Preliminary
GS880F18/36T-10/11/11.5/12/14
100 Pin TQFP
Commercial Temp
Industrial Temp
512K x 18, 256K x 36 8Mb Sync Burst SRAMs
10ns - 14ns 3.3V VDD 3.3V & 2.5V I/O
Features
•Flow through mode operation.
•3.3V +10%/-5% Core power supply.
•2.5V or 3.3V I/O supply.
•LBO pin for linear or interleaved burst mode.
•Internal input resistors on mode pins allow floating mode pins. Default to Interleaved Pipelined Mode.
•Byte write (BW) and/or global write (GW) operation.
•Common data inputs and data outputs.
•Clock Control, registered, address, data, and control.
•Internal Self-Timed Write cycle.
•Automatic power-down for portable applications.
•100-lead TQFP package
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-10 |
-11 |
-11.5 |
-12 |
-14 |
Flow Through |
tKQ |
10ns |
11ns |
11.5ns |
12ns |
14ns |
2-1-1-1 |
tCycle |
10ns |
15ns |
15ns |
15ns |
15ns |
|
IDD |
225mA |
180mA |
180mA |
180mA |
175mA |
Functional Description
Applications
The GS880F18/32/36T is a 9,437,184 bit (8,388,608 bit for x32 version) high performance synchronous SRAM with a 2 bit burst address counter. Although of a type originally developed for Level 2 Cache applications supporting high performance CPU’s, the device now finds application in synchronous SRAM applications ranging from DSP main store to networking chip set support.
Controls
Addresses, data I/O’s, chip enables (E1, E2, E3), address burst control inputs (ADSP, ADSC, ADV) and write control inputs (Bx, BW, GW) are synchronous and are controlled by a positive edge triggered clock input (CK). Output enable (G) and power down control (ZZ) are asynchronous inputs. Burst cycles can be initiated with either ADSP or ADSC inputs. In Burst mode, subsequent burst addresses are generated internally and are controlled by ADV. The burst address counter may be configured to count in either linear or interleave order with the Linear Burst Order (LBO) input. The Burst function need not be used. New addresses can be loaded on every cycle with no degradation of chip performance.
Designing For Compatibility
The JEDEC Standard for Burst RAMS calls for a FT mode pin option (pin 14 on TQFP). Board sites for Flow through Burst RAMS should be designed with VSS connected to the FT pin location to ensure the
broadest access to multiple vendor sources. Boards designed with FT pin pads tied low may be stuffed with GSI’s Pipeline/Flow through configurable Burst RAMS or any vendor’s Flow through or configurable Burst SRAM. Bumps designed with the FT pin location tied High or floating must employ a non-configurable Flow through Burst RAM, like this RAM, to achieve Flow through functionality.
88018/32/36TByte Write and Global Write
Byte write operation is performed by using byte write enable (BW) input combined with one or more individual byte write signals (Bx). In addition, Global Write (GW) is available for writing all bytes at one time, regardless of the Byte Write control inputs.
Sleep Mode
Low power (Sleep mode) is attained through the assertion (High) of the ZZ signal, or by stopping the clock (CK). Memory data is retained during Sleep mode.
Core and Interface Voltages
The GS880F18/32/36T operates on a 3.3V power supply and all inputs/outputs are 3.3V and 2.5V compatible. Separate output power (VDDQ) pins are used to de-couple output noise from the internal circuit.
