IS42S32800B-7T ISSI, Integrated Silicon Solution Inc, IS42S32800B-7T Datasheet - Page 36

• Manufacturer Part Number: IS42S32800B-7T
• Description: IC SDRAM 256MBIT 143MHZ 86TSOP
• Manufacturer: ISSI, Integrated Silicon Solution Inc
• Type: SDRAMr

Specifications of IS42S32800B-7T

• 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: 86-TSOPII
• Organization: 8Mx32
• Density: 256Mb
• Address Bus: 14b
• Access Time (max): 5.5ns
• Maximum Clock Rate: 143MHz
• Operating Supply Voltage (typ): 3.3V
• Package Type: TSOP-II
• Operating Temp Range: 0C to 70C
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Supply Current: 150mA
• Pin Count: 86
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IS42S32800B
36
Figure 10.2.Random Column Write (Page within same Bank)
BS0,1
CAS#
A0-A9
RAS#
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
(Burst Length=4,CAS#Latency=2)
Command
Activate
Bank A
RBw
RBw
t
CK2
Command
Bank A
Write
DBw0
CBw
DBw1 DBw2 DBw3
Command
Bank B
Write
DBx0 DBx1 DBy0
CBx
Command
Bank B
Write
CBy
DBy1 DBy2 DBy3
Precharge
Command
Bank B
Command
Activate
Bank B
RBz
RBz
Integrated Silicon Solution, Inc.
Command
Bank B
DBz0 DBz1 DBz2 DBz3
CBz
Write
07/21/09
Rev. F