FEDR27V852E-01-01

1Semiconductor

This version: Jan. 2001

MR27V852E

524,288Word

×
×
×
×

16Bit or 1,048,576Word

×
×
×
×

8Bit

8Word x 16-Bit or 16Word x 8-Bit Page Mode One Time PROM

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GENERAL DESCRIPTION

The MR27V852E is a 8 Mbit electrically One Time Programmable Read-Only Memory with page mode. Its
configuration can be electrically switched between 524,288-word

16-bit and 1,048,576-word

8-bit by the state

of the

BYTE pin. The MR27V852E supports high speed asynchronous read operation using a single 3.3V power

supply.

FEATURES

· 524,288-word

16-bit/1,048,576-word

8-bit electrically switchable configuration

· Page size of 8-word x 16-Bit or 16-word x 8-Bit
· +3.3 V power supply
· Access time
Random access mode 100 ns MAX
Page access mode 30 ns MAX
· Operating current 80 mA MAX
· Standby current

A MAX

· Input/Output TTL compatible
· Tri-state output
· Packages:
42-pin plastic DIP (DIP42-P-600-2.54) (Product Name : MR27V852ERA)
42-pin plastic SOJ (SOJ42-P-400-1.27) (Product Name : MR27V852EJA)

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MR27V852E

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PIN CONFIGURATION (TOP VIEW)

Pin name

Functions

D15/A1

Data output/Address input

A0 to A18

Address input

D0 to D14

Data output

Chip enable

Output enable

BYTE

Mode switch/Program power supply voltage

Power supply voltage

GND

Non connection

A10

A11

A12

A13

A14

A15

A16

BYTE

/ V

D15/A1

D14

D13

D12

A18

A17

D10

D11

42-pin DIP

42-pin SOJ

A10

A11

A12

A13

A14

A15

A16

BYTE

/ V

D15/A1

D14

D13

D12

A18

A17

D10

D11

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BLOCK DIAGRAM

FUNCTION TABLE

Mode

BYTE

D0 to D7

D8 to D14

D15/A1

Read (16-Bit)

OUT

Read (8-Bit)

OUT

HiZ

L/H

Output disable

HiZ

Standby

3.3 V

HiZ

Program

Program inhibit

HiZ

Program verify

9.75 V

4.0 V

OUT

: Don't Care (H or L)

A10

A11

A12

A13

A14

A15

A16

A17

A18

BYTE

PGM

× 8/× 16 Switch

D0 D2 D4 D6 D8 D10 D12 D14

D1 D3 D5 D7 D9 D11 D13 D15

Memory Cell Matrix

524,288 × 16-Bit or 1,048,576× 8-Bit

Multiplexer

Output Buffer

c
o

lum

c
oder

Addres

s Buf

f
er

In 8-bit output mode, these pins
are placed in a high-Z state and
pin D15 functions as the A-1
address pin.

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ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Condition

Value

Unit

Operating temperature under bias

0 to 70

°C

Storage temperature

Tstg

55 to 125

°C

Input voltage

0.5 to V

+0.5

Output voltage

0.5 to V

+0.5

Power supply voltage

0.5 to 5

Program power supply voltage

relative to V

0.5 to 11.5

Power dissipation per package

1.0

RECOMMENDED OPERATING CONDITIONS

(Ta = 0 to 70°C)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

power supply voltage

3.0

3.6

power supply voltage

0.5

+0.5

Input "H" level

2.2

+0.5

Input "L" level

= 3.0 to 3.6 V

0.5

0.6

Voltage is relative to V

: Vcc+1.5 V(Max.) when pulse width of overshoot is less than 10 ns.

: -1.5 V(Min.) when pulse width of undershoot is less than 10 ns.

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ELECTRICAL CHARACTERISTICS

DC Characteristics

= 3.3 V ±0.3 V, Ta = 0 to 70°C)

parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

Input leakage current

= 0 to V

Output leakage current

= 0 to V

CCSC

= V

power supply current

(Standby)

CCST

= V

power supply current

(Read)

CCA

= V

tc = 100 ns

power supply current

= V

Input "H" level

2.2

+0.5

Input "L" level

0.5

0.6

Output "H" level

= 2 mA

2.4

Output "L" level

= 2.1 mA

0.4

Voltage is relative to V

: Vcc+1.5 V(Max.) when pulse width of overshoot is less than 10 ns.

: -1.5 V(Min.) when pulse width of undershoot is less than 10 ns.

AC Characteristics

= 3.3 V ±0.3 V, Ta = 0 to 70°C)

Parameter

Symbol

Condition

Min.

Max.

