
GS8161Z18(T/D)/GS8161Z32(D)/GS8161Z36(T/D)
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev:  2.15  11/2004
35/36
 1998, GSI Technology
18Mb Sync SRAM Data Sheet Revision History
DS/DateRev. Code: Old;
New
Types of Changes
Format or Content
Page;Revisions;Reason
GS18/36 1.00 9/
1999A;GS18/362.0012/
1999B
Content
 Converted from 0.25u 3.3V process to 0.18u 2.5V process. 
Master File Rev B
 Added x72 Pinout.
GS18/362.00 12/
1999BGS18/362.01 1/2000C
Format
 Added new GSI Logo
GS18/362.0 1/2000DGS18/
362.03 2/2000E
 Front page; Features - changed 2.5V I/O supply to 2.5V 
or3.3V I/O supply; Completeness
 Absolute Maximum Ratings; Changed VDDQ - Value: From: -
.05 to VDD : to : -.05 to 3.6; Completeness.
 Recommended Operating Conditions;Changed: I/O Supply 
Voltage- Max. from VDD to 3.6; Input High Voltage- Max. from 
VDD +0.3 to 3.6; Same page - took out Note 1;Completeness 
 Electrical Characteristics - Added second Output High Voltage 
line to table; completeness.
 Note: There was not a Rev 2.02 for the 8160Z or the 8161Z.
 Pin 14 removed from V
SS
 in pin description table.
 ADV changed to pin 85 in pin description table.
GS18/362.03 2/2000E; 
8161Z18_r2_04
Content
8161Z18_r2_04; 
8161Z18_r2_05
Content
 Changed the value of ZZ recovery in the AC Electrical Char-
acteristics table on page 18 from 20 ns to 100 ns
8161Z18_r2_05; 
8161Z18_r2_06
Content/Format
 Added 225 MHz speed bin
 Updated page 1 table, AC Characteristics table, and Operat-
ing Currents table
 Updated format to comply with Technical Publications stan-
dards
 Updated Capitance table—removed Input row and updated 
Output row to I/O
 Updated Features list on page 1
 Completely reworked table on page 1
 Updated Mode Pin Functions on page 12
 Added 3.3 V references to entire document
 Updated Operating Conditions table
 Updated JTAG Operating Conditions table
 Updated Boundary Scan Chain table
 Updated Opearting Currents table and added note
 Updated table on page 1; added power numbers
 Updated Pin Description table
 Updated DQ on page 21
 Updated DQ on page 23 
 Updated Operating Currrents table
 Updated table on page 1; updated power numbers
 Updated Recommended Operating Conditions table (added 
V
DDQ
 references)
8161Z18_r2_06; 
8161Z18_r2_07
Content
8161Z18_r2_07; 
8161Z18_r2_08
Content
8161Z18_r2_08; 
8161Z18_r2_09
Content