Rev: 1.03 3/2000 |
1/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
Preliminary
GS880F18/36T-10/11/11.5/12/14
GS880F18 100 Pin TQFP Pinout
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A6 |
A7 |
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E1 |
E2 |
NC |
NC |
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BB |
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BA |
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E3 |
VDD |
VSS |
CK |
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GW |
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BW |
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G |
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ADSC |
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ADSP |
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ADV |
A8 |
A9 |
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NC |
100 |
99 |
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95 |
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1 |
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NC |
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79 |
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NC |
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78 |
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VDDQ |
4 |
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77 |
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VSS |
5 |
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76 |
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NC |
6 |
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75 |
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NC |
7 |
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74 |
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DQB1 |
8 |
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73 |
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DQB2 |
9 |
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512K x 18 |
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72 |
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VSS |
10 |
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71 |
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Top View |
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VDDQ |
11 |
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70 |
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DQB3 |
12 |
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69 |
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DQB4 |
13 |
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68 |
|
|
|||
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||||||
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||||||
NC |
14 |
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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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||||||
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|
||||||
VSS |
17 |
|
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|
64 |
|
|
|||
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||||||
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|
||||||
DQB5 |
18 |
|
|
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|
63 |
|
|
|||
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||||||
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|
||||||
DQB6 |
19 |
|
|
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|
62 |
|
|
|||
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||||||
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|
||||||
VDDQ |
20 |
|
|
|
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|
61 |
|
|
|||
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|
|
|
||||||
VSS |
21 |
|
|
|
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|
60 |
|
|
|||
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|
||||||
DQB7 |
22 |
|
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|
59 |
|
|
|||
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|
||||||
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|
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|
||||||
DQB8 |
23 |
|
|
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|
58 |
|
|
|||
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|
||||||
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|
||||||
DQB9 |
24 |
|
|
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|
57 |
|
|
|||
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||||||
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|
||||||
NC |
25 |
|
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56 |
|
|
|||
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||||||
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|
||||||
VSS |
26 |
|
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55 |
|
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|||
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||||||
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|
||||||
VDDQ |
27 |
|
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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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|
LBO |
A5 |
A4 |
A3 |
|
A2 |
|
A1 |
A0 |
|
|
NC |
NC |
VSS |
|
VDD |
NC |
A17 |
A10 |
A11 |
A12 |
A13 |
|
|
A14 |
|
A15 |
|
A16 |
|
|
||||||||||||||||||||||||||||
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|
A18
NC
NC
VDDQ
VSS
NC
DQA9
DQA8
DQA7
VSS
VDDQ
DQA6
DQA5
VSS
NC
VDD
ZZ
DQA4
DQA3
VDDQ
VSS
DQA2
DQA1
NC
NC
VSS
VDDQ
NC
NC
NC
Rev: 1.03 3/2000 |
2/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
Preliminary
GS880F18/36T-10/11/11.5/12/14
GS880F32 100 Pin TQFP Pinout
|
|
|
A6 |
A7 |
|
E1 |
E2 |
|
BD |
|
BC |
|
BB |
|
BA |
|
E3 |
VDD |
VSS |
CK |
|
GW |
|
BW |
|
G |
|
ADSC |
|
ADSP |
|
ADV |
A8 |
A9 |
|
|
||||||||||||||||||||||||||||
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||||||||||||||||||||||||||||||||||||||||||||||||
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||||||||||||||||||||||||||||||||||||||||||||||||||
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||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
|
|
|
|
|
NC |
100 |
99 |
|
98 |
97 |
96 |
95 |
|
94 |
93 |
|
92 |
91 |
90 |
89 |
|
88 |
|
87 |
|
86 |
|
85 |
|
84 |
83 |
82 |
81 |
|
|
||||||||||||||||||||||||||||||||||
1 |
|
|
|
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|
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|
|
|
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|
|
|
80 |
|
|
||||
|
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|
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|
||||||
DQC8 |
2 |
|
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|
|
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|
|
|
79 |
|
|
|||
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||||||
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|
||||||
DQC7 |
3 |
|
|
|
|
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|
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|
|
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|
|
|
|
|
|
|
|
78 |
|
|
|||
|
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|
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|
