Cypress Semiconductor CY7C291A Manuel utilisateur

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% 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 CS2and CS3. The contents

of the memory location addressed by the address line (A0−

A10) will become available on the output lines (O0−O7).

LogicBlock Diagram Pin Configurations

C291A-1

C291A-2 C291A-3

PROGRAM-

MABLE

ARRAY

MULTI-

PLEXER

GND

11 14

VCC

A10

CS1

O212 13

CS3

CS2

321 27

1314151617

1112 19

GND A6

O018

A10

CS1

CS2

A1CS3

CS1

CS2

CS3

POWER

DOWN

7C293A Window available on

7C291A and 7C293A

only.

DIP LCC/PLCC (Opaque Only)

Top View Top View

ADDRESS

DECODER

A10

COLUMN

ADDRESS

ROW

ADDRESS

7C291A

7C292A

7C293A 7C291A

7C293A

CY7C291A

CY7C292A/CY7C293A

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

Selection Guide

7C291A-20

7C292A-20

7C293A-20

7C291A-25

7C292A-25

7C293A-25

7C291AL-25

7C292AL-25

7C293AL-25

7C291A-35

7C292A-35

7C293A-35

7C291AL-35

7C292AL-35

7C293AL-35

7C291A-50

7C292A-50

7C293A-50

7C291AL-50

7C292AL-50

7C293AL-50

Maximum Access Time (ns) 20 25 35 50

Maximum Operating

Current (mA) Standard Commercial 120 90 90 90

Military 120 90 90

LCommercial 60 60 60

Standby Current (mA)

7C293A Only Commercial 40 30 30 30

Military 40 40 40

Operating Range

Range Ambient

Temperature VCC

Commercial 0°C to + 70°C 5V ±10%

Industrial[1] −40°C to + 85°C 5V ±10%

Military[2] −55°C to + 125°C 5V ±10%

Notes:

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

ifications.

2. TAis the “instant on”case temperature.

CY7C291A

CY7C292A/CY7C293A

Electrical Characteristics Over the Operating Range[3,4]

7C291A-20

7C292A-20

7C293A-20

7C291A-25

7C292A-25

7C293A-25

7C291AL-25

7C292AL-25

7C293AL-25

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

VOH Output HIGH Voltage VCC = Min., IOH = −4.0 mA 2.4 2.4 2.4 V

VOL Output LOW Voltage VCC = Min., IOL = 16.0 mA 0.4 0.4 0.4 V

VIH Input HIGH Voltage Guaranteed Input Logical

HIGH Voltage for All Inputs 2.0 VCC 2.0 VCC 2.0 VCC V

VIL Input LOW Voltage Guaranteed Input Logical

LOW Voltage for All Inputs 0.8 0.8 0.8 V

IIX Input Load Current GND <VIN < VCC −10 +10 −10 +10 −10 +10 µA

VCD Input Diode Clamp Voltage Note 4

IOZ Output Leakage Current GND <VOUT < VCC,

Output Disabled −10 +10 −10 +10 −10 +10 µA

IOS Output Short Circuit

Current[5] VCC = Max., VOUT = GND −20 −90 −20 −90 −20 −90 mA

ICC VCC Operating Supply

Current VCC = Max.,

IOUT = 0 mA Com’l120 90 60 mA

Mil 120

ISB Standby Supply Current

(7C293A Only) VCC = Max.,

CS1= VIH Com’l40 30 30 mA

Mil 40

VPP Programming Supply Voltage 12 13 12 13 12 13 V

IPP Programming Supply Current 50 50 50 mA

VIHP Input HIGH Programming

Voltage 3.0 3.0 3.0 V

VILP Input LOW Programming

Voltage 0.4 0.4 0.4 V

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.

CY7C291A

CY7C292A/CY7C293A

Electrical Characteristics Over the Operating Range[3,4] (continued)

7C291AL-35, 50

7C292AL-35, 50

7C293AL-35, 50

7C291A-35, 50

7C292A-35, 50

7C293A-35, 50

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

VOH Output HIGH Voltage VCC = Min., IOH = −4.0 mA 2.4 2.4 V

VOL Output LOW Voltage VCC = Min., IOL = 16.0 mA 0.4 0.4 V

VIH Input HIGH Voltage Guaranteed Input Logical

HIGH Voltage for All Inputs 2.0 2.0 V

VIL Input LOW Voltage Guaranteed Input Logical

LOW Voltage for All Inputs 0.8 0.8 V

IIX Input Load Current GND <VIN < VCC −10 +10 −10 +10 µA

VCD Input Diode Clamp Voltage Note 4

IOZ Output Leakage Current GND <VOUT < VCC,

Output Disabled −10 +10 −10 +10 µA

IOS Output Short Circuit Current[5] VCC = Max., VOUT = GND −20 −90 −20 −90 mA

ICC VCC Operating Supply Current VCC = Max.,

VIN = 2.0V

IOUT=0 mA

Commercial 60 90 mA

Military 90

ISB Standby Supply Current

(7C293A Only) VCC = Max.,

CS1=VIH Commercial 30 30 mA

Military 40

VPP Programming Supply Voltage 12 13 12 13 V

IPP Programming Supply Current 50 50 mA

VIHP Input HIGH Programming Voltage 3.0 3.0 V

VILP Input LOW Programming Voltage 0.4 0.4 V

Capacitance[4]

