IS42S32800D-7BI-TR ISSI, Integrated Silicon Solution Inc, IS42S32800D-7BI-TR Datasheet - Page 42

• Manufacturer Part Number: IS42S32800D-7BI-TR
• Description: IC SDRAM 256MBIT 143MHZ 90BGA
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S32800D-7BI-TR

• 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: 13b
• Access Time (max): 6.5/5.4ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• 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: Contains lead / RoHS non-compliant

IS42S32800D
42
Figure 13.3.Read and Write Cycle (Burst Length=4,CAS#Latency=3)
A 0-A9
BS0,1
RAS#
CAS#
DQM
WE#
CKE
CLK
CS#
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
Command
Bank A
Read
CAx
Ax0
Ax1 Ax2
Ax3
Integrated Silicon Solution, Inc. — www.issi.com
Command
Bank A
Write
DAy0 DAy1
CAy
is Masked with a
The Write Data
Zero Clock
Latency
DAy3
Command
CAz
Bank A
Read
Az0
is Masked with a
Az1
The Read Data
Two Clock
Latency
Rev. 00B
Az3
11/21/07