EM MICROELECTRONIC - MARIN SA
EM4126
18000-63 / EPCTM Class-1 Generation-2 (Gen2) RFID IC
Description
Features
EM4126 is a UHF RFID IC compliant with both ISO/IEC
18000-63 (formerly known as 18000-6 Type C) and
TM
EPC Class-1 Generation-2.
The EM4126 has 224 bits of non-volatile memory (16 bit
PC Word and 208 bit UII/EPC Code) enabling the support
of ISO or EPC data structures.
EM4126 achieves a typical read sensitivity of -19 dBm at
the chip level, which translates into a typical -21 dBm
sensitivity at the tag level for a dipole-like antenna with 2
dBi gain (25us TARI, 250 kHz BLF).
ISO 18000-63 compliant
EPC Class-1 Generation-2 compliant
208-bit UII / EPC encodings are supported
32-bit Short Tag Identification (TID)
-19 dBm (-21 dBm) typical IC (tag) read sensitivity
Forward link data rates: 40 to 160 kbit/s
Return link data rates: 40 to 640 kbit/s
Support of near-field mode enabling reading e.g.
through water
Support of parallel-inductance matching for improved
matching
Extended temperature range (–40C to +85C)
EPC is a trademark of EPCglobal Inc.
Typical Operating Configuration
Open or closed dipole
Applications
Supply chain management
Tracking and tracing
Container identification
Access control
Asset control
A
VSS
EM4126
Fig. 1 Typical Operating Configuration
IC Block Diagram
A
Demodulator
Rectifier
Power
management
Logic
Modulator
EEPROM
VSS
EM4126
Fig. 2 IC Block Diagram
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4126-DS.doc, Version 3.0, 17-Dec-12
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EM4126
Table of Contents
Description ..............................................................................................................................................................1
Applications.............................................................................................................................................................1
Features ..................................................................................................................................................................1
Typical Operating Configuration .............................................................................................................................1
IC Block Diagram ....................................................................................................................................................1
Absolute Maximum Ratings ....................................................................................................................................3
Operating Conditions ..............................................................................................................................................3
Handling Procedures ..............................................................................................................................................3
Electrical Characteristics ........................................................................................................................................3
Functional Description ............................................................................................................................................4
Memory Organization .............................................................................................................................................4
Delivery State .........................................................................................................................................................5
Commands..............................................................................................................................................................5
Command Codes ................................................................................................................................................5
Custom Commands ............................................................................................................................................6
Electronic Product Code (EPC) Encoding ..............................................................................................................6
Floor Plan and Pin Description ............................................................................................................................ 10
Ordering Information ............................................................................................................................................ 11
Standard Versions & Samples: ............................................................................................................................ 11
Product Support ................................................................................................................................................... 11
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EM4126
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Unit
Storage
temperature
TSTORE
-50
125
°C
RF power at
1)
pad A
PA_ABS
30
dBm
Voltage on pad
A
VA_ABS
VSS-0.2
VSS+2.0
V
Voltage on pad
TST1, TST3
VTST_ABS
VSS-0.2
VSS+2.0
V
ESD hardness
2)
pad A
VESD_A
-1000
1000
V
ESD hardness
pad TST1,
2)
TST3
VESD_TST
Stresses above these listed maximum ratings may cause
permanent damages to the device. Exposure beyond
specified operating conditions may affect device reliability
or cause malfunction.
Operating Conditions
Parameter
Symbol
Operating
temperature
TOP
3)
PA
RF carrier frequency
fA
RF power at pad A
Min.
Max.
Unit
-40
+85
°C
20
dBm
960
MHz
860
Table 2: Operating conditions
-2000
2000
V
Note 3: IC impedance matched to antenna at read sensitivity
Handling Procedures
Table 1: Absolute maximum ratings
Note 1: IC impedance matched to antenna at read sensitivity
Note 2: Human Body Model
This device has built-in protection against high static
voltages or electric fields; however, anti-static precautions
must be taken as for any other CMOS component. Unless
otherwise specified, proper operation can only occur when
all terminal voltages are kept within the voltage range.
Electrical Characteristics
Parameter
Incoming RF carrier modulation
Symbol
KM
Read sensitivity for power matching
(complex-conjugate matching)
Write sensitivity for power matching
(complex-conjugate matching)
Min.
Typ.
65
Max.