Parameter Description Test Conditions Max. Unit

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

VCC = 5.0V 10 pF

COUT Output Capacitance 10 pF

CY7C291A

CY7C292A/CY7C293A

AC Test Loads and Waveforms[4]

tPU

tAA tHZCS tACS

50% 50%

tPD

3.0V

OUTPUT

R1250Ω

167Ω

30pF

INCLUDING

JIG AND

SCOPE

GND

90%

10%

90%

10%

<5ns <5ns

OUTPUT

5pF

INCLUDING

JIG AND

SCOPE

(a) NormalLoad (b) HighZ Load

OUTPUT 2.0V

Equivalent to: THÉVENINEQUIVALENT

C291A-4 C291A-5

100ΩC291A-6

R1250Ω

167Ω

ALL INPUT PULSES

CS2−CS3

CS1

VCC

SUPPLY

CURRENT

A0−A10

ADDRESS

O0-O

C291A-7

Switching Characteristics Over the Operating Range[3, 4]

7C291A-20

7C292A-20

7C293A-20

7C291A-25

7C292A-25

7C293A-25

7C291AL-25

7C292AL-25

7C293AL-25

7C291A-35

7C292A-35

7C293A-35

7C291AL-35

7C292AL-35

7C293AL-35

7C291A-50

7C292A-50

7C293A-50

7C291AL-50

7C292AL-50

7C293AL-50

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

tAA Address to Output Valid 20 25 35 50 ns

tHZCS1 Chip Select Inactive to High Z 15 15 20 20 ns

tACS1 Chip Select Active to Output Valid 15 15 20 20 ns

tHZCS2 Chip Select Inactive to High Z

(7C293A CS1Only)[6] 22 27 35 45 ns

tACS2 Chip Select Active to Output Valid

(7C293A CS1Only)[6] 22 27 35 45 ns

tPU Chip Select Active to Power-Up

(7C293A CS1Only) 0 0 0 0 ns

tPD Chip Select Inactive to Power-Down

(7C293A CS1Only) 22 27 35 45 ns

CY7C291A

CY7C292A/CY7C293A

Erasure Characteristics

Wavelengths of light less than 4000 Angstroms begin to erase

these PROMs. For this reason, an opaque label should be

placed over the window if the PROM is exposed to sunlight or

fluorescent lighting for extended periods of time.

The recommended dose of ultraviolet light for erasure is a

wavelength of 2537 Angstroms for a minimum dose (UV inten-

sity x exposure time) of 25 Wsec/cm2. For an ultraviolet lamp

with a 12 mW/cm2power rating, the exposure time would be

approximately 35 minutes.

These PROMs need to be within 1 inch of the lamp during

erasure. Permanent damage may result if the PROM is ex-

posed tohigh-intensity UV light foran extended period of time.

7258 Wsec/cm2is the recommended maximum dosage.

Programming Information

Programming support is available from Cypress as well as

from a number of third-party software vendors. For detailed

programming information, including a listing of software pack-

ages, please see the PROM Programming Informationlocated

at the end of this section. Programming algorithms can be ob-

tained from any Cypress representative.

Notes:

6. tHZCS2 and tACS2 refer to 7C293A CS1only.

Switching Characteristics Over the Operating Range[3, 4]

7C291A-20

7C292A-20

7C293A-20

7C291A-25

7C292A-25

7C293A-25

7C291AL-25

7C292AL-25

7C293AL-25

7C291A-35

7C292A-35

7C293A-35

7C291AL-35

7C292AL-35

7C293AL-35

7C291A-50

7C292A-50

7C293A-50

7C291AL-50

7C292AL-50

7C293AL-50

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

Table 1. Mode Selection

Pin Function[7]

