Cypress CY7C291A, CY7C293A, CY7C292A User Manual

92A

CY7C291A

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

CY7C292A/CY7C293A

2K x 8 Reprogrammable PROM

identical, bu t are pac ka ged in 300 -mil (7C29 1A, 7C293A) an d
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 deselect­ed. 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 reprogr ammed. The memo ry cells uti­lize prov en EPR OM floatin g-gate techno log y and b yte-wide in­telligent programming algorithms.

The CY7C291A, CY7C292A, and CY7C293A are plug-in re­placements 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 loca­tion 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 cus­tomer programming the product will meet DC and AC specifi­cation limits.

A read is accomplished by placing an active LOW signal on

, and active HIGH signals on CS2 and CS3. The contents

CS

1

of the memory location addressed by the address line (A

) will become available on the output lines (O0 − O7).

A

10

−

0

The CY7C291A, CY7C2 92A, an d CY7C2 93A are high-pe rf or­mance 2K-word b y 8-bit CMOS PR OMs . The y are functi onally

LogicBlock Diagram Pin Configurations

A

CS
CS
CS

A

0

A

1

A

2

A

3

A

4

A

5

A

6

A

7

A

8

A

9

10

1
2
3

ROW

ADDRESS

ADDRESS
DECODER

COLUMN

ADDRESS

PROGRAM-

MABLE
ARRAY

POWER

DOWN

7C293A

MULTI-

PLEXER

O

7

O

6

O

5

O

4

O

3

O

2

O

1

O

0

C291A-1

GND

A

7

A

6

A

5

A

4

A

3

A

2

A

1

A

0

O

0

O

1

O

2

DIP

Top View

1
2
3

7C291A
7C292A

4

7C293A

5
6
7
8
9
10
11 14
12 13

24
23
22
21
20
19
18
17
16
15

C291A-2

V
A
A
A
CS
CS
CS
O
O
O
O
O

LCC/PLCC (Opaque Only)

Top View

CC
8
9
10

1
2

3

7
6

5
4
3

NC

5

7

A

A6A

321 27

4

A

5

4

A

6

7C291A

3

A

2

7

A

1

8

A

9

0

7C293A

10

O

11

0

1314151617

12

2

1

O

O

GND

Window available on
7C291A and7C293A
only.

NC

NC

9

CC

V

A8A

28

26

A

25

10

CS

24

1

CS

23

2

CS

3

22
21

NC
O

20

7

19

O

6

18

5

3

O4O

O

C291A-3

Cypress Semiconductor Corporation

• 3901 North First Street • San Jose • CA 95134 • 408-943-2600
March 1986 – Revised May 1993

CY7C291A

CY7C292A/CY7C293A

Selection Guide

7C291A-25
7C292A-25

7C293A-25
7C291A-20
7C292A-20
7C293A-20

7C291AL-25
7C292AL-25
7C293AL-25

Maximum Access Time (ns) 20 25 35 50
Maximum Operating

Current (mA)

Standard Commercial 120 90 90 90

Military 120 90 90

L Commercial 60 60 60

Standby Current (mA)
7C293A Only

Maximum Ratings

(Above wh ich the usefu l life may be impai red. F or us er guid e-

Commercial 40 30 30 30
Military 40 40 40

Latch-Up Current.....................................................>200 mA

Operating Range

lines, not tested.)

Storage Temperature ......................................−65°C to+150°C

Ambient Temperature with

Po wer 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/cm

2

Range

Commercial 0°C to + 70°C 5V ±10%
Industrial
Military

Notes:

1. Contact a Cypress representative for industrial temperature range spec-

2. T

[1]

[2]

ifications.

is the “instant on” case temperature.

A

Static Discharge Voltage............................................>2001V

(per MIL-STD-883, Method 3015)

7C291A-35
7C292A-35

7C293A-35
7C291AL-35
7C292AL-35
7C293AL-35

7C291A-50
7C292A-50

7C293A-50
7C291AL-50
7C292AL-50
7C293AL-50

Ambient

Temperature V

−40°C to + 85°C 5V ±10%

−55°C to + 125°C 5V ±10%

CC

2

CY7C291A

CY7C292A/CY7C293A

7C291A-25
7C292A-25
7C293A-25

7C291AL-25
7C292AL-25
7C293AL-25

Electrical Characteristics

Over the Operating Range

[3,4]

7C291A-20
7C292A-20
7C293A-20

Parameter Description T est Conditions Min. Max. Min. Max. Min. Max. Unit

V

OH

V

OL

V

IH

V

IL

I

IX

V

CD

I

OZ

I

OS

I

CC

Output HIGH Voltage VCC = Min., IOH = −4.0 mA 2.4 2.4 2.4 V
Output LOW Voltage VCC = Min., IOL = 16.0 mA 0.4 0.4 0.4 V
Input HIGH Voltage Guaranteed Input Logical

HIGH Vo ltage for All Inputs

Input LOW Voltage Guaranteed Input Logical

2.0 V

CC

2.0 V

CC

2.0 V

CC

0.8 0.8 0.8 V

LOW Voltage for All Inputs

Input Load Current GND < VIN < V

CC

−10 +10 −10 +10 −10 +10 µA
Input Diode Clamp Voltage Note 4
Output Leakage Current GND < V

Output Disabled

Output Short Circuit
Current

[5]

VCC Operating Supply
Current

VCC = Max., V

VCC = Max.,
I

= 0 mA

OUT

OUT

< VCC,

= GND −20 −90 −20 −90 −20 −90 mA

OUT

−10 +10 −10 +10 −10 +10 µA

Com’l 120 90 60 mA
Mil 120

V

I

SB

V

PP

I

PP

V

IHP

V

ILP

Notes:

3. See the last page of this specification for Group A subgroup testing information.

4. See the “Introduction to CMOS PROMs” section of the Cypress Data Book for general information on testing.

5. For test purposes, not more than one output at a time should be shorted. Short circuit test duration should not exceed 30 seconds.

