IS42S32800B-7BLI ISSI, Integrated Silicon Solution Inc, IS42S32800B-7BLI Datasheet - Page 40

• Manufacturer Part Number: IS42S32800B-7BLI
• Description: IC SDRAM 256MBIT 143MHZ 90BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S32800B-7BLI

• Format - Memory: RAM
• Memory Type: SDRAM
• Memory Size: 256M (8Mx32)
• Speed: 143MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 90-BGA
• Organization: 8Mx32
• Density: 256Mb
• Address Bus: 14b
• Access Time (max): 5.5ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: BGA
• Operating Temp Range: -40C to 85C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 150mA
• Pin Count: 90
• Mounting: Surface Mount
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

IS42S32800B
40
Figure 12.3.Random Row Write (Interleaving Banks)
* t
BS0,1
CAS#
A0-A9
RAS#
DQM
WE#
CKE
CLK
CS#
WR
A10
DQ
High
Hi-Z
> t
Command
Activate
Bank A
(Burst Length=8,CAS#Latency=3)
RAx
RAx
WR
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
(min.)
t
CK3
t
RCD
Command
Bank A
Write
DAx0 DAx1 DAx2 DAx3 DAx4 DAx5 DAx6 DAx7 DBx0 DBx1
CAx
Command
Activate
Bank B
RBx
RBx
Command
Bank B
Write
CBx
t
WR*
Precharge
Command
Bank A
DBx2 DBx3 DBx4 DBx5 DBx6
t
RP
Command
Activate
Bank A
Integrated Silicon Solution, Inc.
RAy
RAy
DBx7
Command
Bank A
CAy
DAy0 DAy1 DAy2
Write
t
WR*
Precharge
Command
Bank B
DAy3
07/21/09
Rev. F