Read or Output Disable A10 −A0CS3CS2CS1O7−O0

Mode Other A10 −A0PGM VFY VPP D7−D0

Read A10 −A0VIH VIH VIL O7−O0

Output Disable[8] A10 −A0X X VIH High Z

Output Disable A10 −A0X VIL XHigh Z

Output Disable A10 −A0VIL X X High Z

Program A10 −A0VILP VIHP VPP D7−D0

Program Verify A10 −A0VIHP VILP VPP O7−O0

Program Inhibit A10 −A0VIHP VIHP VPP High Z

Intelligent Program A10 −A0VILP VIHP VPP D7−D0

Blank Check Zeros A10 −A0VIHP VILP VPP Zeros

Notes:

7. X = “don’t care”but not to exceed VCC +5%.

8. The power-down mode for the CY7C293A is activated by deselecting CS1.

CY7C291A

CY7C292A/CY7C293A

Figure 1. Programming Pinouts

C291A-8 C291A-9

GND

VCC

A10

VPP

VFY

PGM

321 27

1314151617

1112 19

GND A6

D018

A10

VPP

VFY

PGM

DIP LCC/PLCC (Opaque Only)

Top View Top View

7C291A

7C292A

7C293A

Typical DC and AC Characteristics

1.4

1.6

1.0

0.8

4.0 4.5 5.0 5.5 6.0 −55 25 125

1.2

1.1

1.2

1.0

0.8

0.6

4.0 4.5 5.0 5.5 6.0

NORMALIZED ACCESS TIME

SUPPLY VOLTAGE (V)

NORMALIZED SUPPLY CURRENT

vs. SUPPLY VOLTAGE NORMALIZED SUPPLY CURRENT

vs. AMBIENT TEMPERATURE

AMBIENT TEMPERATURE (°C) SUPPLY VOLTAGE (V)

NORMALIZED ACCESS TIME

vs.SUPPLY VOLTAGE

0.6

1.2 1.0

0.9

0.8

NORMALIZED I

TA=25°C

0.4

TA=25°C

f= f

MAX

C291A-10

1.6

1.4

1.2

1.0

0.8

−55 125

NORMALIZED ACCESS TIME

AMBIENT TEMPERATURE(°C)

NORMALIZED ACCESS TIME

vs.TEMPERATURE

0.6

0 1.0 2.0 3.0

OUTPUT SOURCE CURRENT (mA)

OUTPUT VOLTAGE (V)

30.0

25.0

20.0

15.0

10.0

5.0

0 200 400 600 800

DELTA t (ns)

CAPACITANCE (pF)

TYPICAL ACCESS TIME CHANGE

vs.OUTPUT LOADING

4.0 0.0 1000

VCC =4.5V

TA=25°C

25 0

OUTPUT SOURCE CURRENT

vs.VOLTAGE

CY7C291A

CY7C292A/CY7C293A

Typical DC and AC Characteristics

150

175

125

0.0 1.0 2.0 3.0

OUTPUT SINK CURRENT (mA)

100

OUTPUT VOLTAGE (V)

OUTPUT SINK CURRENT

vs.OUTPUT VOLTAGE

VCC =5.0V

TA=25°C

4.0

C291A-11

1.00

1.02

0.98

0.94

0.92

0.90

025 5075

100

0.88

0.96

ICC vs.CYCLEPERIOD

CYCLEPERIOD (ns)

NORMALIZED I

VCC =5.5V

TA=25°C

Ordering Information[9]