Standby Supply Current
(7C293A Only)

VCC = Max.,

= V

CS

1

IH

Com’l 40 30 30 mA

Mil 40
Programming Supp ly Voltage 12 13 12 13 12 13 V
Programming Supply Current 50 50 50 mA
Input HIGH Programm in g

3.0 3.0 3.0 V

Voltage
Input LOW Progr a mm in g

0.4 0.4 0.4 V

Voltage

3

CY7C291A

CY7C292A/CY7C293A

7C291A-35, 50
7C292A-35, 50
7C293A-35, 50

Electrical Characteristics

Over the Operating Range

[3,4]

(continued)

7C291AL-35, 50
7C292AL-35, 50
7C293AL-35, 50

Parameter Description Test Conditions Min. Max. Min. Max. Unit

V

OH

V

OL

V

IH

V

IL

I

IX

V

CD

I

OZ

I

OS

I

CC

I

SB

Output HIGH Voltage VCC = Min., IOH = −4.0 mA 2.4 2.4 V
Output LOW Voltage VCC = Min., IOL = 16.0 mA 0.4 0.4 V
Input HIGH Voltage Guaranteed Input Logical

2.0 2.0 V

HIGH Vo ltage for All Inputs

Input LOW Voltage Guaranteed Input Logical

0.8 0.8 V

LOW Voltage for All Inputs

Input Load Current GND < VIN < V

CC

−10 +10 −10 +10 µA
Input Diode Clamp Voltage Note 4
Output Leakage Current GND < V

Output Disabled

Output Short Circuit Current

[5]

VCC = Max., V

VCC Operating Supply Current VCC = Max.,

VIN = 2.0V

=0 mA

I

OUT

Standby Supply Current
(7C293A Only)

VCC = Max.,

=V

CS

1

OUT

< VCC,

= GND −20 −90 −20 −90 mA

OUT

−10 +10 −10 +10 µA

Commercial 60 90 mA
Military 90

Commercial 30 30 mA

IH

Military 40

V

PP

I

PP

V

IHP

V

ILP

Capacitance

Parameter Description Test Conditions Max. Unit

C

IN

C

OUT

Programming Supply Voltage 12 13 12 13 V
Programming Supply Current 50 50 mA
Input HIGH Programm in g Voltage 3.0 3.0 V
Input LOW Programming Voltage 0.4 0.4 V

[4]

Input Capacitance TA = 25°C, f = 1 MHz,

V

= 5.0V

Output Capacitance 10 pF

CC

10 pF

4

CY7C291A

AC Test Loads and Waveforms

Ω

5V

OUTPUT

30pF

INCLUDING

JIG AND

SCOPE

R1250

R2
167

Ω

[4]

5V

OUTPUT

5pF

INCLUDING

JIG AND

SCOPE

(a) NormalLoad (b) HighZ Load

Equivalent to: THÉ VENINEQUIVALENT

Ω

100

V

CC

SUPPLY

CURRENT

−

A

A

0

10

ADDRESS

OUTPUT 2.0V

Ω

R1250

3.0V

R2

Ω

167

C291A-4 C291A-5

C291A-6

t

PD

50% 50%

GND

<5ns <5ns

t

PU

CY7C292A/CY7C293A

ALL INPUT PULSES

90%

10%

90%

10%

−

CS

CS

2

3

CS

1

t

AA

O

-O

0

7

Switching Characteristics

Over the Operating Range

t

HZCS

[3, 4]

7C291A-20
7C292A-20
7C293A-20

7C291A-25
7C292A-25

7C293A-25
7C291AL-25
7C292AL-25
7C293AL-25

t

ACS

7C291A-35
7C292A-35

7C293A-35
7C291AL-35
7C292AL-35
7C293AL-35

C291A-7

7C291A-50
7C292A-50

7C293A-50
7C291AL-50
7C292AL-50
7C293AL-50

Parameter Description Min. Max. Min. Max. Min. Max. Min. Max. Unit

t

AA

t

HZCS1

t

ACS1

t

HZCS2

t

ACS2

t

PU

t

PD

Address to Output Valid 20 25 35 50 ns
Chip Select Inactive to High Z 15 15 20 20 ns
Chip Select Active to Output Valid 15 15 20 20 ns
Chip Select Inactive to High Z

(7C293A CS
Chip Select Active to Output Valid

(7C293A CS

Only)

1

Only)

1

[6]

[6]

Chip Select Active to Power-Up
(7C293A CS

Only)

1

Chip Select Inactive to Power-Down
(7C293A CS

Only)

1

22 27 35 45 ns

22 27 35 45 ns

0 0 0 0 ns

22 27 35 45 ns

5