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PDF MCRF451 Data sheet ( Hoja de datos )
| Número de pieza | MCRF451 | |
| Descripción | 13.56 MHz Read/Write Passive RFID Device | |
| Fabricantes | Microchip Technology | |
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MCRF450/451/452/455
13.56 MHz Read/Write Passive RFID Device
Features
• Contactless read and write with anti-collision
algorithm
• 1024 bits (32 blocks) of total memory
• 928 bits (29 blocks) of user programmable
memory
• Unique 32-bit tag ID (factory programmed)
• 32 bits for data and 16 bits for CRC per block
• Block write protection
• 70 Kbit/s read data rate (Manchester format)
• Special bit (Fast Read) for fast identification and
anti-counterfeit applications (EAS)
• 1-of-16 PPM encoding for writing data
• Interrogator-Talks-First (ITF) or Tag-Talks-First
(TTF) operation
• Long range for reading and writing
• High-speed anti-collision algorithm for reading
and writing
• Fast and Normal modes for write data speed
• Anti-tearing feature for secure write transactions
• Asynchronous operation for low power
consumption and flexible choice of carrier
frequency bands
• Internal resonance capacitors
(MCRF451/452/ 455)
• Two pad connections for external antenna circuit
(MCRF452)
• Three pad connections for external antenna
circuit (MCRF450, 451, 455)
• Very low power CMOS design
• Die in waffle pack, wafer, wafer on frame, bumped
wafer, COB, PDIP or SOIC package options
Applications
• Item Level Tagging: To read and write multiple
items in long read range environment.
• Anti-Counterfeit: The device has a unique
feature to distinguish between paid, unpaid or
returned merchandise.
• Inventory Management: Tag’s data can be read
or updated (written) in multiple tags and long
range environment. Its memory (32 blocks, 1 Kbit,
each block = 32 bits) is well organized for the
inventory management applications.
• Product Identifications
• Airline Baggage Tracking
• Book Store and Library Book ID
• Low Cost Animal Ear Tags: The device’s long
range reading performance combined with 1 Kbit
of memory is suitable for animal tagging applica-
tions. Tag cost can be cheaper and read range is
much longer than existing 125 kHz conventional
animal ear tags.
• Toys and Gaming Tools: Device’s anti-collision
feature for reading and writing allows to make
intelligent interactive toys and gaming tools.
• Access Control and Time Attendance Cards:
Device’s long range performance allows to make
long range access control, parking lot entry, and
time attendance cards.
Inexpensive finished tags and readers are available
from Microchip’s worldwide OEM partners. Please
contact Microchip Technology Inc. near you or visit
http://www.microchip.com for further product
information and inquiries for your applications.
Typical Configuration for Applications
Interrogator
(Reader/Writer)
Read/Write
Command and Data Ant. A
Data
MCRF452
VSS
Read/Write Range:~ up to 1.5 meters depending
on tag size and system
requirements.
2003 Microchip Technology Inc.
DS40232H-page 1
1 page  
MCRF450/451/452/455
2.0 ELECTRICAL CHARACTERISTICS
TABLE 2-1: ABSOLUTE RATINGS
Parameters
Symbol
Min
Max
Units
Conditions
Coil current into coil pad
IPP_AC
—
40 mA Peak-to-Peak coil current
Maximum power dissipation
PMPD
—
0.5
W—
Ambient temperature with power applied TAMB -40 +125 °C —
Assembly temperature
TASM
—
300
°C < 10 sec.
Storage temperature
TSTORE
-65
150
°C —
Note:
Stresses above those listed under “Maximum ratings” may cause permanent damage to the device. This
is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operational listings of this specification is not implied. Exposure to maximum rating
conditions for extended periods may affect device reliability.
TABLE 2-2:
OPERATING DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature = -20°C to +70°C
Parameters
Symbol Min Typ Max Units
Conditions
Reading voltage
VDDR
2.8
—
—
V VDD voltage for reading at 25°C
Operating current in
IOPER_N
—
20
—
Normal mode
µA VDD = 2.8V during reading at 25°C
Operating current in
IOPER_F
—
45
—
Fast mode
µA VDD = 2.8V during reading at 25°C
Writing current
IWRITE — 130 —
µA At 25°C, VDD = 2.8V
Writing voltage
VWRITE
2.8
—
—
VDC At 25 °C
Modulation resistance
RM
— 3.0 5.0
Ω DC turn-on resistance between
Drain and Source terminals of the
modulation transistor at VDD = 2.8V
Data retention
—
200 —
— Years For T < 120°C
Endurance
— 1.0 — — Million At 25°C
Cycles
2003 Microchip Technology Inc.
DS40232H-page 5
5 Page 
MCRF450/451/452/455
TABLE 2-8: INTERNAL RESONANT CAPACITANCE AND ANTENNA INDUCTANCE
REQUIREMENTS
Device
Name
Resonant
Capacitance
(Antenna A to
VSS)
External
Inductance
Requirement
between Antenna
A and VSS for
13.56 MHz tag
Connection to External
Antenna Circuit
Reference
MCRF451 95 pF ±10%
1.45 µH ±10%
Antenna A, B, and
VSS pads
This device requires three
connections to an external circuit.
Good for direct die attachment onto
antenna.
MCRF452 30 pF ±10%
4.591 µH ±10%
Antenna A and VSS pads This device requires only two
antenna connections. Good for both
direct die attachment and COB.
MCRF455 50 pF ±10%
2.76 µH ±10%
Antenna A, B, and
VSS pads
This device requires three
connections to an external circuit.
Good for direct die attachment onto
antenna.
Note: The internal capacitance value for bumped die is about 1 pF higher than the unbumped die’s capacitor.
2003 Microchip Technology Inc.
DS40232H-page 11
11 Page | ||
| Páginas | Total 50 Páginas | |
| PDF Descargar | [ Datasheet MCRF451.PDF ] | |
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