GS71024T/U
TQFP, FPBGA
Commercial Temp
Industrial Temp
64K x 24
1.5Mb Asynchronous SRAM
8, 10, 12, 15 ns 3.3 V VDD
Features
•Fast access time: 8, 10, 12, 15 ns
•CMOS low power operation: 190/160/130/110 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
•Package
T:100-pin TQFP package
U:6 mm x 8 mm Fine Pitch Ball Grid Array
Description
The GS71024 is a high speed CMOS static RAM organized as 65,536 words by 24 bits. Static design eliminates the need for external clocks or timing strobes. The GS71024 operates on a single 3.3 V power supply, and all inputs and outputs are TTLcompatible. The GS71024 is available in a 6 mm x 8 mm Fine Pitch BGA package, as well as in a 100-pin TQFP package.
Fine Pitch BGA Bump Configuration
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1 |
2 |
3 |
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4 |
5 |
6 |
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A |
DQ A3 |
A2 |
A1 |
A0 |
DQ |
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B |
DQ |
DQ |
CE2 |
WE |
DQ |
DQ |
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C |
DQ |
DQ |
CE1 |
OE |
DQ |
DQ |
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D |
VSS |
DQ |
A5 |
A4 |
DQ |
VDD |
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E |
VDD |
DQ |
A7 |
A6 |
DQ |
VSS |
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F |
DQ |
DQ |
A9 |
A8 |
DQ |
DQ |
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G |
DQ |
DQ |
A11 |
A10 |
DQ |
DQ |
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H |
DQ |
A15 |
A14 |
A13 |
A12 |
DQ |
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6 mm x 8 mm, 0.75 mm Bump Pitch Top View
Pin Descriptions
Symbol |
Description |
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Symbol |
Description |
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A0 to A15 |
Address input |
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DQ1 to DQ24 |
Data input/output |
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X/Y |
Vector Input |
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V/S |
Address Multiplexer Control |
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WE |
Write enable input |
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OE |
Output enable input |
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CE1, CE2 |
Chip enable input |
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— |
— |
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VDD |
+3.3 V power supply |
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VSS |
Ground |
Block Diagram
A0 |
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Address |
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Input |
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A14 |
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A15 |
0 |
Q |
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X/Y |
1 |
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V/S |
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CE1 |
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CE2 |
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Control |
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WE |
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OE |
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Row |
Memory Array |
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Decoder |
1024 x 1536 |
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Column |
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Decoder |
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I/O Buffer |
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DQ1 |
DQ24 |
Rev: 1.03 11/2000 |
1/13 |
© 1999, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS71024T/U
100-Pin TQFP Pinout
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A14 |
A15 |
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CE1 |
CE2 |
NC |
NC |
NC |
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X/Y |
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V/S |
V |
V |
NC |
WE |
NC |
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OE |
NC |
NC |
NC |
A0 |
A1 |
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DD |
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SS |
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NC |
100 |
99 |
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97 |
96 |
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1 |
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80 |
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NC |
2 |
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79 |
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NC |
3 |
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NC |
4 |
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NC |
5 |
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76 |
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DQ13 |
6 |
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75 |
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DQ14 |
7 |
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74 |
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DQ15 |
8 |
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73 |
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DQ16 |
9 |
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72 |
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VSS |
10 |
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71 |
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VDD |
11 |
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Top View |
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70 |
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DQ17 |
12 |
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69 |
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DQ18 |
13 |
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68 |
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|||||||
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|
|||||||
NC |
14 |
|
|
|
|
|
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|
|
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|
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|
67 |
|
|
||||
|
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|||||||
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|
|||||||
VDD |
15 |
|
|
|
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|
66 |
|
|
||||
|
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|||||||
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|
|||||||
NC |
16 |
|
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|
65 |
|
|
||||
|
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|
|||||||
VSS |
17 |
|
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|
64 |
|
|
||||
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|||||||
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|
|||||||
DQ19 |
18 |
|
|
|
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63 |
|
|
||||
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|
|||||||
DQ20 |
19 |
|
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62 |
|
|
||||
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|||||||
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|
|||||||
VDD |
20 |
|
|
|
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|
61 |
|
|
||||
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|||||||
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|
|||||||
VSS |
21 |
|
|
|
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|
60 |
|
|
||||
|
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|
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|
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|
|
|
|
|||||||
DQ21 |
22 |
|
|
|
|
|
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|
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|
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|
59 |
|
|
||||
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|
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|
|
|
|
|||||||
DQ22 |
23 |
|
|