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||||||
|
|
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|
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|
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|
|
|
|
||||||
VDDQ |
4 |
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
77 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
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||||||
|
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|
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|
||||||
VSS |
5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
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|
|
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|
|
|
|
|
|
|
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|
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|
|
|
|
|
|
|
|
|
|
|
76 |
|
|
|||
|
|
|
|
|
|
|
|
|
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|
|
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|
|
|
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|
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|
|
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||||||
|
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|
|
|
||||||
DQC6 |
6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
75 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
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|
|
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|
||||||
|
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|
|
|
||||||
DQC5 |
7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
74 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
||||||
|
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|
|
|
|
||||||
DQC4 |
8 |
|
|
|
|
|
|
|
|
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|
|
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|
|
|
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|
|
|
73 |
|
|
|||
|
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||||||
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|
||||||
DQC3 |
9 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
256K x 32 |
|
|
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|
|
|
72 |
|
|
|||||||||||||||
|
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|||||||||||||||||||
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|
|||||||||||||||||||
VSS |
10 |
|
|
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71 |
|
|
||||||||||||||||
|
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Top View |
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|
|||||||||||||||||
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|
||||||||||||||||||
VDDQ |
11 |
|
|
|
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|
70 |
|
|
|||||||||||||||
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|
||||||||||||||||||
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|
||||||||||||||||||
DQC2 |
12 |
|
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|
69 |
|
|
|||
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||||||
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|
||||||
DQC1 |
13 |
|
|
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|
68 |
|
|
|||
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||||||
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|
||||||
NC |
14 |
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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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||||||
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|
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|
||||||
VSS |
17 |
|
|
|
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|
64 |
|
|
|||
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||||||
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|
|
|
|
||||||
DQD1 |
18 |
|
|
|
|
|
|
|
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|
|
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|
|
63 |
|
|
|||
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|
||||||
|
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|
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|
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|
|
|
|
|
|
|
||||||
DQD2 |
19 |
|
|
|
|
|
|
|
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|
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|
|
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|
62 |
|
|
|||
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|
||||||
|
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|
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|
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|
|
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|
|
|
|
|
|
||||||
VDDQ |
20 |
|
|
|
|
|
|
|
|
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|
|
|
|
|
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|
|
61 |
|
|
|||
|
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|
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|
|
|
|
|
|
|
|
|
|
||||||
VSS |
21 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
60 |
|
|
|||
|
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|
|
|
|
||||||
DQD3 |
22 |
|
|
|
|
|
|
|
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|
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|
|
|
|
|
|
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|
|
|
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|
|
|
59 |
|
|
|||
|
|
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|
|
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|
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|
||||||
|
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|
|
|
|
||||||
DQD4 |
23 |
|
|
|
|
|
|
|
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|
|
|
|
|
|
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|
|
|
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|
|
|
58 |
|
|
|||
|
|
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|
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|
||||||
|
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|
|
|
|
||||||
DQD5 |
24 |
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
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|
|
|
57 |
|
|
|||
|
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|
||||||
|
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|
||||||
DQD6 |
25 |
|
|
|
|
|
|
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|
56 |
|
|
|||
|
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|
||||||
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|
|
|
|
||||||
VSS |
26 |
|
|
|
|
|
|
|
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|
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|
55 |
|
|
|||
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||||||
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|
||||||
VDDQ |
27 |
|
|
|
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54 |
|
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|||
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||||||
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|
||||||
DQD7 |
28 |
|
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53 |
|
|
|||
