IS42S32800D-7BL ISSI, Integrated Silicon Solution Inc, IS42S32800D-7BL Datasheet - Page 26

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

Specifications of IS42S32800D-7BL

• Format - Memory: RAM
• Memory Type: SDRAM
• Memory Size: 256M (8Mx32)
• Speed: 143MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°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: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 150mA
• Pin Count: 90
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 706-1083; IS42S32800D-7BL

IS42S32800D
26
Figure 3.Auto Refresh (CBR)(Burst Length=4,CAS#Latency=2)
BS0,1
A0-A9
RAS#
CAS#
CS#
WE#
CKE
CLK
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
Integrated Silicon Solution, Inc. — www.issi.com
T11
t
T12
RC
T13
T14
Command
Activate
Bank A
RAx
RAx
T15 T16 T17 T18 T19
Command
Bank A
Read
CAx
Ax0
Ax1
T20
Ax2
T21
Ax3
Rev. 00B
11/21/07
T22