Products – Micro RWD ICODE SLI
Low-cost proximity "Combination"
RFID reader module supporting Philips (ISO 15693) ICODE SLI AND Philips Mifare 1k,
4k and Ultralight transponders/labels.
The module is completely housed within a 24-pin DIP package (pin compatible with
other modules) and only requires a 5v supply and a 1 micro-Henry antenna board to
be fully featured read/write and tag acceptance system.
The RWD module has
outstanding RF drive capability and has a read/write range to ISO
card size labels of up to 10cm whilst maintaining reliable communication and high
resilience to EMC corruption. This has been achieved through extensive software
and
hardware filtering and optimization techniques.
The RWD module has a
TTL level RS232 interface that allows a host system to send and receive easy-to-use
optimized commands/data (for example: Ascii “R” command to read tag data and Ascii
“W” command to write tag data).
The RWD also has internal
EEPROM memory for holding system parameters, security key codes, lists of
authorized
serial numbers and supports direct LED drives to give visual indication of acceptance.
Up to 50ma of drive current is also provided as an output that can be used to switch
external loads.
Download Micro
RWD ICODE
data sheet
Data sheets,
Application notes and Windows applications. (as supplied on CDROM)
Basic electrical
specification without LEDs fitted and no auxiliary output drive.
|
Parameter |
Typical Value |
|
Supply Voltage |
5v DC |
|
Operating temperature |
-25 deg
C to + 70 deg C |
|
Average current
consumption with default polling cycle delay |
20ma |
|
Peak antenna
voltage (optimum tuned antenna) |
60v |
|
Peak current
(Antenna tuned with IBT evaluation antenna)
(NOTE RF IS
NORMALLY OFF AND IS ONLY TURNED ON DURING TAG COMMUNICATION RESULTING IN
VERY SHORT BURST OF UP TO 150MA CURRENT CONSUMPTION)
|
150ma max
|
|
Communication
time for Tag authentication (mifare) |
5mss |
|
Communication
time for 128 bit WRITE operation |
2ms |
|
Maximum data
rate (between Tag and RWD) |
53k bits/sec
(ICODE SLI)
106k bits/sec (MIFARE) |
|
Range (dependent
on antenna dimensions) |
Up to 10cm |
|
Auxiliary output
drive |
Up to 50ma
sink |
|
9600/38400 baud
select input (pulled up) , default 9600 baud |
Pulled low
selects 38400 baud |
|
Serial Interface |
TTL level
RS232 |
|
Communication
Parameters |
9600 baud,
8 data bits, no parity, 1 stop bit protocol
with CTS handshake |
Supported Transponders – Philips ICODE SLI (ISO15693)
ICODE SLI has 128 bytes
of read/write memory with a unique factory-programmed serial number at the first
locations in memory.
13.56 MHz, 1024 bit
(128 byte) read/write passive RFID transponder.
ICODE SLI is an ISO15693 compliant
transponder that has fast access and read/write times and has been designed to be
used in “Smart Labels” packages for asset tracking and other applications.
The higher frequency operation
allows communication rates up to 53 kbaud. The flexible memory structure and the
requirement for only a few turns of wire or printed foil tracks for the antenna
makes ICODE SLI a popular and low-cost read/write transponder type.
Memory is organized as 4-byte blocks with the first two blocks containing a factory
programmed 8-byte unique serial number (UID).
Data can be read/written
to 4-byte Blocks or multiples of Blocks in one operation.
ICODE
SLI data sheet
Compare
with other supported tag types
Supported Transponders – Philips Mifare (S50) (ISO 14443A)
Mifare 1k
has 1024 bytes of read/write memory (4k version has 4096 bytes of memory) which
is divided up into 16 segments (40 on 4k version), each secured by programmable
key codes.
13.56 MHz, 8192 bit (1024 byte) read/write passive RFID transponder. Large
memory size is organized as 16 sectors, each with it’s own security key codes
and access conditions.
This allows entirely different applications to use separate memory sectors with
unique security keys. In addition, the Mifare cards use a three-pass
authentication
system and data encryption techniques to make the system very secure. For this
reason Mifare cards are often used for financial or ticketing applications where
privacy of data and reliable, secure data transactions are essential.
The higher frequency operation allows communication rates up to 106 kbaud.
Memory is organized as 16-byte Blocks. Groups of 4-Blocks are called Sectors,
each having have unique security keys and access conditions. Block 0 contains
a factory programmed 4-byte unique serial number (UID) together with other
manufacturer and configuration information.
Data can be read/written to Blocks (16 bytes) in one operation. Mifare is
widely
accepted as the Market-leading technology for ISO14443A secure ticketing and
access control applications (Transport for London Oyster card for example).
Mifare 1k data sheet
Compare with other supported tag types