Unit

Address cycle time

100

Address access time

ACC

= V

100

Page cycle time

Page access time

PAC

access time

= V

100

access time

= V

CHZ

= V

Output disable time

OHZ

= V

Output hold time

= V

Measurement conditions

Input signal level--------------------------------

0 V/3 V

Input timing reference level ------------------

0.8 V/2.0 V

Output load --------------------------------------

100 pF

Output timing reference level----------------

0.8 V/2.0 V

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ELECTRICAL CHARACTERISTICS (PROGRAMMING OPERATION)

DC Characteristics

(Ta = 25°C ± 5°C)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

Input leakage current

= V

+0.5 V

power supply current (Program)

PP2

= V

power supply current

Input "H" level

3.0

+0.5

Input "L" level

0.5

0.8

Output "H" level

= 400

2.4

Output "L" level

= 2.1 mA

0.45

Program voltage

9.5

9.75

10.0

power supply voltage (Program)

3.9

4.0

4.1

power supply voltage (Verify1)

CV1

2.9

3.0

3.1

power supply voltage (Verify2)

CV2

3.5

3.6

3.7

Voltage is relative to V

AC Characteristics

= 4.0 V ±0.1 V,

BYTE

= 9.75 V ±0.25 V, Ta = 25°C ±5°C)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

Address set-up time

100

set-up time

OES

Data set-up time

100

Address hold time

Data hold time

100

Output float delay time from

OHZ

100

voltage set-up time

Program pulse width

Data valid from

100

Address hold from

high

AOH

Pin Check Function

Pin Check Function is to check contact between each device-pin and each socket-lead with EPROM programmer.
Setting up address as following condition call the preprogrammed codes on device outputs.

= 3.3 V ±0.1 V,

= V

BYTE

= V

, Ta = 25°C ±5°C)

A10

A11

A12

A13

A14

A15

A16

A17

A18

DATA

FF00

00FF

Other conditions

FFFF

: VH = 8 V ± 0.25 V

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Programming/Verify Flow Chart

YES

= 3.0 V/V

= 3.0 V (Verify1)

Device Passed

Start

Last Address?

X = 0

Verify(One Word)

Last Address?

X = 2?

X = X+1

Increment Address

Program 10

Programming

Pin Check

PASS

Verify

Start

Verify

Pin Check

Bad Insertion

Device Passed

YES

PASS

= 3.6 V/V

= 3.6 V (Verify2)

Device Failed

Bad Insertion

Address = First Location

= 4.0 V

= 9.75 V

Program 10

Verify

Device Failed

= 3.0 V/V

= 3.0 V (Verify1)

Address = First Location

Increment Address

Address = First Location

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Notes for Mounting the Surface Mount Type Package

The surface mount type packages are very susceptible to heat in reflow mounting and humidity
absorbed in storage.
Therefore, before you perform reflow mounting, contact Oki's responsible sales person for the product
name, package name, pin number, package code and desired mounting conditions (reflow method,
temperature and times).

SOJ42-P-400-1.27

Mirror finish

Package material

Epoxy resin

Lead frame material

42 alloy

Pin treatment

Solder plating (

5µm)

Package weight (g)

1.86 TYP.

Rev. No./Last Revised

5/Dec. 5, 1996

(Unit: mm)

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NOTICE

The information contained herein can change without notice owing to product and/or technical improvements.
Before using the product, please make sure that the information being referred to is up-to-date.

The outline of action and examples for application circuits described herein have been chosen as an
explanation for the standard action and performance of the product. When planning to use the product, please
ensure that the external conditions are reflected in the actual circuit, assembly, and program designs.

When designing your product, please use our product below the specified maximum ratings and within the
specified operating ranges including, but not limited to, operating voltage, power dissipation, and operating
temperature.

Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation
resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or
unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified
maximum ratings or operation outside the specified operating range.

Neither indemnity against nor license of a third party's industrial and intellectual property right, etc. is
granted by us in connection with the use of the product and/or the information and drawings contained herein.
No responsibility is assumed by us for any infringement of a third party's right which may result from the use
thereof.

The products listed in this document are intended for use in general electronics equipment for commercial
applications (e.g., office automation, communication equipment, measurement equipment, consumer
electronics, etc.). These products are not authorized for use in any system or application that requires special
or enhanced quality and reliability characteristics nor in any system or application where the failure of such
system or application may result in the loss or damage of property, or death or injury to humans.
Such applications include, but are not limited to, traffic and automotive equipment, safety devices, aerospace
equipment, nuclear power control, medical equipment, and life-support systems.

Certain products in this document may need government approval before they can be exported to particular
countries. The purchaser assumes the responsibility of determining the legality of export of these products
and will take appropriate and necessary steps at their own expense for these.

No part of the contents contained herein may be reprinted or reproduced without our prior permission.

Document Outline

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: MR27V852ERA

Document Outline

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: MR27V852ERA