Speed

(ns) ICC

(mA) Ordering Code Package

Name Package Type Operating

Range

20 120 CY7C291A-20JC J64 28-Lead Plastic Leaded Chip Carrier Commercial

CY7C291A-20PC P13 24-Lead (300-Mil) Molded DIP

CY7C291A-20SC S13 24-Lead Molded SOIC

CY7C291A-20WC W14 24-Lead (300-Mil) Windowed CerDIP

25 60 CY7C291AL-25JC J64 28-Lead Plastic Leaded Chip Carrier Commercial

CY7C291AL-25PC P13 24-Lead (300-Mil) Molded DIP

CY7C291AL-25WC W14 24-Lead (300-Mil) Windowed CerDIP

90 CY7C291A-25JC J64 28-Lead Plastic Leaded Chip Carrier

CY7C291A-25PC P13 24-Lead (300-Mil) Molded DIP

CY7C291A-25SC S13 24-Lead Molded SOIC

CY7C291A-25WC W14 24-Lead (300-Mil) Windowed CerDIP

120 CY7C291A-25DMB D14 24-Lead (300-Mil) CerDIP Military

CY7C291A-25LMB L64 28-Square Leadless Chip Carrier

CY7C291A-25QMB Q64 28-Pin Windowed Leadless Chip Carrier

CY7C291A-25TMB T73 24-Lead Windowed Cerpack

CY7C291A-25WMB W14 24-Lead (300-Mil) Windowed CerDIP

30 120 CY7C291A-30DMB D14 24-Lead (300-Mil) CerDIP Military

CY7C291A-30LMB L64 28-Square Leadless Chip Carrier

CY7C291A-30QMB Q64 28-Pin Windowed Leadless Chip Carrier

CY7C291A-30TMB T73 24-Lead Windowed Cerpack

CY7C291A-30WMB W14 24-Lead (300-Mil) Windowed CerDIP

35 60 CY7C291AL-35JC J64 28-Lead Plastic Leaded Chip Carrier Commercial

CY7C291A

CY7C292A/CY7C293A

CY7C291AL-35PC P13 24-Lead (300-Mil) Molded DIP

CY7C291AL-35WC W14 24-Lead (300-Mil) Windowed CerDIP

90 CY7C291A-35SC S13 24-Lead Molded SOIC Commercial

CY7C291A-35PC P13 24-Lead (300-Mil) Molded DIP

CY7C291A-35WC W14 24-Lead (300-Mil) Windowed CerDIP

120 CY7C291A-35DMB D14 24-Lead (300-Mil) CerDIP Military

CY7C291A-35LMB L64 28-Square Leadless Chip Carrier

CY7C291A-35QMB Q64 28-Pin Windowed Leadless Chip Carrier

CY7C291A-35TMB T73 24-Lead Windowed Cerpack

CY7C291A-35WMB W14 24-Lead (300-Mil) Windowed CerDIP

Notes:

9. Most of these products are available in industrial temperature range. Contact a Cypress representative for specifications and product

availability.

Ordering Information[9] (Continued)

Speed

(ns) ICC

(mA) Ordering Code Package

Name Package Type Operating

Range

CY7C291A

CY7C292A/CY7C293A

50 60 CY7C291AL-50JC J64 28-Lead Plastic Leaded Chip Carrier Commercial

CY7C291AL-50PC P13 24-Lead (300-Mil) Molded DIP

CY7C291AL-50WC W14 24-Lead (300-Mil) Windowed CerDIP

90 CY7C291A-50SC S13 24-Lead Molded SOIC Commercial

CY7C291A-50PC P13 24-Lead (300-Mil) Molded DIP

CY7C291A-50WC W14 24-Lead (300-Mil) Windowed CerDIP

90 CY7C291A-50DMB D14 24-Lead (300-Mil) CerDIP Military

CY7C291A-50LMB L64 28-Square Leadless Chip Carrier

CY7C291A-50QMB Q64 28-Pin Windowed Leadless Chip Carrier

CY7C291A-50TMB T73 24-Lead Windowed Cerpack

CY7C291A-50WMB W14 24-Lead (300-Mil) Windowed CerDIP

20 120 CY7C292A-20DC D12 24-Lead (600-Mil) CerDIP Commercial

CY7C292A-20PC P11 24-Lead (600-Mil) Molded DIP

25 120 CY7C292A-25DC D12 24-Lead (600-Mil) CerDIP Commercial

CY7C292A-25PC P11 24-Lead (600-Mil) Molded DIP

CY7C292A-25DMB D12 24-Lead (600-Mil) CerDIP Military

30 120 CY7C292A-30DMB D12 24-Lead (600-Mil) CerDIP Military

35 60 CY7C292AL-35PC P11 24-Lead (600-Mil) Molded DIP Commercial

90 CY7C292A-35DC D12 24-Lead (600-Mil) CerDIP Commercial

CY7C292A-35PC P11 24-Lead (600-Mil) Molded DIP

120 CY7C292A-35DMB D12 24-Lead (600-Mil) CerDIP Military

50 60 CY7C292AL-50PC P11 24-Lead (600-Mil) Molded DIP Commercial

90 CY7C292A-50DC D12 24-Lead (600-Mil) CerDIP Commercial

CY7C292A-50PC P11 24-Lead (600-Mil) Molded DIP

120 CY7C292A-50DMB D12 24-Lead (600-Mil) CerDIP Military

20 120 CY7C293A-20PC P13 24-Lead (300-Mil) Molded DIP Commercial

CY7C293A-20WC W14 24-Lead (300-Mil) Windowed CerDIP

25 120 CY7C293A-25PC P13 24-Lead (300-Mil) Molded DIP Commercial

CY7C293A-25WC W14 24-Lead (300-Mil) Windowed CerDIP

CY7C293A-25DMB D14 24-Lead (300-Mil) CerDIP Military

CY7C293A-25LMB L64 28-Square Leadless Chip Carrier

CY7C293A-25QMB Q64 28-Pin Windowed Leadless Chip Carrier

CY7C293A-25WMB W14 24-Lead (300-Mil) Windowed CerDIP

Ordering Information[9] (Continued)

Speed

(ns) ICC

(mA) Ordering Code Package

Name Package Type Operating

Range

Ce manuel convient aux modèles suivants

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