IS42S32800B-7TL INTEGRATED SILICON SOLUTION (ISSI), IS42S32800B-7TL Datasheet - Page 46

• Manufacturer Part Number: IS42S32800B-7TL
• Description: IC, SDRAM, 256MBIT, 143MHZ, TSOP-86
• Manufacturer: INTEGRATED SILICON SOLUTION (ISSI)

Specifications of IS42S32800B-7TL

• Memory Type: DRAM - Sychronous
• Access Time: 7ns
• Page Size: 256Mbit
• Memory Case Style: TSOP
• No. Of Pins: 86
• Operating Temperature Range: -40°C To +85°C
• Frequency: 143MHz
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS42S32800B
46
Figure 15.3.Interleaved Column Write Cycle (Burst Length=4,CAS#Latency=3)
BS0,1
A 0-A9
RAS#
CAS#
DQM
CKE
CS#
WE#
CLK
A10
DQ
Hi-Z
T0 T 1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T 11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
Command
Activate
Bank A
RAx
RAx
t
CK3
t
RRD
t
RCD
> t
RRD(min)
Command
Bank A
Write
DAx0 DAx1 DAx2 DAx3
CAx RBw
Command
Activate
Bank B
RBw
Command
Bank B
DBw0 DBw1 DBx0 DBx1
CBw
Write
Command
Bank B
Write
CBx
Command
Bank B
Write
DBy0
CBy
DBy1 DAy0
Command
Bank A
Write
CAy
DAy1
Command
Bank B
t
DBz0 DBz1 DBz2 DBz3
Write
CBz
WR
Precharge
Integrated Silicon Solution, Inc.
Command
Bank A
t
RP
t
WR(min)
Precharge
Command
Bank B
07/21/09
Rev. F