GS840E18AT-166 GSI TECHNOLOGY, GS840E18AT-166 Datasheet - Page 16

• 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

Absolute Maximum Ratings
(All voltages reference to V
Note:
Permanent damage to the device may occur if the Absolute Maximum Ratings are exceeded. Operation should be restricted to Recommended
Operating Conditions. Exposure to conditions exceeding the Absolute Maximum Ratings, for an extended period of time, may affect reliability of
this component.
Notes:
1.
2.
3.
4.
Rev: 1.12 10/2004
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Supply Voltage
I/O Supply Voltage
Input High Voltage
Input Low Voltage
Ambient Temperature (Commercial Range Versions)
Ambient Temperature (Industrial Range Versions)
Unless otherwise noted, all performance specifications quoted are evaluated for worst case at both 2.75 V ≤ V
(i.e., 2.5 V I/O) and 3.6 V ≤ V
This device features input buffers compatible with both 3.3 V and 2.5 V I/O drivers.
Most speed grades and configurations of this device are offered in both Commercial and Industrial Temperature ranges. The part number of
Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifications quoted are evaluated
for worst case in the temperature range marked on the device.
Input Under/overshoot voltage must be –2 V > Vi < V
Symbol
V
T
T
I
V
V
V
V
OUT
P
BIAS
DDQ
I
STG
DD
IN
CK
I/O
IN
D
Parameter
Voltage on V
Voltage in V
Voltage on Clock Input Pin
Voltage on I/O Pins
Voltage on Other Input Pins
Input Current on Any Pin
Output Current on Any I/O Pin
Package Power Dissipation
Storage Temperature
Temperature Under Bias
SS
DDQ
)
DDQ
≤ 3.135 V (i.e., 3.3 V I/O) and quoted at whichever condition is worst case.
DD
Pins
Pins
Description
Recommended Operating Conditions
DD
Symbol
+2 V with a pulse width not to exceed 20% tKC.
V
V
16/31
V
V
DDQ
T
T
DD
IH
IL
A
A
Min.
3.135
2.375
–0.3
–40
1.7
0
GS840E18/32/36AT/B-190/180/166/150/100
–0.5 to V
–0.5 to V
Typ.
3.3
2.5
25
25
—
—
DDQ
DD
–0.5 to V
–0.5 to 4.6
–55 to 125
–55 to 125
–0.5 to 6
+0.5 (≤ 4.6 V max.)
Value
+0.5 (≤ 4.6 V max.)
+/–20
+/–20
1.5
V
DD
Max.
DD
V
3.6
0.8
70
85
DD
+0.3
DDQ
Unit
© 1999, GSI Technology
≤ 2.375 V
°C
°C
V
V
V
V
Unit
mA
mA
o
o
W
V
V
V
V
V
Notes
C
C
1
2
2
3
3