IS43R32800B-5B-TR ISSI, Integrated Silicon Solution Inc, IS43R32800B-5B-TR Datasheet - Page 37

• Manufacturer Part Number: IS43R32800B-5B-TR
• Description: IC DDR SDRAM 256MBIT 144BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc

Specifications of IS43R32800B-5B-TR

• Format - Memory: RAM
• Memory Type: DDR SDRAM
• Memory Size: 256M (8Mx32)
• Speed: 200MHz
• Interface: Parallel
• Voltage - Supply: 2.4 V ~ 2.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IS43R32800B
Integrated Silicon Solution, Inc. — www.issi.com
Rev. 00D
03/19/08
D M C ONTROL
P ower DOWN
DM is defined as the data mask for writes. During writes,D M masks inputdata word by word. D M
to write mask latency is 0.
The purpo se of CL K s uspend is power down. CK E i s synchronous input except during the self-
refresh mode. A c ommand at cycle is ignored. F rom CKE =H to normal function, D LL recovery time
is NOT required in the condition of the stable CLK operation during the power down mode.
Command
Command
Command
/CLK
DQS
CL K
DM
DQ
/CLK
CK E
CK E
CL K
WR IT E
PR E
AC T
masked by DM=H
D0 D1
NOP
NOP
D3 D4
Power D own by C KE
DM F unction(B L=8, CL=2 )
Standby Power Down
D5 D6
Active Power Down
D7
RE AD
NOP
NOP
Don't Care
Va lid
Va lid
Q0
Q1
tX PNR /tXPR D
Q2
Q3
Q4
Q5
Q6
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