Unit
100
%
PDUT= -17dBm
T = 25°C
Input impedance (between A and VSS)
above activation threshold
Resistive load (between A and VSS)
when modulator is on
Conditions
ZA
fA = 866MHz
fA = 915MHz
fA = 953MHz
1mA into pad A
T = 25°C
RA_ON
25 – 76
22 – 261
20 – 251
50
PRD
T = 25°C
fA=866MHz
fA=915MHz
fA = 953MHz
-19
4)
-19
4)
-19
dBm
dBm
dBm
PWR
T = 25°C
fA=866MHz
fA=915MHz
fA = 953MHz
-8
-8
-8
dBm
dBm
dBm
4)
Table 3: Electrical characteristics
Note 4: 25 us TARI, 250 kHz BLF
Timing Characteristics
Parameter
Symbol
Erase / write endurance
TCYC
Retention
TRET
Conditions
TOP = 55ºC
Min.
Typ.
Max.
Unit
10k
Cycles
10
Years
Table 4: Timing characteristics
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EM4126
Functional Description
The EM4126 is used in passive UHF transponder applications operating at 860 MHz - 960 MHz. It is powered by the RF
energy transmitted by the reader, which is received and rectified to generate a supply voltage for the IC. This device is in
TM
full compliance with ISO/IEC 18000-63 and EPC
Class-1 Generation-2 specifications according to the following
documents:
"ISO/IEC 18000-63:2012 Information technology – Radio frequency identification for item management – Part 63:
Parameters for air interface communications at 860 MHz to 960 MHz Type C”
"EPC Radio-Frequency Identity Protocols, Class-1 Generation-2 UHF RFID, Protocol for Communications at
860 MHz - 960 MHz, Version 1.2” from EPCglobal Inc.
"EPCglobal Tag Data Standards, Version 1.6" from EPCglobal Inc.
Memory Organization
EM4126 memory is allocated to two memory banks: TID and UII/EPC.
Memory name
Memory
bank
TID
102
UII/EPC
012
Word
Address
0
1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Contents
Short TID
Format
CRC-16
PC
UII/EPC
Memory
type
ROM
RAM
NVM
Table 5: Memory map.
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EM4126
Word
0
Bits
(MSB first)
15 14 13 12 11 10 9
8
1
7
6
5
4
3
2
1
0 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
ISO/IEC 15963
Allocation Class
Tag mask-designer identifier for
EM
Tag model number
111000102 (ROM)
0000000010112 (ROM)
000011000xxx2 (ROM)
where xxx is customer version
and 000 is standard product
Content
0
Table 6: TID memory
Delivery State
The delivery state has the following default product configuration:
UII/EPC memory is unlocked with a default 96-bit UII/EPC Code value 0000'0000'0000'0000'nnnn'nnnnh
where nnnn’nnnn is the 32-bit IC serial number.
Commands
Three sets of commands are defined:
Mandatory
Optional
Custom
Command Codes
The table below shows all implemented commands in EM4126. For the description of all mandatory and optional
commands, please refer to the EPCglobal Class-1 Generation-2 standard. More detailed information on custom commands
is given below.
Command code
Type
'00'
'01'
'1000'
'1001'
'1010'
'11000000'
'11000001'
'11000010'
'11000011'
'11000100'
'11000101'
'11000110'
‘11100000 00000000’
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Mandatory
Optional
Custom
Function
QueryRep
ACK
Query
QueryAdjust
Select
NAK
Req_RN
Read
Write
Kill
Lock
Access
GetUID
Table 7: Command codes
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EM4126
Custom Commands
GetUID
GetUID
Command code
RN
16
16
11100000 00000000
Prior RN16 or handle
Table 8: GetUID Command
# of bits
Description
The custom command GetUID is implemented as in Table 9. It allows an interrogator to read the tag's 64-bit TID / UID with
a single command. A tag in Reply, Acknowledged, Open or Secured state backscatters {'0', TID / UID, RN16, CRC-16}
upon a GetUID command with a valid RN16 or handle (see Table 10). The state transition and link timing is the same as for
the ACK command. The tag reply is analogous to the tag reply upon a Read command. A link timing example is shown in
Figure 3.
# of bits
Description
Header
1
0
Select
CW
UID
32
TID
Query
RN
16
RN16 (prior RN16 or handle)
Table 9: GetUID backscatter format
GetUID
CW
T1
Next
command
CW
’0'+UID+RN16+CRC-16
RN16
T4
CRC-16
16
CRC-16('0'+TID+RN16)
T2
T1
T2
Fig. 3: GetUID backscatter timing diagram
Electronic Product Code (EPC) Encoding
A common use for the EM4126 is to support item level tagging in retail applications and corresponds to the use
of bar codes to uniquely identify a product. A bar code format (e.g. EAN-13) is used to encode a Universal
Product Code (UPC) representing the Global Trade Item Number (GTIN) for the product. The common EAN-13
format has four components:
The GS1 Prefix, the first three digits, usually identifying the national GS1 Member Organization to
which the manufacturer is registered.
The Company Number, consisting of three to seven digits depending on number of EAN-13’s required
by the manufacturer to identify different product lines.
