Rainbow Electronics MAX66120 User Manual

Page 3

MAX66120

ISO 15693-Compliant 1Kb Memory Fob

_______________________________________________________________________________________

FRONT-

END

VOLTAGE

REGULATOR

INTERNAL SUPPLY

MEMORY AND

FUNCTION

CONTROL

ISO 15693

FRAME

FORMATTING

AND

ERROR

DETECTION

UID

BLOCK

USER

EEPROM

DATA

MODULATION

Figure 1. Block Diagram

Parasite Power

As a wireless device, the MAX66120 is not connected
to any power source. It gets the energy for operation
from the surrounding RF field, which must have a mini-
mum strength as specified in the

Electrical

Characteristics

table.

Unique Identification Number (UID)

Each MAX66120 contains a factory-programmed and
locked identification number that is 64 bits long
(Figure 3). The lower 36 bits are the serial number of
the chip. The next 8 bits store the device feature
code, which is 02h. Bits 45 to 48 are 0h. The code in

AVAILABLE COMMANDS:

DATA FIELD AFFECTED:

INVENTORY
STAY QUIET
SELECT
RESET TO READY

UID, AFI, DSFID, ADMINISTRATIVE DATA
UID
UID
UID

NETWORK

FUNCTION COMMANDS

GET SYSTEM INFORMATION
WRITE SINGLE BLOCK
LOCK BLOCK
READ SINGLE BLOCK
READ MULTIPLE BLOCKS
CUSTOM READ BLOCK

WRITE AFI
LOCK AFI
WRITE DSFID
LOCK DSFID

UID, AFI, DSFID, CONSTANTS
UID, DATA OF SELECTED MEMORY BLOCK, APPLICABLE PROTECTION CONTROL REGISTER
UID, APPLICABLE PROTECTION CONTROL REGISTER
UID, SELECTED MEMORY BLOCK, APPLICABLE PROTECTION CONTROL REGISTER
UID, SELECTED MEMORY BLOCK, APPLICABLE PROTECTION CONTROL REGISTER
MFGCODE, UID, SELECTED MEMORY BLOCK, APPLICABLE PROTECTION CONTROL REGISTER,
INTEGRITY BYTES
UID, AFI BYTE
UID, AFI LOCK BYTE
UID, DSFID BYTE
UID, DSFID LOCK BYTE

MEMORY AND CONTROL

FUNCTION COMMANDS

COMMAND TYPE:

MAX66120

Figure 2. ISO 15693 Commands Overview

MSb

LSb

57 56

49 48

45 44

37 36

E0h

2Bh

FEATURE CODE (02h)

36-BIT IC SERIAL NUMBER

Figure 3. 64-Bit UID