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||||||
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|
||||||
DQD8 |
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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||||||
|
31 |
32 |
|
33 |
34 |
35 |
36 |
|
37 |
38 |
|
39 |
40 |
41 |
42 |
|
43 |
|
44 |
|
45 |
|
46 |
|
47 |
48 |
49 |
50 |
|
|
||||||||||||||||||||||||||||||||||
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|
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|
|
|
LBO |
A5 |
A4 |
A3 |
|
|
A2 |
|
|
A1 |
A0 |
|
|
NC |
NC |
VSS |
|
VDD |
NC |
A17 |
A10 |
A11 |
A12 |
A13 |
|
|
A14 |
|
A15 |
|
A16 |
|
|
||||||||||||||||||||||||||||
|
|
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|
NC
DQB8
DQB7
VDDQ
VSS
DQB6
DQB5
DQB4
DQB3
VSS
VDDQ
DQB2
DQB1
VSS
NC
VDD
ZZ
DQA1
DQA2
VDDQ
VSS
DQA3
DQA4
DQA5
DQA6
VSS
VDDQ
DQA7
DQA8
NC
Rev: 1.03 3/2000 |
3/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
Preliminary
GS880F18/36T-10/11/11.5/12/14
GS880F36 100 Pin TQFP Pinout
|
|
|
A6 |
A7 |
|
E1 |
E2 |
|
BD |
|
BC |
|
BB |
|
BA |
|
E3 |
VDD |
VSS |
CK |
|
GW |
|
BW |
|
G |
|
ADSC |
|
ADSP |
|
ADV |
A8 |
A9 |
|
|
||||||||||||||||||||||||||||
|
|
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||||||||||||||||||||||||||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||||||||||||||||||||
|
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|
||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DQC9 |
100 |
99 |
|
98 |
97 |
96 |
95 |
|
94 |
93 |
|
92 |
91 |
90 |
89 |
|
88 |
|
87 |
|
86 |
|
85 |
|
84 |
83 |
82 |
81 |
|
|
||||||||||||||||||||||||||||||||||
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
80 |
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
DQC8 |
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
79 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
DQC7 |
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
78 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
VDDQ |
4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
77 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
VSS |
5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
76 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
DQC6 |
6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
75 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
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|
|
|
|
|
|
||||||
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
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|
|
|
|
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|
|
|
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|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
DQC5 |
7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
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|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
74 |
|
|
|||
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||||||
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||||||
DQC4 |
8 |
|
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73 |
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|||
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||||||
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||||||
DQC3 |
9 |
|
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|
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|
|
256K x 36 |
|
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72 |
|
|
|||||||||||||||
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|||||||||||||||||||
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|||||||||||||||||||
VSS |
10 |
|
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71 |
|
|
||||||||||||||||
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|
Top View |
|
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|||||||||||||||||
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||||||||||||||||||
VDDQ |
11 |
|
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|
70 |
|
|
|||||||||||||||
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||||||||||||||||||
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|
||||||||||||||||||
DQC2 |
12 |
|
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69 |
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|
|||
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||||||
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|
||||||
DQC1 |
13 |
|
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|
68 |
|
|
|||
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||||||
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||||||
NC |
14 |
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|
67 |
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|
|||
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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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||||||
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|
||||||
VSS |
17 |
|
|
|
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|
64 |
|
|
|||
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||||||
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|
|
|
||||||
DQD1 |
18 |
|
|
|
|
|
|
|
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|
|
|
|
|
|
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|
63 |
|
|
|||
|
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|
||||||
|
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|
|
|
|
||||||
DQD2 |
19 |
|
|
|
|
|
|
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|
|
|
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|
62 |
|
|
|||
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|
||||||
|
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|
|
|
|
||||||
VDDQ |
20 |
|
|
|
|
|
|
|
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|
61 |
|
|
|||
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|
|
|
|
||||||
VSS |
21 |
|
|
|
|
|
|
|
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|
60 |
|
|
|||
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|
|
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|
||||||
DQD3 |
22 |
|
|
|
|
|
|
|
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|
|
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|
59 |
|
|
|||
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||||||
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|
||||||
DQD4 |
23 |
|
|
|
|
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58 |
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DQD5 |
24 |
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57 |
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DQD6 |
25 |
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56 |
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VSS |
26 |
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55 |
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VDDQ |
27 |
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54 |
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DQD7 |
28 |
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53 |
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DQD8 |
29 |
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52 |
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DQD9 |
30 |