The Item Reference, consisting of two to six digits.
The Check Digit, a single checksum digit.
The GS1 Company Prefix is the GS1 Prefix concatenated with the Company Number and indicates the
manufacturer. The Item Reference indicates the product. The complete number is used as a reference key to
look up information about the product in a database.
EPC encoding supports GTIN’s and also provides the means to assign a unique identity to an instance of a
trade item using serialization. This is done using the Serialized Global Trade Item Number (SGTIN) scheme
which consists of the following elements:
The GS1 Company Prefix, assigned by GS1 to a managing entity or its delegates. This is the same
as the GS1 Company Prefix digits within a GS1 GTIN and typically represents a manufacturer.
The Item Reference, assigned by the managing entity to a particular object class and typically
represents a product. The Item Reference as it appears in the EPC is derived from the GTIN by
concatenating the Indicator Digit of the GTIN (or a zero pad character, if the EPC is derived from a
GTIN-8, GTIN-12, GTIN-13, or EAN-13) and the Item Reference digits, and treating the result as a
single numeric string.
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EM4126
The Serial Number, assigned by the managing entity to an individual object. The serial number is not
part of the GTIN, but is formally a part of the SGTIN. The serial number may be either a numeric value
in the range 1 – 274,877,906,943 or an alphanumeric string consisting of 1 – 20 characters.
To construct the EPC corresponding to an EAN-13 and a serial number, first convert the corresponding GTIN to
a 14-digit number by adding one leading zero character as shown in the following example.
Start with EAN-13
EAN-13: 7611608234365
GS1 Company Prefix (manufacturer): 7611608
Item Reference (product): 23436
Check Digit: 5
Convert to GTIN
Prepend “0” indicator to construct full 14 digit format
GTIN = 0 7611608 23436 5
Prepare for EPC encoding
Move indicator to first digit of Item Reference
Drop check digit
GS1 Company Prefix (GCP) = 7611608
Indicator / Item Reference = 023436
Partition = 5 for 7-digit (24 bits) GS1 Company Prefix and 6-digit (20 bits) Indicator / Item Reference
Filter = 1 for Point of Sale (POS) Trade Item
EPC Header = 48 (SGTIN-96) or 54 (SGTIN-198)
The type of serialization determines which SGTIN scheme is used to perform the EPC encoding in tag memory.
The SGTIN-96 encoding is used for numeric serialization for values less than 274,877,906,944. The SGTIN198 encoding is used for alphanumeric serialization.
SGTIN-96
Logical
Segment
Logical
Segment
Bit
Count
Coding
Segment
Coding
Segment
Bit
Count
Bit
Position
Example
EPC
Header
8
Filter
Partition
GS1 Company
Prefix
20-40
Indicator / Item Reference
Serial
3
3
24-4
38
EPC
Header
8
Filter
GTIN
Serial
3
47
38
b95b94…b88
b87b86b85
b84b83…b38
b37b36…b0
00110000
001
Partition = 101 GCP = 011101000010010011011000
Indicator/Item Reference = 00000101101110001100
number
Table 10: SGTIN-96 Encoding Scheme
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EM4126
SGTIN-198
Logical
EPC Header
Segment
Logical
8
Segment
Bit
Count
Coding
EPC Header
Segment
Coding
8
Segment
Bit
Count
Bit
b197b196…b190
Position
Example
00110110
Filter
Partition
3
3
GS1 Company
Prefix
20-40
Indicator / Item
Reference
24-4
Serial
140
Filter
GTIN
Serial
3
47
140
b189b188b187
001
b186b185…b140
b139b138…b0
Partition = 101 GCP = 011101000010010011011000
Indicator/Item Reference = 00000101101110001100
string
Table 11: SGTIN-198 Encoding Scheme
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EM4126
SGTIN-198 uses alphanumeric serialization represented as a string of 1 – 20 7-bit characters. The string is left
justified and unused characters are zero filled. The characters permitted in alphanumeric serialization are
shown in the following table.
Graphic
Symbol
!
"
%
&
'
(
)
*
+
,
.
/
0
1
2
3
4
5
6
7
8
9
:
;
<
=
>
?
A
B
C
D
E
F
G
H
I
J
K
L
Name
Exclamation Mark
Quotation Mark
Percent Sign
Ampersand
Apostrophe
Left Parenthesis
Right Parenthesis
Asterisk
Plus sign
Comma
Hyphen/ Minus
Full Stop
Solidus
Digit Zero
Digit One
Digit Two
Digit Three
Digit Four
Digit Five
Digit Six
Digit Seven
Digit Eight
Digit Nine
Colon
Semicolon
Less-than Sign
Equals Sign
Greater-than Sign
Question Mark
Capital Letter A
Capital Letter B
Capital Letter C
Capital Letter D
Capital Letter E
Capital Letter F
Capital Letter G
Capital Letter H
Capital Letter I
Capital Letter J
Capital Letter K
Capital Letter L
Hex
Value
21
22
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
41
42
43
44
45
46
47
48
49
4A
4B
4C
URI Form
!
