Datasheet > EM4205

EM4205

更新时间： 2024-09-25 12:56:43

品牌	Logo	应用领域
EMMICRO		/
页数	文件大小	规格书
18页	747K
描述
512 bit Read/Write Multi-purpose Contactless Identification Device

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EM4205 数据手册

EM MICROELECTRONIC - MARIN SA

EM4205-EM4305

512 bit Read/Write Multi-purpose

Contactless Identification Device

Description

Features



512 bit EEPROM organized in 16 words of 32 bit

32 bit unique identifier (UID)

32 bit Password read and write protection

ISO 11784 / 11785 Standard Compliant

Lock feature converts EEPROM words into Read

Only

EM4205/4305 is a CMOS integrated circuit intended for

use in electronic Read/Write RF transponders. It is

suitable for low cost solutions like animal tagging

applications. The IC communication protocol is

compatible with the EM4469/4569 family.

The main difference between the EM4205 and EM4305

is that:



Two data encodings: Manchester and Bi-phase

Multi-purpose data rate: 8, 16, 32, 40 and 64 RF

clocks



EM4305 are bumped with enlarged pads for the two

coil inputs. The enlarged bumped pads of the

EM4305 transponder are intended for direct

antenna connection avoiding the need of a module.



Reader Talk First feature

Compatible with EM4469/EM4569 communication

protocol



100 to 150 kHz frequency range

On-chip rectifier and voltage limiter

No external supply buffer capacitor needed

-40°C to +85C temperature range

Very low power consumption

Enlarged bumped pads (200 m x 400 m) for direct

connection of coil (EM4305)

EM4205: 2 resonant capacitor versions 210pF or

250pF selectable by mask option. The resonant

capacitor can be trimmed, at factory level, to offer

accuracy on the tolerance of 3%.

EM4305: 3 resonant capacitor versions 210pF,

250pF or 330pF selectable by mask option

Available in plastic extremely thin small outline

package; 2 terminals; body 1.1 * 1.4 * 0.46 mm



EM4305 offers a 330pF resonant capacitor version

The IC is powered by picking up energy from a

continuous 125 kHz magnetic field via an external coil,

which together with the integrated capacitor form a

resonant circuit. The IC reads out data from its internal

EEPROM and sends it out by switching on and off a

resistive load in parallel to the coil using a large

modulation index. Commands and EEPROM data

updates can be executed by 100% AM modulation of the

125 kHz magnetic field.



The EM4205/4305 supports bi-phase and Manchester

data encodings.



The EM4205/4305 operating modes are stored in the

EEPROM configuration word. All EEPROM words can be

write-protected by setting protection bits.

Applications

The IC contains a factory programmed 32 bit unique

identifier number (UID).



Animal Identification according to ISO FDX-B

Pigeon races standard

Waste management standard (BDE)

Access Control

Industrial

Typical Operating Configuration

EM4305

Figure 1

www.emmicroelectronic.com

4205-4305-DS-01.doc, Version 4.0, 22-Oct-13

12 3 4 5 6 7...18

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