IS42S32800B-7BL INTEGRATED SILICON SOLUTION (ISSI), IS42S32800B-7BL Datasheet - Page 26

• Manufacturer Part Number: IS42S32800B-7BL
• Description: IC, SDRAM, 256MBIT, 143MHZ, BGA-90
• Manufacturer: INTEGRATED SILICON SOLUTION (ISSI)

Specifications of IS42S32800B-7BL

• Memory Type: DRAM - Sychronous
• Access Time: 7ns
• Page Size: 256Mbit
• Ic Interface Type: Parallel
• Memory Case Style: BGA
• No. Of Pins: 90
• Operating Temperature Range: 0°C To +70°C
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS42S32800B
26
Figure 3.Auto Refresh (CBR)(Burst Length=4,CAS#Latency=2)
A0-A9
BS0,1
RAS#
CAS#
CS#
WE#
CLK
CKE
DQM
A10
DQ
DQ
Precharge All
T0
Command
t
T1
CK2
t
RP
T2
Auto Refresh
Command
T3 T4 T5 T6 T7
t
RC
Auto Refresh
T8
Command
T9
T10
T11
t
T12
RC
T13
T14
Command
Activate
Bank A
RAx
RAx
T15 T16 T17 T18 T19
Command
Integrated Silicon Solution, Inc.
Bank A
Read
CAx
Ax0
Ax1
T20
Ax2
T21
Ax3
T22
07/21/09
Rev. F