%22
%25
%26
'
(
)
*
+
,
.
%2F
0
1
2
3
4
5
6
7
8
9
:
;
%3C
=
%3E
%3F
A
B
C
D
E
F
G
H
I
J
K
L
Graphic
Symbol
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
_
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
Name
Capital Letter M
Capital Letter N
Capital Letter O
Capital Letter P
Capital Letter Q
Capital Letter R
Capital Letter S
Capital Letter T
Capital Letter U
Capital Letter V
Capital Letter W
Capital Letter X
Capital Letter Y
Capital Letter Z
Low Line
Small Letter a
Small Letter b
Small Letter c
Small Letter d
Small Letter e
Small Letter f
Small Letter g
Small Letter h
Small Letter i
Small Letter j
Small Letter k
Small Letter l
Small Letter m
Small Letter n
Small Letter o
Small Letter p
Small Letter q
Small Letter r
Small Letter s
Small Letter t
Small Letter u
Small Letter v
Small Letter w
Small Letter x
Small Letter y
Small Letter z
Hex
Value
4D
4E
4F
50
51
52
53
54
55
56
57
58
59
5A
5F
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
77
78
79
7A
URI Form
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
_
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
Table 12: Characters Permitted in Alphanumeric Serial Numbers
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EM4126
Floor Plan and Pin Description
80
80
3
4
2
636
443.77
EM 4126
353.03
443.77
389.84
389.77
1
96.15
5
0.07
96.08
Y
582
X
Pad size : 68 X 68
All dim ensions in ?m
Fig. 4: Chip dimensions and pins locations
Pin
1
2
3
4
5
Name
VSS
2)
TST1
2)
TST2
2)
TST3
ANT
Pad Type
Bumped
Un-bumped
Bumped
Bumped
Bumped
Description
Antenna N/A - Test purpose only
N/A - Test purpose only
N/A - Test purpose only
Antenna +
Table 13: Pin description. Pins TST2, TST3, VSS can be shorted to ease inlay assembly.
TST1 must not be shorted to any other pins.
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EM4126
Ordering Information
The following charts show the general offering. For detailed Part Number to order, please see the table “Standard
Versions” below.
Die form
EM4126 V% WS 6
Circuit Nb:
EM4126
Customer Version*:
V0 = Standard product
(*refer to Table 6)
Bumping:
U = with Gold Bumps & Polyimide
Die form:
WW = Wafer
WS = Sawn Wafer/Frame
Thickness:
6 = 6 mils (152um)
7 = 7 mils (178um)
11 = 11 mils (280um)
Fig. 5: Ordering information
Remarks:
For ordering, please, use table of “Standard Version” table below.
For specifications of Delivery Form, including gold bumps, tape and bulk, as well as possible other delivery form or
packages, please, contact EM Microelectronic-Marin S.A.
Standard Versions & Samples:
The versions below are considered standards and should be readily available. For other versions or other delivery form,
please contact EM Microelectronic-Marin S.A. For samples, please, order exclusively from the standard version.
Part Number
EM4126V0WS6U
EM4126V%YYY
Package/Die Form
Delivery Form
Sawn wafer / bumped die – thickness of 6 mils Wafer sawn on frame
custom
Custom
Table 14: Standard EM4126 versions readily available
Product Support
Check our website at www.emmicroelectronic.com under Products/RF Identification section. Questions can be submitted to
[email protected] .
EM Microelectronic-Marin SA (“EM”) makes no warranties for the use of EM products, other than those expressly contained in EM's
applicable General Terms of Sale, located at http://www.emmicroelectronic.com. EM assumes no responsibility for any errors which may
have crept into this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does
not make any commitment to update the information contained herein.
No licenses to patents or other intellectual property rights of EM are granted in connection with the sale of EM products, neither expressly
nor implicitly.
In respect of the intended use of EM products by customer, customer is solely responsible for observing existing patents and other
intellectual property rights of third parties and for obtaining, as the case may be, the necessary licenses.
Important note: The use of EM products as components in medical devices and/or medical applications, including but not limited
to, safety and life supporting systems, where malfunction of such EM products might result in damage to and/or injury or death
of persons is expressly prohibited, as EM products are neither destined nor qualified for use as components in such medical
devices and/or medical applications. The prohibited use of EM products in such medical devices and/or medical applications is
exclusively at the risk of the customer
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