GS74117AX
FP-BGA
Commercial Temp
Industrial Temp
Features
• Fast access time: 8, 10, 12 ns
• CMOS low power operation: 130/105/95 mA at minimum
cycle time
• Single 3.3 V power supply
• All inputs and outputs are TTL-compatible
• Byte control
• Fully static operation
• Industrial Temperature Option: –40° to 85°C
• Package:
X: 6 mm x 10 mm Fine Pitch Ball Grid Array package
GX: Pb-Free 6 mm x 10 mm Fine Pitch Ball Grid Array
package
256K x 16
4Mb Asynchronous SRAM
1
2
3
4
8, 10, 12 ns
3.3 V V
DD
Center V
DD
and V
SS
Fine Pitch BGA 256K x 16 Bump Configuration
5
6
A
B
C
D
E
F
G
H
LB
DQ
1
DQ
3
V
SS
V
DD
DQ
6
DQ
8
NC
OE
UB
DQ
2
DQ
4
DQ
5
DQ
7
NC
A
12
A
0
A
3
A
5
A
17
NC
A
8
A
10
A
13
A
1
A
4
A
6
A
7
A
16
A
9
A
11
A
14
A
2
CE
NC
DQ
16
DQ
15
DQ
14
DQ
13
DQ
12
V
DD
V
SS
Description
The GS74117A is a high speed CMOS Static RAM organized
as 262,144 words by 16 bits. Static design eliminates the need
for external clocks or timing strobes. The GS operates on a
single 3.3 V power supply and all inputs and outputs are TTL-
compatible. The GS74117A is available in a 6 x 10 mm Fine
Pitch BGA package.
DQ
10
DQ
11
WE
A
15
DQ
9
NC
Package X
6 x 10 mm Substrate
Top View
Pin Descriptions
Symbol
A
0
–A
17
DQ
1
–DQ
16
CE
LB
UB
WE
OE
V
DD
V
SS
NC
Description
Address input
Data input/output
Chip enable input
Lower byte enable input
(DQ1 to DQ8)
Upper byte enable input
(DQ9 to DQ16)
Write enable input
Output enable input
+3.3 V power supply
Ground
No connect
Rev: 1.05b 6/2010
1/12
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS74117AX
Block Diagram
A
0
Address
Input
Buffer
Row
Decoder
Memory Array
A
17
CE
WE
Control
OE
UB
_____
Column
Decoder
I/O Buffer
DQ
1
DQ
16
Truth Table
CE
H
OE
X
WE
X
LB
X
L
UB
X
L
H
L
L
H
L
X
H
DQ
1
to DQ
8
Not Selected
Read
Read
High Z
Write
Write
Not Write, High Z
High Z
High Z
DQ
9
to DQ
16
Not Selected
Read
High Z
Read
Write
Not Write, High Z
Write
High Z
High Z
V
DD
Current
ISB
1
, ISB
2
L
L
H
L
H
L
L
X
L
L
H
I
DD
L
L
X: “H” or “L”
H
X
H
X
X
H
Rev: 1.05b 6/2010
2/12
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS74117AX
Absolute Maximum Ratings
Parameter
Supply Voltage
Input Voltage
Output Voltage
Allowable power dissipation
Storage temperature
Symbol
V
DD
V
IN
V
OUT
PD
T
STG
Rating
–0.5 to +4.6
–0.5 to V
DD
+0.5
(≤ 4.6 V max.)
–0.5 to V
DD
+0.5
(≤ 4.6 V max.)
0.7
–55 to 150
Unit
V
V
V
W
o
C
Note:
Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation shall be restricted to Recommended
Operating Conditions. Exposure to higher than recommended voltages for extended periods of time could affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage for -8/-10/-12
Input High Voltage
Input Low Voltage
Ambient Temperature,
Commercial Range
Ambient Temperature,
Industrial Range
Symbol
V
DD
V
IH
V
IL
T
Ac
T
A
I
Min
3.0
2.0
–0.3
0
–40
Typ
3.3
—
—
—
—
Max
3.6
V
DD
+0.3
0.8
70
85
Unit
V
V
V
o
C
C
o
Notes:
1. Input overshoot voltage should be less than V
DD
+2 V and not exceed 20 ns.
2. Input undershoot voltage should be greater than –2 V and not exceed 20 ns.
Rev: 1.05b 6/2010
3/12
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS74117AX
Capacitance
Parameter
Input Capacitance
Output Capacitance
Symbol
C
IN
C
OUT
Test Condition
V
IN
= 0 V
V
OUT
= 0 V
Max
5
7
Unit
pF
pF
Notes:
1. Tested at T
A
= 25°C, f = 1 MHz
2. These parameters are sampled and are not 100% tested.
DC I/O Pin Characteristics
Parameter
Input Leakage
Current
Output Leakage
Current
Output High Voltage
Output Low Voltage
Symbol
I
IL
I
LO
V
OH
V
OL
Test Conditions
V
IN
= 0 to V
DD
Output High Z
V
OUT
= 0 to V
DD
I
OH
= –4 mA
I
LO
= +4 mA
Min
– 1 uA
–1 uA
2.4
—
Max
1 uA
1 uA
—
0.4 V
Power Supply Currents
Parameter
Symbol
Test Conditions
CE
≤
V
IL
All other inputs
≥
V
IH
or
≤
V
IL
Min. cycle time
I
OUT
= 0 mA
CE
≥
V
IH
All other inputs
≥
V
IH
or
≤V
IL
Min. cycle time
CE
≥
V
DD
– 0.2 V
All other inputs
≥
V
DD
– 0.2 V or
≤
0.2 V
0 to 70°C
8 ns
10 ns
12 ns
8 ns
–40 to 85°C
10 ns
12 ns
Unit
Operating
Supply
Current
I
DD
130
105
90
140
115
100
mA
Standby
Current
I
SB1
30
25
22
40
35
32
mA
Standby
Current
I
SB2
10
20
mA
Rev: 1.05b 6/2010
4/12
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS74117AX
AC Test Conditions
Parameter
Input high level
Input low level
Input rise time
Input fall time
Input reference level
Output reference level
Output load
Conditions
V
IH
= 2.4 V
V
IL
= 0.4 V
tr = 1 V/ns
tf = 1 V/ns
1.4 V
1.4 V
Fig. 1& 2
Output Load 1
DQ
50Ω
VT = 1.4 V
30pF
1
Output Load 2
3.3 V
DQ
5pF
1
589Ω
434Ω
Notes:
1. Include scope and jig capacitance.
2. Test conditions as specified with output loading as shown in
Fig. 1
unless otherwise noted.
3. Output load 2 for t
LZ
, t
HZ
, t
OLZ
and t
OHZ
Rev: 1.05b 6/2010
5/12
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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