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51 |
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31 |
32 |
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33 |
34 |
35 |
36 |
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37 |
38 |
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39 |
40 |
41 |
42 |
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43 |
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44 |
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45 |
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46 |
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47 |
48 |
49 |
50 |
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LBO |
A5 |
A4 |
A3 |
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A2 |
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A1 |
A0 |
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NC |
NC |
VSS |
|
VDD |
NC |
A17 |
A10 |
A11 |
A12 |
A13 |
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A14 |
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A15 |
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A16 |
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DQB9
DQB8
DQB7
VDDQ
VSS
DQB6
DQB5
DQB4
DQB3
VSS
VDDQ
DQB2
DQB1
VSS
NC
VDD
ZZ
DQA1
DQA2
VDDQ
VSS
DQA3
DQA4
DQA5
DQA6
VSS
VDDQ
DQA7
DQA8
DQA9
Rev: 1.03 3/2000 |
4/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
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Preliminary |
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GS880F18/36T-10/11/11.5/12/14 |
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TQFP Pin Description |
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Pin Location |
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Symbol |
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Type |
Description |
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|||||||||||||||||||
|
37, 36 |
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A0, A1 |
|
I |
Address field LSB’s and Address Counter preset Inputs |
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|
35, 34, 33, 32, 100, 99, 82, 81, |
44, 45, |
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|
A2-17 |
|
I |
Address Inputs |
|
||||||||||||||||||
|
46, 47, 48, 49, 50, 43 |
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||||||||||||||
|
80 |
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A18 |
|
I |
Address Inputs |
|
||||||||||||||
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||||||||||||||||||||||
|
63, 62, 59, 58, 57, 56, 53, 52 |
|
DQA1-DQA8 |
|
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|
||||||||||||||||||||||
|
68, 69, 72, 73, 74, 75, 78, 79 |
|
DQB1-DQB8 |
|
I/O |
Data Input and Output pins. (x32, x36 Version) |
|
||||||||||||||||||||||
|
13, 12, 9, 8, 7, 6, 3, 2 |
|
|
DQC1-DQC8 |
|
|
|||||||||||||||||||||||
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|||||||||||||||||||||||
|
18, 19, 22, 23, 24, 25, 28, 29 |
|
DQD1-DQD8 |
|
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||||||||||||||||||||||
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|||||||||||||||||||
|
51, 80, 1, 30 |
|
|
DQA9, DQB9, |
|
I/O |
Data Input and Output pins. |
|
|||||||||||||||||||||
|
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|
DQC9, DQD9 |
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||||||||||||||
|
51, 80, 1, 30 |
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NC |
|
- |
No Connect (x32 Version) |
|
||||||||||||||
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||||||||||||||||||||||
|
58, 59, 62, 63, 68, 69, 72, 73, 74 |
|
DQA1-DQA9 |
|
I/O |
Data Input and Output pins. |
|
||||||||||||||||||||||
|
8, 9, 12, 13, 18, 19, 22, 23, 24 |
|
DQB1- DQB9 |
|
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||||||||||||||||||||||||
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51, 52, 53, 56, 57 |
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|
75, 78, 79, |
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NC |
|
- |
No Connect |
|
||||||||||||||
|
1, 2, 3, 6, 7 |
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25, 28, 29, 30 |
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||||||||||||||
|
16 |
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DP |
|
I |
Parity Input. 1 = Even, 0 = Odd. |
|
||||||||||||||
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66 |
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O |
Parity Error Out. Open Drain Output. |
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QE |
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87 |
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I |
Byte Write. Writes all enabled bytes. Active Low. |
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BW |
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93, 94 |
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A, |
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B |
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I |
Byte Write Enable for DQA, DQB Data I/O’s. Active Low. |
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B |
B |
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Byte Write Enable for DQC, DQD Data I/O’s. Active Low. (x32, x36 |
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95, 96 |
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BC, BD |
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I |
||||||||||||||||||||||
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Version) |
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95, 96 |
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NC |
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- |
No Connect (x18 Version) |
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89 |
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CK |
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I |
Clock Input Signal. Active High. |
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88 |
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I |
Global Write Enable. Writes all bytes. Active Low. |
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GW |
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98, 92 |
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1, |
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3 |
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I |
Chip Enable. Active Low. |
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E |
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E |
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97 |
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E2 |
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I |
Chip Enable. Active High. |
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86 |
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I |
Output Enable. Active Low. |
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G |
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83 |
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I |
Burst address counter advance enable. Active Low. |
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ADV |
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|||||||||||||||||||
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|||||||||||||||||||
