GS840E18AT-166 GSI TECHNOLOGY, GS840E18AT-166 Datasheet - Page 30

• Manufacturer Part Number: GS840E18AT-166
• Description: SRAM Chip Sync Dual 3.3V 4M-Bit 256K x 18 8.5ns/3.5ns 100-Pin TQFP Tray
• Manufacturer: GSI TECHNOLOGY

Specifications of GS840E18AT-166

• Package: 100TQFP
• Timing Type: Synchronous
• Density: 4 Mb
• Data Rate Architecture: SDR
• Typical Operating Supply Voltage: 3.3 V
• Number Of I/o Lines: 18 Bit
• Number Of Ports: 2
• Number Of Words: 256K

4Mb Burst SRAM Revision History
Rev: 1.12 10/2004
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
840E18A_r1_05; 840E18A_r1_06
840E18A_r1_06; 840E18A_r1_07
840E18A_r1_07, 840E18A_r1_08
840E18A_r1_08, 840E18A_r1_09
840E18A_r1_09, 840E18A_r1_10
GS840E18/32/36 2.00 8/1999D
GS840E18/32/362.032/2000G;
GS840E18/32/36 Rev 1.02c 5/
840E18_r1_04; 840E18_r1_05
1999;GS840E18/32/362.01 9/
1999;GS840E18/32/362.032/
1999E;GS840E18/32/362.02
GS840E18/32/362.0210-11/
GS840E18/32/362.00 8/
GS840E18/32/362.01 9/
Rev. Code: Old;
840E18_r1_04
2000G
1999E
1999;
New
Format or Content
Types of Changes
Content/Format
Content/Format
Format/Typos
Format/Typos
Content
Content
Content
Content
Content
Content
Content
Format
30/31
• Document/Continued changing to new format.
• Added Fine Pitch BGA Package.
• Took “E” out of 840HE...in Core and Interface Voltages.
• Pin outs/New small caps format.
• Timing Diagrams/New format.
• Block Diagrams/New small caps format.
• Pin outs/x32 & x36 TQFP/Changed pin 72 from DQA3 to
• Pin Description/Rearranged Address Inputs to match order on
• TQFP Package Diagram/Corrected Dimension D Max from
• Took out Fine Pitch BGA Package. Package change in
• New GSI Logo
• Took “Pin” out of heading for consistency.
• Updated pin description table
• Updated BGA pin description table to meet JEDEC standard
• Added “non-A” speed bins to Operating Currents table, AC
• Updated format to fit Technical Documentation standards
• Updated table on page 1
• Updated Operating Currents table on page 18
• Updated Electrical Characteristics table on page 19
• Updated format to comply with present Technical
• Corrected typos in revision history table on page 31
• Reduced I
• Removed 200 MHz references from entire datasheet
• Updated format
• Added 190 MHz speed bin
Page /Revisions;Reason
DQB3.
TQFP Pinout.
20.1 to 22.1.
progress.
Electrical Characteristics table, and Ordering Information
table
Documentation standards
Currents table
DD
GS840E18/32/36AT/B-190/180/166/150/100
by 20 mA in table on page 1 and Operating
© 1999, GSI Technology