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GS78108AB Schematic ( PDF Datasheet ) - GSI Technology

Teilenummer GS78108AB
Beschreibung 1M x 8 8Mb Asynchronous SRAM
Hersteller GSI Technology
Logo GSI Technology Logo 




Gesamt 11 Seiten
GS78108AB Datasheet, Funktion
www.DataSheet4U.com
GS78108AB
BGA
Commercial Temp
Industrial Temp
1M x 8
8Mb Asynchronous SRAM
8, 10, 12 ns
3.3 V VDD
Features
• Fast access time: 8, 10, 12 ns
• CMOS low power operation: 240/190/170 mA at minimum
cycle time
• Single 3.3 V ± 0.3 V power supply
• All inputs and outputs are TTL-compatible
• Fully static operation
• Industrial Temperature Option: –40° to 85°C
• 14 mm x 22 mm, 119-bump, 1.27 mm Pitch Ball Grid Array
package
• RoHS-compliant package available
Symbol
A0 to A19
DQ1 to DQ8
CE
WE
OE
VDD
Description
The GS78108A is a high speed CMOS Static RAM organized
as 1,048,576-words by 8-bits. Static design eliminates the need
for external clocks or timing strobes. The GS78108operates on
a single 3.3 V power supply, and all inputs and outputs are
TTL-compatible. The GS7810A8 is available in a
14 mm x 22 mm BGA package.
Block Diagram
VSS
NC
Pin Descriptions
Description
Address input
Data input/output
Chip enable input
Write enable input
Output enable input
+3.3 V power supply
Ground
No connect
A0 Row
Decoder
Address
Input
Buffer
A19
CE
WE
OE
Control
Memory Array
Column
Decoder
I/O Buffer
DQ1 DQ8
Rev: 1.04 5/2006
1/11
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2003, GSI Technology






GS78108AB Datasheet, Funktion
www.DataSheet4U.com
Address
Data Out
Read Cycle 1:CE = OE = VIL
tRC
tOH
Previous Data
tAA
Data valid
GS78108AB
* These parameters are sampled and are not 100% tested
Write Cycle
Parameter
Write cycle time
Address valid to end of write
Chip enable to end of write
Data set up time
Data hold time
Write pulse width
Address set up time
Write recovery time (WE)
Write recovery time (CE)
Output Low Z from end of write
Write to output in High Z
Symbol
tWC
tAW
tCW
tDW
tDH
tWP
tAS
tWR
tWR1
tWLZ*
tWHZ*
-8
Min Max
8—
5.5 —
5.5 —
4—
0—
5.5 —
0—
0—
0—
3—
— 3.5
-10
Min Max
10 —
7—
7—
5—
0—
7—
0—
0—
0—
3—
—4
-12
Min Max
12 —
8—
8—
6—
0—
8—
0—
0—
0—
3—
—5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Rev: 1.04 5/2006
6/11
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2003, GSI Technology

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