V4082V1ST3B EMMICRO [EM Microelectronic - MARIN SA], V4082V1ST3B Datasheet

V4082V1ST3B

Manufacturer Part Number

V4082V1ST3B

Description

Identification ROM

Manufacturer

EMMICRO [EM Microelectronic - MARIN SA]

Datasheet

1.V4082V1ST3B.pdf (7 pages)

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Description

The V4082 is a 64-bit read only memory (ROM) which

contains a unique laser engraved serial number.

data in the ROM is partitioned into three sections: An 8-

bit identifier code, a 48-bit serial number and an 8-bit

cyclical redundancy check (CRC). The serial number is

incremented in fabrication such that no two parts have the

same code.

done serially via a single data lead (and ground return)

using a single wire protocol. Power for reading is derived

from the data line itself with no need for an extra power

source. The circuit is available in SOT 223 or TO 92

package.

Typical Operating Configuration

SYSTEM

PUP

Communication for reading and writing is

Cext

EM MICROELECTRONIC -

Vcc

DATA

VSS

MOSFET

100 ohm

V4082

on chip supply

Identification ROM

Control

+ ROM

Logic

Fig. 1

The

Features

Applications

Pin Assignment

* Internally connected to pin 2

Unique 48-bit silicon serial number gives 10

combinations

Factory lasered and tested, no two parts alike

8-bit cyclic redundancy check ensures error-free reading

Presence detect indicates to the system when first

contact is made

Zero standby power required

Custom serial numbers available

Pin compatible with DS 2400, DS 2401 in TO-92 and

SOT-223

Socket identification

PCB identification

Equipment registration

TO92

Fla t Front

MARIN SA

TO -92

V4082

View

2 3

SOT-223

Name

VSS

DATA

VSS

www.emmicroelectronic.com

Function

Ground return

Serial data pin

Ground return

SO T-223

V4082

Fig. 2

Related parts for V4082V1ST3B

V4082V1ST3B Summary of contents

Page 1

EM MICROELECTRONIC - Description The V4082 is a 64-bit read only memory (ROM) which contains a unique laser engraved serial number. data in the ROM is partitioned into three sections bit identifier code, a 48-bit serial number and ...

Page 2

Absolute Maximum Ratings Parameter Symbol Voltage on Data Pin DATA Max. injected current into Idata DATA pin Storage Temperature T Power Dissipation Pw Stresses above these listed maximum ratings may cause permanent damages to the device. ...

Page 3

Timing Waveforms RESET PULSE/ PRESEN C E DETEC T tSYC RESET PULSE t RSTL 1-WIRE WRITE TIMING tSYC WRITE 1 tSYC WRITE 0 Copyright © 2004, EM Microelectronic-Marin SA IDLE STATE DRIVEN LOW BY HOST tPDH tLOW1 tSLOT tLOW0 3 ...

Page 4

READ TIMING tSYC READ 1 tSYC READ 0 1-WIRE PROTOCOL State 1: RESET (from System) State 2: COMMAND WORD (from System) State 3: TYPE IDENTIFIER (to System) State 4: SERIAL NUMBER AND CRC (to System and CRC Value) Copyright ...

Page 5

Functional Description The V4082 is a 64-bit read only memory (ROM) which contains a unique laser engraved serial number, the data in the ROM is partitioned into three sections: an 8-bit type identifier code, a 48-bit serial number and an ...

Page 6

Custom V4082 Upon special request, the V4082 is available with portions of the 48-bit serial number defined by the customer. These special parts V4082xxx. The custom 48-bit number has two specific subfields of which EM Microelectronic-Marin will assign a customer ...

Page 7

... Ordering Information When ordering, please specify the complete Part Number below Part Number Version V4082V1T03E V01 V4082V1ST3B V4082V2T03E V02 V4082V2ST3B Note : Version 01 (V01) corresponds to the standard version. Other versions might be available upon request for a minimum order quantity (Please contact EM Microelectronic at info@emmicroelectronic.com ...

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