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Cypress CY7C292A Manuel d'utilisateur

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2K x 8 Reprogrammable PROM
CY7C291A
CY7C292A/CY7C293A
Cypress Semiconductor Corporation
• 3901 North First Street • San Jose • CA 95134 • 408-943-2600
March 1986 – Revised May 1993
92A
Features
•
Windowed for reprogrammability
•
CMOS for optimum speed/power
•
High speed
—
20 ns (commercial)
—
25 ns (military)
•
Low power
—
660 mW (commercial and military)
•
Low standby power
—
220 mW (commercial and military)
•
EPROM technology 100% programmable
•
Slim 300-mil or standard 600-mil packaging available
•
5V
±
10% V
CC
, commercial and military
•
TTL-compatible I/O
•
Direct replacement for bipolar PROMs
•
Capable of withstanding >2001V static discharge
Functional Description
The CY7C291A, CY7C292A, and CY7C293A are high-perfor-
mance 2K-word by 8-bit CMOS PROMs. They are functionally
identical, but are packaged in 300-mil (7C291A, 7C293A) and
600-mil wide plastic and hermetic DIP packages (7C292A).
The CY7C293A has an automatic power down feature which
reduces the power consumption by over 70% when deselect-
ed. The 300-mil ceramic package may be equipped with an
erasure window; when exposed to UV light the PROM is
erased and can then be reprogrammed. The memory cells uti-
lize proven EPROM floating-gate technology and byte-wide in-
telligent programming algorithms.
The CY7C291A, CY7C292A, and CY7C293A are plug-in re-
placements for bipolar devices and offer the advantages of
lower power, reprogrammability, superior performance and
programming yield. The EPROM cell requires only 12.5V for
the supervoltage and low current requirements allow for gang
programming. The EPROM cells allow for each memory loca-
tion to be tested 100%, as each location is written into, erased,
and repeatedly exercised prior to encapsulation. Each PROM
is also tested for AC performance to guarantee that after cus-
tomer programming the product will meet DC and AC specifi-
cation limits.
A read is accomplished by placing an active LOW signal on
CS
1
, and active HIGH signals on CS
2
and CS
3
. The contents
of the memory location addressed by the address line (A
0
−
A
10
) will become available on the output lines (O
0
−
O
7
).
Logic Block Diagram Pin Configurations
C291A-1
C291A-2
C291A-3
O
7
O
6
O
5
O
4
O
3
O
2
O
1
O
0
PROGRAM-
MABLE
ARRAY
MULTI-
PLEXER
GND
1
2
3
4
5
6
7
8
9
10
11 14
15
16
20
19
18
17
21
24
23
22
A
6
A
5
A
4
A
3
A
2
A
1
A
0
O
0
A
7
O
3
V
CC
A
8
A
9
A
10
O
7
O
6
O
5
O
4
CS
1
O
2
12 13
O
1
CS
3
CS
2
28
4
5
6
7
8
9
10
321 27
1314151617
26
25
24
23
22
21
20
11
12
19
A
5
V
CC
GND
A
6
A
7
O
3
O
1
O
0
18
O
4
O
5
NC
A
0
A
4
A
3
A
10
NC
A
8
A
9
NC
NC
CS
1
CS
2
O
7
O
6
A
2
A
1
CS
3
O
2
CS
1
CS
2
CS
3
POWER
DOWN
7C293A
Window available on
7C291A and 7C293A
only.
DIP
LCC/PLCC (Opaque Only)
Top View
Top View
ADDRESS
DECODER
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
8
A
9
A
10
A
7
COLUMN
ADDRESS
ROW
ADDRESS
7C291A
7C292A
7C293A
7C291A
7C293A
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1 2 3 4 5 6 ... 15 16

Résumé du contenu

Page 1 - 2K x 8 Reprogrammable PROM

2K x 8 Reprogrammable PROMCY7C291ACY7C292A/CY7C293A Cypress Semiconductor Corporation• 3901 North First Street • San Jose • CA 95134 • 408-943-2600Mar

Page 2

CY7C291ACY7C292A/CY7C293A10 50 60 CY7C291AL-50JC J64 28-Lead Plastic Leaded Chip Carrier CommercialCY7C291AL-50PC P13 24-Lead (300-Mil) Molded DIPCY7C

Page 3

CY7C291ACY7C292A/CY7C293A11 30 120 CY7C293A-30DMB D14 24-Lead (300-Mil) CerDIP MilitaryCY7C293A-30LMB L64 28-Square Leadless Chip CarrierCY7C293A-30QM

Page 4

CY7C291ACY7C292A/CY7C293A12 MILITARY SPECIFICATIONSGroup A Subgroup TestingDocument #: 38-00075-GDC CharacteristicsParameter SubgroupsVOH1, 2, 3VOL1,

Page 5

CY7C291ACY7C292A/CY7C293A13 Package Diagrams24-Lead (600-Mil) CerDIP D12MIL-STD-1835 D- 3 Config.A28-Square LeadlessChipCarrier L64MIL-STD-1835 C-424

Page 6

CY7C291ACY7C292A/CY7C293A14 Package Diagrams (Continued)24-Lead (600-Mil) Molded DIP P1124-Lead (300-Mil) Molded DIP P13/P13A

Page 7

CY7C291ACY7C292A/CY7C293A © Cypress Semiconductor Corporation, 1993. The information contained herein is subject to change without notice. Cypress Sem

Page 8

CY7C291ACY7C292A/CY7C293A16 Package Diagrams (Continued)24-Lead Windowed Cerpack T7324-Lead (300-Mil) WindowedCerDIP W14MIL-STD-1835 D- 9 Config.A

Page 9

CY7C291ACY7C292A/CY7C293A2 Maximum Ratings(Above which the useful life may be impaired. For user guide-lines, not tested.)Storage Temperature ...

Page 10 - CY7C292A/CY7C293A

CY7C291ACY7C292A/CY7C293A3 Electrical Characteristics Over the Operating Range[3,4]7C291A-207C292A-207C293A-207C291A-257C292A-257C293A-257C291AL-257C2

Page 11

CY7C291ACY7C292A/CY7C293A4 Electrical Characteristics Over the Operating Range[3,4] (continued)7C291AL-35, 507C292AL-35, 507C293AL-35, 507C291A-35, 50

Page 12

CY7C291ACY7C292A/CY7C293A5 AC Test Loads and Waveforms[4]tPUtAAtHZCStACS50% 50%tPD3.0V5VOUTPUTR1250ΩR2167Ω30pFINCLUDINGJIG ANDSCOPEGND90%10%90%10%<

Page 13

CY7C291ACY7C292A/CY7C293A6 Erasure CharacteristicsWavelengths of light less than 4000 Angstroms begin to erasethese PROMs. For this reason, an opaque

Page 14

CY7C291ACY7C292A/CY7C293A7 Figure 1. Programming PinoutsC291A-8C291A-91234567891011121617181920242322211314A8A7A6A5A4A3A2A1A0D0D1D2GNDVCCD7D6D4D5D315A

Page 15

CY7C291ACY7C292A/CY7C293A8 Typical DC and AC Characteristics1501751257550250.0 1.0 2.0 3.0OUTPUT SINK CURRENT (mA)0100OUTPUT VOLTAGE (V)OUTPUT SINK CU

Page 16

CY7C291ACY7C292A/CY7C293A9 CY7C291AL-35PC P13 24-Lead (300-Mil) Molded DIPCY7C291AL-35WC W14 24-Lead (300-Mil) Windowed CerDIP90 CY7C291A-35SC S13 24-

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