27C256-15/SO(2004) Ver la hoja de datos (PDF) - Microchip Technology

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Fabricante

27C256-15/SO
(Rev.:2004)

256K (32K x 8) CMOS EPROM

Microchip Technology 

27C256

1.0 ELECTRICAL CHARACTERISTICS

1.1 Maximum Ratings*

VCC and input voltages w.r.t. VSS ........ -0.6V to +7.25V

VPP voltage w.r.t. VSS during

programming ....................................... -0.6V to +14.0V

Voltage on A9 w.r.t. VSS ...................... -0.6V to +13.5V

Output voltage w.r.t. VSS ................-0.6V to VCC +1.0V

Storage temperature ..........................-65°C to +150°C

Ambient temp. with power applied .....-65°C to +125°C

*Notice: Stresses above those listed under “Maximum Ratings”

may cause permanent damage to the device. This is a stress rat-

ing only and functional operation of the device at those or any

other conditions above those indicated in the operation listings of

this specification is not implied. Exposure to maximum rating con-

ditions for extended periods may affect device reliability.

TABLE 1-1: PIN FUNCTION TABLE

Name

A0-A14

CE

OE

VPP

O0 - O7

VCC

VSS

NC

NU

Function

Address Inputs

Chip Enable

Output Enable

Programming Voltage

Data Output

+5V Power Supply

Ground

No Connection; No Internal Connec-

tion

Not Used; No External Connection Is

Allowed

TABLE 1-2: READ OPERATION DC CHARACTERISTICS

VCC = +5V (±10%)

Commercial:

Industrial:

Extended (Automotive):

Tamb = 0°C to +70°C

Tamb = -40°C to +85°C

Tamb = -40°C to +125°C

Parameter

Part* Status Symbol Min. Max. Units

Conditions

Input Voltages

Input Leakage

Output Voltages

Output Leakage

Input Capacitance

Output Capacitance

all Logic "1"

VIH

2.0 VCC+1 V

Logic "0"

VIL

-0.5 0.8 V

all

—

ILI

-10

10 µA VIN = 0 to VCC

all Logic "1"

VOH

2.4

V IOH = -400 µA

Logic "0"

VOL

0.45 V IOL = 2.1 mA

all

—

ILO

-10

10 µA VOUT = 0V to VCC

all

—

CIN

—

6

pF VIN = 0V; Tamb = 25°C;

f = 1 MHz

all

—

COUT

—

12 pF VOUT = 0V; Tamb = 25°C;

f = 1 MHz

Power Supply Current,

C

TTL input

ICC1

—

20 mA VCC = 5.5V; VPP = VCC

Active

I,E TTL input

ICC2

—

25 mA f = 1 MHz;

OE = CE = VIL;

IOUT = 0 mA;

VIL = -0.1 to 0.8V;

VIH = 2.0 to VCC;

Note 1

Power Supply Current,

C

TTL input ICC(S)

—

2 mA

Standby

I, E TTL input

3 mA

all CMOS input

100 µA CE = VCC ± 0.2V

IPP Read Current

VPP Read Voltage

all Read Mode

all Read Mode

IPP

100

VPP VCC-0.7 VCC

µA VPP = 5.5V

V

* Parts: C=Commercial Temperature Range; I, E=Industrial and Extended Temperature Ranges

Note 1: Typical active current increases .75 mA per MHz up to operating frequency for all temperature ranges.

DS11001N-page 2

 2004 Microchip Technology Inc.

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