DS2502+ Dallas Semiconductor, DS2502+ Datasheet

DS2502+

Manufacturer Part Number

DS2502+

Description

ADD-O MEM 1KB, TO92

Manufacturer

Dallas Semiconductor

Datasheet

1.DS2502.pdf (4 pages)

Specifications of DS2502+

Capacitance, Input

800 pF

Capacitance, Output

800 pF

Current, Operating

5 μA

Density

Interface

1-Wire

Memory Type

EPROM

Organization

1K×1

Package Type

TO-92

Temperature, Operating

-40 to +85 °C

Time, Fall

5 μs

Time, Rise

5 μs

Voltage, Input, High

2.2 V

Voltage, Input, Low

0.8 V

Voltage, Output, High

6 V

Voltage, Output, Low

0.4 V

Voltage, Supply

2.8 to 6 V

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Current page: 1 of 4
Download datasheet (682Kb)

10/21/

FEATURES

1024 bits Electrically Programmable Read

Only Memory (EPROM) communicates with

the economy of one signal plus ground

Unique, factory-lasered and tested 64-bit

registration number (8-bit family code + 48-

bit serial number + 8-bit CRC tester) assures

absolute traceability because no two parts are

alike

Built-in multidrop controller ensures

compatibility with other MicroLAN products

EPROM partitioned into four 256-bit pages

for randomly accessing packetized data

Each memory page can be permanently

write-protected to prevent tampering

Device is an “add only” memory where

additional data can be programmed into

EPROM without disturbing existing data

Architecture allows software to patch data by

superseding an old page in favor of a newly

programmed page

Reduces control, address, data, power, and

programming signals to a single data pin

Directly connects to a single port pin of a

microprocessor and communicates at up to

16.3 kbits per second

8-bit family code specifies DS2502

communications requirements to reader

Presence detector acknowledges when the

reader first applies voltage

Low cost TO-92 or 8-pin SO, SOT-23 (3-

pin), TSOC and flip chip surface mount

package

Reads over a wide voltage range of 2.8V to

6.0V from -40°C to +85°C; programs at

11.5V to 12.0V from -40°C to +50°C

1 of 22

PIN ASSIGNMENT

NOTE: The leads of TO-92 packages on tape-

and-reel are formed to approximately 100 mil

(2.54 mm) spacing. For details refer to drawing

56-G0006-003.

BOTTOM VIEW

See

1Kb Add-Only Memory

09rrd

56-G7010-001

TO-92

DS2502

2 3

for package outline.

DATA

GND

DATA

8-PIN SO (150 MIL)

GND

Flip Chip, Top View

with Laser Mark,

Contacts Not Visible.

“rrd” = Revision/Date

1 = DATA

2 = GND

TSOC PACKAGE

1 = DATA; 2, 3 = GND

“rr” = Revision

SOT-23 Package

TOP VIEW

09rr

Top View

DS2502

Related parts for DS2502+

DS2502+ Summary of contents

Page 1

FEATURES 1024 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48- bit serial number + 8-bit CRC tester) assures absolute ...

Page 2

... ORDERING INFORMATION Standard Lead-Free DS2502 DS2502+ DS2502/T&R DS2502+T&R DS2502R/T&R DS2502R+T&R DS2502P DS2502P+ DS2502P/T&R DS2502P+T&R DS2502S DS2502S+ DS2502S/T&R DS2502S+T&R DS2502X1 + Indicates lead-free compliance. DESCRIPTION The DS2502 1Kb Add-Only Memory identifies and stores relevant information about the product to which it is associated. This lot- or product-specific information can be accessed with minimal interface- for example, a single port pin of a microcontroller ...

Page 3

ABSOLUTE MAXIMUM RATINGS* Voltage on any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...

Page 4

NOTES: 1. All voltages are referenced to ground external pullup voltage. PUP 3. Input load is to ground additional reset or communication sequence cannot begin until the reset high time has expired. 5. Read data ...

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