|
|
|
|
|
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|
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|
58 |
|
|
||||
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|
|||||||
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|
|
|
|
|
|
|||||||
DQ23 |
24 |
|
|
|
|
|
|
|
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|
|
|
|
|
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|
57 |
|
|
||||
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|||||||
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|
|
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|
|||||||
DQ24 |
25 |
|
|
|
|
|
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|
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|
56 |
|
|
||||
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|||||||
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|
|||||||
NC |
26 |
|
|
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|
55 |
|
|
||||
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|||||||
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|
|||||||
NC |
27 |
|
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|
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54 |
|
|
||||
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|||||||
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|
|||||||
NC |
28 |
|
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|
53 |
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|
||||
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|||||||
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|
|||||||
NC |
29 |
|
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52 |
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||||
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|||||||
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|
|||||||
NC |
30 |
|
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51 |
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||||
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|||||||
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|||||||
|
31 |
32 |
|
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
49 |
50 |
|
|
||||||||||||||||||||||||||||||||||
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NC A13 |
A12 |
A11 |
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A10 |
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A9 |
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A8 |
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NC NC V |
V |
NC NC |
A7 |
A6 |
A5 |
A4 |
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A3 |
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A2 |
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NC |
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SS |
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DD |
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NC
NC
NC
NC
NC
DQ12 DQ11 DQ10 DQ9
VSS
VDD
DQ8
DQ7
VSS
NC
VDD
NC DQ6 DQ5
VDD VSS
DQ4 DQ3 DQ2 DQ1 NC NC NC NC NC
Rev: 1.03 11/2000 |
2/13 |
© 1999, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS71024T/U
Truth Table
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VDD Current |
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CE1 |
CE2 |
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OE |
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WE |
V/S |
Mode |
DQ0 to DQ23 |
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H |
X |
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X |
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X |
X |
Not selected |
High Z |
ISB1, ISB2 |
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X |
L |
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X |
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X |
X |
Not selected |
High Z |
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L |
H |
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L |
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H |
H |
Read using X/Y |
Data Out |
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L |
H |
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L |
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H |
L |
Read using A15 |
Data Out |
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IDD |
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L |
H |
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X |
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L |
H |
Write using X/Y |
Data In |
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L |
H |
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X |
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L |
L |
Write using A15 |
Data In |
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L |
H |
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H |
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H |
X |
Output disable |
High Z |
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X: “H” or “L”
Absolute Maximum Ratings
Parameter |
Symbol |
Rating |
Unit |
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Supply Voltage |
VDD |
–0.5 to +4.6 |
V |
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Input Voltage |
VIN |
–0.5 to VDD + 0.5 |
V |
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(≤ 4.6 V max.) |
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Output Voltage |
VOUT |
–0.5 to VDD + 0.5 |
V |
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(≤ 4.6 V max.) |
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Allowable TQFP power dissipation |
PD |
1 |
W |
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Allowable FPBGA power dissipation |
PD |
1 |
W |
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Storage temperature |
TSTG |
–55 to 150 |
oC |
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: 1.03 11/2000 |
3/13 |
© 1999, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS71024T/U |
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Recommended Operating Conditions |
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Parameter |
Symbol |
Minimum |
Typical |
Maximum |
Unit |
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Supply Voltage for -10/12/15 |
VDD |
3.0 |
3.3 |
3.6 |
V |
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Supply Voltage for -8 |
VDD |
3.135 |
3.3 |
3.6 |
V |
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Input High Voltage |
VIH |
2.0 |
— |
VDD + 0.3 |
V |
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Input Low Voltage |
VIL |
–0.3 |
— |
0.8 |
V |
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Ambient Temperature, |
TAc |
0 |
— |
70 |
oC |
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Commercial Range |
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Ambient Temperature, |
TAi |
–40 |
— |
85 |
oC |
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Industrial Range |
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Notes:
1.Input overshoot voltage should be less than VDD + 2 V and not exceed 20 ns.
2.Input undershoot voltage should be greater than –2 V and not exceed 20 ns.
Capacitance
Parameter |
Symbol |
Test Condition |
Maximum |
Unit |
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Input Capacitance |
CIN |
VIN = 0 V |
5 |
pF |
I/O Capacitance |
COUT |
VOUT = 0 V |
7 |
pF |
Notes:
1.Tested at TA = 25°C, f = 1 MHz
2.These parameters are sampled and are not 100% tested
DC I/O Pin Characteristics
Parameter |
Symbol |
Test Conditions |
Minimum |
Maximum |
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Input Leakage Current |
IIL |
VIN = 0 to VDD |
–1uA |
1uA |
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Output Leakage Current |
IOL |
Output High Z, VOUT = 0 |
–1uA |
1uA |
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to VDD |
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Output High Voltage |
VOH |
IOH = –4mA |
2.4 |
— |
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Output Low Voltage |
VOL |
IOL = +4mA |
— |
0.4 V |
Rev: 1.03 11/2000 |
4/13 |
© 1999, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.