OM25180FDKM datasheet(71/149 Pages) NXP

Part #	OM25180FDKM

Description	High-performance multi-protocol full NFC Forum-compliant frontend

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Manufacturer	NXP [NXP Semiconductors]

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PN5180

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Product data sheet

COMPANY PUBLIC

Rev. 3.0 — 7 October 2016

240930

71 of 149

NXP Semiconductors

PN5180

High-performance multi-protocol full NFC Forum-compliant frontend

11.8.8 Autocoll

The Autocoll state machine performs the time critical activation for Type-A PICC and for

NFC-Forum Active and Passive Target activation.

The PICC state machine supports three configurations:

• Autocoll mode0: Autocoll mode is left when no RF field is present

• Autocoll mode1: Autocoll mode is left when one technology is activated by an external

reader. During RFoff, the chip enters standby mode automatically

• Autocoll mode2: Autocoll mode is left when one technology is activated by an external

reader. During RFoff, the chip does not enter standby mode.

At start-up, the Autocoll state machine automatically performs a LOAD_RF_CONFIG with

the General Target Mode Settings. When a technology is detected during activation, the

Autocoll state machine performs an additional LOAD_RF_CONFIG with the

corresponding technology.

The card configuration for the activation is stored in EEPROM. If RandomUID is enabled

(EEPROM configuration, Address 0x51), a random UID is generated after each RF-off.

For all active target modes, the own RF field is automatically switched on after the initiator

has switched off its own filed.

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