EM MICROELECTRONIC
- MARIN SA
EM4205-EM4305
512 bit Read/Write Multi-purpose
Contactless Identification Device
Description
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:
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.
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.
The IC contains a factory programmed 32 bit unique
identifier number (UID).
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
Two data encodings: Manchester and Bi-phase
Multi-purpose data rate: 8, 16, 32, 40 and 64 RF
clocks
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 +85C 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
Applications
Animal Identification according to ISO FDX-B
Pigeon races standard
Waste management standard (BDE)
Access Control
Industrial
Typical Operating Configuration
C1
L
C2
EM4305
Figure 1
Copyright
2013,
EM Microelectronic-Marin SA
4205-4305-DS-01.doc, Version 4.0, 22-Oct-13
1
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EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
