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PDF AT88RF020-WC-82 Data sheet ( Hoja de datos )
| Número de pieza | AT88RF020-WC-82 | |
| Descripción | 13.56 MHz/ 2048-bit RFID EEPROM | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• 13.56 MHz RFID Chip for Cards or Tags
• 2048-bit Read/Write RFID EEPROM
• ISO 14443-2 Type B Compliant
• Full ISO 14443-3 Compliant Anticollision
• 100,000 Write Cycle Reliability
• 3 ms Write Time
• Password and Lockwrite Protection
• 82 pF Tuning Capacitor
• 0 – 70°C Operation
Description
The AT88RF020 is a low-end 13.56 MHz RFID (Radio Frequency IDentification)
device that includes an on-chip EEPROM-based (nonvolatile) memory. The wireless
interface complies with Type B operation of ISO/IEC 14443. The specific sections of
compliance are 14443-1, as well as 14443-2:1999(E) (dated 5/2/00) and 14443-
3:2000(E) (dated 7/13/00).
This device is designed to be used in applications where one or more RFID devices
will be simultaneously placed within an intelligent reader/writer RF field. Communica-
tion between the RF reader/writer and this device will take place through the use of
the featured anticollision command set supported by this device.
The memory contains a total of 2048 bits, organized as 32 64-bit pages. Write opera-
tions are designed to complete in less than three milliseconds (ms). The endurance
rating for the memory is 100,000 write cycles per byte.
This device supports these security features: password checking, data locking, a one-
way counter and a guaranteed unique serial number.
The AT88RF020 includes an on-chip internal tuning capacitor that enables it to oper-
ate with a single external coil antenna. This antenna completes the RFID channel.
Figure 1. Block Diagram
13.56 MHz,
2048-bit RFID
EEPROM
AT88RF020
Bridge
Rectifier
Regulator
Clock
Extraction
Data
Modulation
Control
EEPROM
Rev. 2010B–RFID–03/02
1
1 page  
AT88RF020
The PICC ignores all the PARAM bytes with the exception of the least significant four
bits of PARAM4, which are stored within the chip as the CID for future responses. Any
higher layer INF command is also ignored.
The PICC response to a valid ATTRIB command is always three bytes long. The first
byte contains the CID in the lower nibble and 0x0 in the upper nibble. The next two bytes
are the CRC.
HLTB Command
The HLTB command is used to set the PICC to the HALT state, after which only the
WUPB command will be acknowledged. The format of this 7-byte command is 0x50,
PUPI (4 bytes), CRC (2 bytes). The chip always responds to a valid HLTB command
with the 3-byte sequence: 0x00, CRC_0 and CRC_1. The HLTB command is not valid if
the PICC is in the ACTIVE state (see ISO 14443-3 sections 7.4.7 and 7.12 for additional
information).
SlotMARKER Command
The SlotMARKER command provides a way for the reader to query those cards for
which the generated random number R is greater than 1. It is a 3-byte command, the
last two of which are the CRC bytes. The least significant nibble of the first byte is the
slot number, and if this matches the generated random number, then the ATQB
response is generated. The chip will truncate the slot number field to match the value of
N provided in the REQB command. The most significant nibble of this command is fixed
at 0xA.
2010B–RFID–03/02
5
5 Page 
Package Drawing
16S2 – SOIC
1
EH
C
AT88RF020
Top View
N
A1
End View
eb
COMMON DIMENSIONS
(Unit of Measure = inches)
D
Side View
A
SYMBOL MIN NOM
A 0.0926 –
A1 0.0040 –
b 0.0130 –
C 0.0091 –
D 0.3977 –
E 0.2914 –
H 0.3940 –
L 0.0160 –
e 0.050 BSC
MAX
0.1043
0.0118
0.0200
0.0125
0.4133
0.2992
0.4190
0.050
NOTE
5
2
3
4
Notes: 1. This drawing is for general information only; refer to JEDEC drawing MS-013, Variation AA for additional information.
2. Dimension D does not include mold Flash, protrusions or gate burrs. Mold Flash, protrusions and gate burrs shall not exceed
0.15 mm (0.006") per side.
3. Dimension E does not include inter-lead Flash or protrusion. Inter-lead Flash and protrusions shall not exceed 0.25 mm
(0.010") per side.
4. L is the length of the terminal for soldering to a substrate.
5. The lead width B, as measured 0.36 mm (0.014") or greater above the seating plane, shall not exceed a maximum value of 0.61 mm
(0.024") per side.
1/9/02
2325 Orchard Parkway
R San Jose, CA 95131
TITLE
16S2, 16-lead, 0.300" Wide Body, Plastic Gull Wing
Small Outline Package (SOIC)
DRAWING NO. REV.
16S2
A
2010B–RFID–03/02
11
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| PDF Descargar | [ Datasheet AT88RF020-WC-82.PDF ] | |
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