IS42S32800D-7BL ISSI, Integrated Silicon Solution Inc, IS42S32800D-7BL Datasheet - Page 43

• 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
Integrated Silicon Solution, Inc. — www.issi.com
Rev. 00B
11/21/07
Figure 14.2.Interleaving Column Read Cycle (Burst Length=4,CAS#Latency=2)
BS0,1
A 0-A9
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
CK2
t
RCD
Command
Bank A
CAy
Read
t
AC2
Command
Activate
Bank B
RAx
RAx
Ax0
Ax1
Command
Bank B
CBw
Read
Ax2
Ax3
Command
Bank B
Read
CBx
Bw0 Bw1 Bx0
Command
Bank B
CBy
Read
Bx1
Command
Bank A
CAy
Read
By0
By1
Command
Bank B
Read
CBz
Ay0
Precharge
Command
Bank A
Ay1
Bz0
Bz1
Precharge
Command
Bank B
Bz2
Bz3
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