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I·Code1
The first long range 13.56MHz RFID IC that Philips released was the I·Code1 (SL1). Still in
high volume production, I·Code1 (SL1) is still widely used in applications globally and has an
existing installed base of millions of tags. The I·Code1 (SL1) uses a protocol and air interface
that is proprietary to Philips.
By contrast, the I·Code SLI (SL2), released by Philips in 2002, is fully compatible with ISO/IEC
15693 parts -2 and -3. The host application developer should be explicitly aware of the
distinction between the I·Code1 (SL1) and the I·Code SLI (SL2).
Figure 7 - Memory Structure of the I·Code1 (version SL1 ICS30 01)
512 bits (64 bytes) of user memory is available for read/write.
Block #
3 (0x03)
4 (0x04)
5 (0x05)
.
.
.
14 (0x0E)
15 (0x0F)
A 64-bit ID (factory programmed) uniquely identifies each I·Code1 chip.
TID
40
32 bits
(4 bytes per block)
.
.
.
.
.
.
.
.
.
Unique Tag ID 64 bits (8 bytes)
The user can permanently lock
.
any block.
.
.
Once a block is locked it cannot
be unlocked.
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