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84, 85 |
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I |
Address Strobe (Processor, Cache Controller). Active Low. |
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ADSP, |
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ADSC |
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||||||||||||||||||||||
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64 |
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ZZ |
|
I |
Sleep Mode control. Active High. |
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|||||||||||||
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31 |
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I |
Linear Burst Order mode. Active Low. |
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LBO |
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||||||||||||||||||
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||||||||||||||||
|
15, 41, 65, 91 |
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|
VDD |
|
I |
Core power supply. |
|
||||||||||||||||
|
5,10,17, 21, 26, 40, 55, 60, 67, 71, 76, 90 |
|
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|
|
VSS |
|
I |
I/O and Core Ground. |
|
|||||||||||||||||
|
4, 11, 20, 27, 54, 61, 70, 77 |
|
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|
|
VDDQ |
|
I |
Output driver power supply. |
|
|||||||||||||||||||
|
14, 16, 38, 39, 42, 66 |
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NC |
|
- |
No Connect. |
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||||||||||||||
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Rev: 1.03 3/2000 |
5/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
|
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|
|
Preliminary |
|
|
|
|
|
GS880F18/36T-10/11/11.5/12/14 |
|
GS880F18/32/36 Block Diagram |
|
|
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||
|
Register |
|
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|
|
A0-An |
D |
Q |
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A0 |
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A0 |
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D0 |
|
Q0 |
A1 |
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A1 |
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D1 |
|
Q1 |
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|
Counter |
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A |
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|
Load |
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|
LBO |
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Memory |
ADV |
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CK |
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Array |
ADSC |
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ADSP |
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Q |
D |
GW |
|
Register |
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BW |
|
D |
Q |
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BA |
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Register |
|
36 |
36 |
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D |
Q |
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BB |
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4 |
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Register |
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D |
Q |
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BC |
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|
Register Q D |
Register D Q |
|
|
Register |
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|||
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D |
Q |
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BD |
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Register |
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D |
Q |
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1 |
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Register |
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E |
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D |
Q |
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|||||
E2 |
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||||||||
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||||||||
E3 |
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|||||||
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Register
D Q
0 G
ZZ |
|
Power Down |
1 |
DQx0-DQx9 |
|
Control |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
Note: Only x36 version shown for simplicity.
Rev: 1.03 3/2000 |
6/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
Preliminary
GS880F18/36T-10/11/11.5/12/14
Mode Pin Functions
Mode Name |
Pin Name |
State |
Function |
||
|
|
|
|
|
|
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|
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|
|
|
|
L |
Linear Burst |
Burst Order Control |
|
LBO |
|||
|
|
|
|||
|
H or NC |
Interleaved Burst |
|||
|
|
|
|
||
|
|
|
|
|
|
Power Down Control |
|
ZZ |
L or NC |
Active |
|
|
|
|
|||
|
H |
Standby, IDD = ISB |
|||
|
|
|
|
Note:
There is a pull up device on the LBO pin and a pull down device on the ZZ pin, so those input pins can be unconnected and the chip will operate in the default states as specified in the above tables.
Burst Counter Sequences
Linear Burst Sequence
|
A[1:0] |
A[1:0] |
A[1:0] |
A[1:0] |
|
|
|
|
|
|
|
|
|
|
1st address |
00 |
01 |
10 |
11 |
|
|
|
|
|
2nd address |
01 |
10 |
11 |
00 |
|
|
|
|
|
3rd address |
10 |
11 |
00 |
01 |
|
|
|
|
|
4th address |
11 |
00 |
01 |
10 |
|
|
|
|
|
Note: The burst counter wraps to initial state on the 5th clock.
Interleaved Burst Sequence
|
A[1:0] |
A[1:0] |
A[1:0] |
A[1:0] |
|
|
|
|
|
|
|
|
|
|
1st address |
00 |
01 |
10 |
11 |
|
|
|
|
|
2nd address |
01 |
00 |
11 |
10 |
|
|
|
|
|
3rd address |
10 |
11 |
00 |
01 |
|
|
|
|
|
4th address |
11 |
10 |
01 |
00 |
|
|
|
|
|
Note: The burst counter wraps to initial state on the 5th clock.
BPR 1999.05.18
Byte Write Truth Table
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Function |
|
GW |
|
BW |
|
BA |
|
BB |
BC |
BD |
Notes |
||||||||
|
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|
Read |
|
H |
|
H |
|
X |
|
X |
|
X |
|
X |
1 |
||||||
|
|
|
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|
|
|
|
|
|
Read |
|
H |
|
L |
|
H |
|
H |
|
H |
|
H |
1 |
||||||
|
|
|
|
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|
|
|
|
|
|
|
|
|
Write byte a |
|
H |
|
L |
|
L |
|
H |
|
H |
|
H |
2, 3 |
||||||
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
Write byte b |
|
H |
|
L |
|
H |
|
L |
|
H |
|
H |
2, 3 |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Write byte c |
|
H |
|
L |
|
H |
|
H |
|
L |
|
H |
2, 3, 4 |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Write byte d |
|
H |
|
L |
|
H |
|
H |
|
H |
|
L |
2, 3, 4 |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Write all bytes |
|
H |
|
L |
|
L |
|
L |
|
L |
|
L |
2, 3, 4 |
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Write all bytes |
|
L |
|
X |
|
X |
|
X |
|
X |
|
X |
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Note:
1.All byte outputs are active in read cycles regardless of the state of Byte Write Enable inputs.
