RF430CL331HIPWR datasheet(17/63 Pages) TI2

17 / 63 page

RF430CL331H

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SLASE18A – SEPTEMBER 2015 – REVISED NOVEMBER 2015

This device supports ISO/IEC 14443-3, ISO/IEC 14443-4, and NFC Forum commands as described in the

following sections.

The device supports data rates of 106, 212, 424, and 848 kbps.

Even though all data rates up to 848 kbps are supported, the device by default reports only the capability

to support 106 kbps to the PCD. To change this behavior, use the sequence described in Section 5.7.3.

The device always answers ATTRIB commands from the PCD that request higher data rates. The NFC

Forum specifies for NFC-B a maximum data rate of 106 kbps. It is assumed that an NFC-compliant PCD

would not request higher data rates, thus, no interoperability issues are expected.

The NFC Forum Type 4B Tag Platform and ISO/IEC 14443B command and response structure is detailed

in ISO/IEC 14443-3, ISO/IEC 14443-4, and NFC Forum-TS-Digital Protocol. The applicable ISO/IEC 7816-

4 commands are detailed in NFC Forum-TS-Type-4-Tag_2.0.

5.7.1

ISO/IEC 14443-3 Commands

These commands use the character, frame format, and timing that are described in ISO/IEC 14443-3,

clause 7.1. The following commands are used to manage communication:

REQB and WUPB

The REQB and WUPB commands sent by the PCD are used to probe the field for PICCs of Type B. In

addition, WUPB is used to wake up PICCs that are in the HALT state. The number of slots N is

included in the command as a parameter to optimize the anticollision algorithm for a given application.

Slot-MARKER

After a REQB or WUPB command, the PCD may send up to (N – 1) Slot-MARKER commands to

define the start of each timeslot. Slot-MARKER commands can be sent after the end of an ATQB

message received by the PCD to mark the start of the next slot or earlier if no ATQB is received (no

need to wait until the end of a slot, if this slot is known to be empty).

ATTRIB

The ATTRIB command sent by the PCD includes information required to select a single PICC. A PICC

receiving an ATTRIB command with its identifier becomes selected and assigned to a dedicated

channel. After being selected, this PICC only responds to commands defined in ISO/IEC 14443-4 that

include its unique CID.

HLTB

The HLTB command is used to set a PICC in HALT state and stop responding to a REQB.

After answering to this command, the PICC ignores any commands except the WUPB.

5.7.2

NFC Tag Type 4 Commands

Select

Selection of applications or files

Read Binary

Read data from file

Update Binary

Update (erase and write) data to file

Detailed Description

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