Datasheet > 27C256_04

27C256_04

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
美国微芯 - MICROCHIP		可编程只读存储器电动程控只读存储器
页数	文件大小	规格书
10页	92K
描述
256K (32K x 8) CMOS EPROM

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27C256_04 数据手册

27C256

TABLE 1-1:

Name

PIN FUNCTION TABLE

Function

1.0

ELECTRICAL CHARACTERISTICS

1.1

Maximum Ratings*

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

A0-A14

Address Inputs

Chip Enable

VPP voltage w.r.t. VSS during

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

Output Enable

Programming Voltage

Data Output

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

VPP

O0 - O7

VCC

+5V Power Supply

Ground

*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.

VSS

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:

Tamb = 0°C to +70°C

Tamb = -40°C to +85°C

Tamb = -40°C to +125°C

Extended (Automotive):

Parameter

Part*

Status

Symbol

Min.

Max. Units

Conditions

Input Voltages

all

Logic "1"

Logic "0"

VIH

VIL

2.0

-0.5

VCC+1

0.8

Input Leakage

all

—

ILI

-10

2.4

µA VIN = 0 to VCC

Output Voltages

Logic "1"

Logic "0"

VOH

VOL

IOH = -400 µA

IOL = 2.1 mA

0.45

Output Leakage

all

—

ILO

-10

—

µA VOUT = 0V to VCC

Input Capacitance

CIN

pF VIN = 0V; Tamb = 25°C;

f = 1 MHz

Output Capacitance

all

—

COUT

—

pF VOUT = 0V; Tamb = 25°C;

f = 1 MHz

Power Supply Current,

Active

I,E

TTL input

ICC1

ICC2

—

mA VCC = 5.5V; VPP = VCC

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,

Standby

I, E

all

TTL input

CMOS input

ICC(S)

—

100

µA CE = VCC ± 0.2V

IPP Read Current

VPP Read Voltage

all

Read Mode

IPP

VPP

100

VCC-0.7 VCC

µA VPP = 5.5V

* 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.

123 4 5 6 7...10

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