2.Byte Write Enable inputs BA, BB, BC and/or BD may be used in any combination with BW to write single or multiple bytes.
3.All byte I/O’s remain High-Z during all write operations regardless of the state of Byte Write Enable inputs.
4.Bytes “C” and “D” are only available on the x32 and x36 versions.
Rev: 1.03 3/2000 |
7/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
N |
Preliminary
GS880F18/36T-10/11/11.5/12/14
Synchronous Truth Table
|
Address |
State |
|
|
|
2 |
|
|
|
|
|
|
|
|
|
|
|
Operation |
Diagram |
E1 |
ADSP |
|
ADSC |
|
|
ADV |
W3 |
DQ4 |
|||||||
Used |
E2 |
|
|
|
|||||||||||||
|
Key5 |
|
|
|
(x36only) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Deselect Cycle, Power |
None |
X |
|
H |
X |
|
X |
|
|
L |
|
|
X |
X |
High-Z |
||
Down |
|
|
|
|
|
|
|||||||||||
|
|
|
|
|
|
|
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|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
Deselect Cycle, Power Down |
None |
X |
|
L |
F |
|
L |
|
|
X |
|
|
X |
X |
High-Z |
||
Deselect Cycle, Power |
None |
X |
|
L |
F |
|
H |
|
|
L |
|
|
X |
X |
High-Z |
||
Down |
|
|
|
|
|
|
|||||||||||
|
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||
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Read Cycle, Begin Burst |
External |
R |
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L |
T |
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L |
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X |
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X |
X |
Q |
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Read Cycle, Begin Burst |
External |
R |
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L |
T |
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H |
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L |
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X |
F |
Q |
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Write Cycle, Begin Burst |
External |
W |
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L |
T |
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H |
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L |
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X |
T |
D |
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Read Cycle, Continue Burst |
Next |
CR |
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X |
X |
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H |
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H |
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L |
F |
Q |
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Read Cycle, Continue Burst |
Next |
CR |
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H |
X |
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X |
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H |
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L |
F |
Q |
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Write Cycle, Continue Burst |
Next |
CW |
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X |
X |
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H |
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H |
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L |
T |
D |
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Write Cycle, Continue Burst |
Next |
CW |
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H |
X |
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X |
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H |
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L |
T |
D |
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Read Cycle, Suspend Burst |
Current |
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X |
X |
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H |
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H |
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H |
F |
Q |
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Read Cycle, Suspend Burst |
Current |
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H |
X |
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X |
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H |
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H |
F |
Q |
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Write Cycle, Suspend Burst |
Current |
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X |
X |
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H |
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H |
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H |
T |
D |
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Write Cycle, Suspend Burst |
Current |
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H |
X |
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X |
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H |
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H |
T |
D |
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Note: |
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1.X = Don’t Care, H = High, L = Low.
2.For x36 Version, E = T (True) if E2 = 1 and E3 = 0; E = F (False) if E2 = 0 or E3 = 1.
3.W = T (True) and F (False) is defined in the Byte Write Truth Table preceding.
4.G is an asynchronous input. G can be driven high at any time to disable active output drivers. G low can only enable active drivers (shown as “Q” in the Truth Table above).
5.All input combinations shown above are tested and supported. Input combinations shown in gray boxes need not be used to accomplish basic synchronous or synchronous burst operations and may be avoided for simplicity.
6.Tying ADSP high and ADSC low allows simple non-burst synchronous operations. See BOLD items above.
7.Tying ADSP high and ADV low while using ADSC to load new addresses allows simple burst operations. See ITALIC items above.
Rev: 1.03 3/2000 |
8/25 |
© 2000, Giga Semiconductor, Inc. |
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. |
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