BI
• Description: IC SDRAM 128MBIT 143MHZ 90FBGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc

Specifications of IS42S32400B-7BI

• Format - Memory: RAM
• Memory Type: SDRAM
• Memory Size: 128M (4Mx32)
• Speed: 143MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 90-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IS42S32400B
SELF-REFRESH CYCLE
22
DQM0 - DQM3
COMMAND
A0-A9, A11
BA0, BA1
active banks
Precharge all
CKE
CLK
A10
DQ
High-Z
SINGLE BANK
t
t
ALL BANKS
CKS
CMS
PRECHARGE
t
AS
BANK
T0
t
t
CKH
t
CMH
AH
t
CK
refresh mode
NOP
t
RP
Enter self
T1
t
CH
t
t
CL
CKS
Integrated Silicon Solution, Inc. — www.issi.com —
Refresh
Auto
T2
CLK stable prior to exiting
self refresh mode
≥ t
RAS
(Restart refresh time base)
Exit self refresh mode
Tn+1
NOP
t
NOP
CKS
t
XSR
PRELIMINARY INFORMATION Rev. 00J
To+1
To+2
Refresh
Auto
DON'T CARE
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03/03/09