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27C512A

27C512A / 512K (64K x 8) CMOS EPROM / PLCC, DIP, SOIC Package

Microchip Technology 

27C512A

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 +14V

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-A15

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

all Logic "1"

VIH

2.0 VCC+1 V

Logic "0"

VIL

-0.5

0.8

V

Input Leakage

all

ILI

-10

10

µA VIN = 0 to VCC

Output Voltages

all Logic "1"

VOH

Logic "0"

VOL

2.4

V IOH = - 400 µA

0.45

V IOL = 2.1 mA

Output Leakage

all

—

ILO

-10

10

µA VOUT = 0V to VCC

Input Capacitance

all

—

CIN

—

6

pF VIN = 0V; Tamb = 25°C;

f = 1 MHz

Output Capacitance

all

—

COUT

—

12

pF VOUT = 0V; Tamb = 25°C;

f = 1 MHz

Power Supply Current,

C TTL input

ICC

Active

I, E TTL input

ICC

—

25

mA VCC = 5.5V

—

35

mA f = 1 MHz;

OE/VPP = CE = VIL;

IOUT = 0 mA;

VIL = -0.1 to 0.8V;

VIH = 2.0 to VCC;

Note 1

Power Supply Current,

Standby

C TTL input ICC(S)TLL

—

I, E TTL input ICC(S)TLL

—

all CMOS input ICC(S)CMOS —

1

mA

2

mA

30

µA CE = Vcc±0.2V

* 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.

DS11173E-page 2

© 1996 Microchip Technology Inc.

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