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Cypress Semiconductor Electronic Components Datasheet

CY7C293A Datasheet

2K x 8 Reprogrammable PROM

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CY7C293A pdf
92A
CY7C291A
CY7C292A/CY7C293A
2K x 8 Reprogrammable PROM
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% VCC, 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
CS1, and active HIGH signals on CS2 and CS3. The contents
of the memory location addressed by the address line (A0
A10) will become available on the output lines (O0 O7).
Logic Block Diagram
A0
A1
A2 ROW
A3 ADDRESS
A4
A5
A6
ADDRESS
DECODER
A7
A8
A9
COLUMN
ADDRESS
A10
PROGRAM-
MABLE
ARRAY
MULTI-
PLEXER
POWER
DOWN
7C293A
CS1
CS2
CS3
Pin Configurations
O7
O6 A7
A6
O5 A5
A4
A3
O4 A2
A1
O3 A0
O0
O1
O2 O2
GND
O1
O0
C291A-1
DIP
Top View
1 24
2 23
3 7C291A 22
4 7C292A 21
5 7C293A 20
6 19
7 18
8 17
9 16
10 15
11 14
12 13
VCC
A8
A9
A10
CS1
CS2
CS3
O7
O6
O5
O4
O3
C291A-2
LCC/PLCC (Opaque Only)
Top View
4 3 2 1 28 27 26
A4 5
A3 6
A2 7
A1 8
7C291A
25 A10
24 CS1
23 CS2
22 CS3
A0 9
NC 10
7C293A
21 NC
20 O7
O0 11
19 O6
12 1314151617 18
C291A-3
Window available on
7C291A and 7C293A
only.
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
March 1986 – Revised May 1993


Cypress Semiconductor Electronic Components Datasheet

CY7C293A Datasheet

2K x 8 Reprogrammable PROM

No Preview Available !

CY7C293A pdf
CY7C291A
CY7C292A/CY7C293A
Selection Guide
Maximum Access Time (ns)
Maximum Operating Standard
Current (mA)
L
Standby Current (mA)
7C293A Only
Commercial
Military
Commercial
Commercial
Military
7C291A-20
7C292A-20
7C293A-20
20
120
40
7C291A-25
7C292A-25
7C293A-25
7C291AL-25
7C292AL-25
7C293AL-25
25
90
120
60
30
40
7C291A-35
7C292A-35
7C293A-35
7C291AL-35
7C292AL-35
7C293AL-35
35
90
90
60
30
40
7C291A-50
7C292A-50
7C293A-50
7C291AL-50
7C292AL-50
7C293AL-50
50
90
90
60
30
40
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature ......................................−65°C to+150°C
Ambient Temperature with
Power Applied ................................................... −55°C to+125°C
Supply Voltage to Ground Potential...................−0.5V to+7.0V
DC Voltage Applied to Outputs
in High Z State ......................................................−0.5V to+7.0V
DC Input Voltage .................................................−3.0V to +7.0V
DC Program Voltage .....................................................13.0V
UV Exposure.................................................7258 Wsec/cm2
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current..................................................... >200 mA
Operating Range
Range
Commercial
Industrial[1]
Military[2]
Ambient
Temperature
0°C to + 70°C
40°C to + 85°C
55°C to + 125°C
VCC
5V ±10%
5V ±10%
5V ±10%
Notes:
1. Contact a Cypress representative for industrial temperature range spec-
ifications.
2. TA is the instant oncase temperature.
2


Part Number CY7C293A
Description 2K x 8 Reprogrammable PROM
Maker Cypress Semiconductor
Total Page 16 Pages
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