GSI TECHNOLOGY GS70328SJ-7, GS70328SJ-8, GS70328SJ-10, GS70328SJ-12, GS70328SJ-15 Service Manual
...
GS70328SJ/TS
SOJ, TSOP
32K x 8
Commercial Temp
Industrial Temp
256Kb Asynchronous SRAM
Features
• Fast access time: 7, 8, 10, 12, 15 ns
• 75/65/50/50/50 mA at max cycle rate
• 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
• Package line up
SJ: 300 mil, 28-pin SOJ package
TS: 8 mm x 13.4 mm, 28-pin TSOP Type I package
Description
The GS70328 is a high speed CMOS static RAM organized as
32,763 words by 8 bits. Static design eliminates the need for
external clocks or timing strobes. The GS70328 operates on a
single 3.3 V power supply, and all inputs and outputs are TTLcompatible. The GS70328 is available in 300 mil, 28-pin SOJ
and 8 x 13.4 mm
2
, 28-pin TSOP Type-I packages.
Pin Descriptions
Symbol Description
A0–A14 Address input
DQ
1–DQ8 Data input/output
CE
WE
OE
V
DD
V
SS
NC No connect
7, 8, 10, 12, 15 ns
3.3 V V
Corner VDD and V
Chip enable input
Write enable input
Output enable input
+3.3 V power supply
Ground
DD
SS
DQ1
DQ2
DQ3
V
SS
A
A12
A7
A6
A5
A4
A3
A2
A1
A0
Pin Configuration
Top view
14
1
2
3
4
5
6
28-pin
7
300 mil
8
9
10
11
12
13
14
SOJ
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
DD
WE
A13
A8
A9
A11
OE
A10
CE
DQ8
DQ7
DQ6
DQ5
DQ4
OE
A11
A
A8
A13
WE
V
A14
A12
A7
A6
A5
A4
A3
1
2
9
DD
3
4
5
6
7
8
9
10
11
12
13
14
28- pin
8 x 13.4 TSOP I
28
27
26
25
24
23
22
21
20
19
18
17
16
15
10
A
CE
DQ
DQ7
DQ6
DQ5
DQ4
V
SS
DQ3
DQ2
DQ1
A0
A1
A2
8
Rev: 1.11 11/2004 1/11 © 1999, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
A
A14
CE
WE
OE
GS70328SJ/TS
Block Diagram
0
Address
Input
Buffer
Control
Row
Decoder
Memory Array
Column
Decoder
I/O Buffer
DQ1
DQ8
Truth Table
CE OE WE DQ1 to DQ8
H X X Not Selected ISB1, ISB2
L L H Read
LH H High Z
X: “H” or “L”
Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply Voltage VDD –0.5 to +4.6 V
Input Voltage V
Output Voltage V
IN
OUT
–0.5 to V
(≤ 4.6 V max.)
–0.5 to VDD + 0.5
(≤ 4.6 V max.)
DD
+ 0.5
V
V
VDD Current
I
DDLX L Write
Allowable power dissipation PD 0.7 W
Storage temperature T
STG –55 to 150
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.
Rev: 1.11 11/2004 2/11 © 1999, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Recommended Operating Conditions
Parameter Symbol Minimum Typical Maximum Unit
GS70328SJ/TS
Supply Voltage for -7/8/10/12
Input High Voltage V
Input Low Voltage V
Ambient Temperature,
Commercial Range
Ambient Temperature,
Industrial Range
V
DD
IH 2.0 —
IL –0.3 — 0.8 V
T
Ac 0—70
T
AI –40 — 85
3.0 3.3 3.6 V
Notes:
1. Input overshoot voltage should be less than V
+2 V and not exceed 20 ns.
DD
2. Input undershoot voltage should be greater than –2 V and not exceed 20 ns.
Capacitance
Parameter Symbol Test Condition Maximum Unit
C
C
OUT
IN
Input Capacitance
Output Capacitance
Notes:
1. Tested at T
A = 25°C, f = 1 MHz
2. These parameters are sampled and are not 100% tested.
V
V
IN
OUT
= 0 V
= 0 V
V
DD
+ 0.3
V
o
C
o
C
5pF
7pF
DC I/O Pin Characteristics
Parameter Symbol Test Conditions Min Max
V
Input Leakage Current IIL
Output Leakage Current I
Output High Voltage V
Output Low Voltage V
LO
OH IOH = –4 mA 2.4 V —
OL ILO = +4 mA — 0.4 V
Rev: 1.11 11/2004 3/11 © 1999, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
= 0 to V
IN
Output High Z
V
= 0 to V
OUT
DD
DD
–1uA 1uA
–1uA 1uA
Power Supply Currents
Parameter Symbol Test Conditions
≤ VIL
CE
Operating
Supply
Current
Standby
Current
Standby
Current
IDD
ISB1
ISB2
All other inputs
≥ VIH or ≤ VIL
Min. cycle time
IOUT = 0 mA
≥ VIH
CE
All other inputs
≥ VIH or ≤VIL
Min. cycle time
CE
≥ VDD – 0.2 V
All other inputs
– 0.2 V or
≥ V
DD
≤ 0.2 V
GS70328SJ/TS
0 to 70°C -40 to 85°C
7 ns 8 ns 10 ns 12 ns 15 ns 7 ns 8 ns 10 ns 12 ns 15 ns
75 mA 65 mA 50 mA 50 mA 50 mA 80 mA 70 mA 55 mA 55 mA 55 mA
35 mA 30 mA 25 mA 25 mA 25 mA 40 mA 35 mA 30 mA 30 mA 30 mA
1 mA 2 mA
AC Test Conditions
Parameter Conditions
Input high level VIH = 2.4 V
Input low level V
Input rise time tr = 1 V/ns
Input fall time tf = 1 V/ns
Input reference level 1.4 V
Output reference level 1.4 V
Output load Fig. 1& 2
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, tHZ, tOLZ and tOHZ
IL = 0.4 V
DQ
Output Load 1
VT = 1.4 V
Output Load 2
DQ
5pF
1
50Ω
3.3 V
589Ω
434Ω
30pF
1
Rev: 1.11 11/2004 4/11 © 1999, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Loading...