PN531 NXP Semiconductors, PN531 Datasheet - Page 13

• Manufacturer Part Number: PN531
• Description: ??c Based Transmission Module
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PN531
4.2.2 PASSIVE NFC MODE
Passive NFC Mode means that the target answers to an initiator command in a load modulation scheme.
The initiator is active i.e. generating the RF field.
N
The PN531’s firmware and contactless UART handle the NFC protocol.
4.3 Card Operating mode
The PN531 can be addressed like a FeliCa
combination with a secure µC may acts as an ISO14443A /MIFARE
N
powered to
generate RF field
Communication Diagrams for passive NFC communication
Communication diagram
Host
Reader/ Writer for FeliCa
NFC Initiator
or MIFARE
1. Initiator starts communication
at selected transfer speed
Figure 6 passive NFC Mode
Figure 7 -Card Operating Mode
TM
or ISO14443A/ MIFARE
Objective Short Form Specification Rev. 2.0 February 2004
2. Targets answers using
load modulated data
at the same transfer speed
13
µC based Transmission module
®
or FeliCa
®
Emulates a contactless card
card. This means that the PN531 in
NFC Target
PN531
TM
card.
powered for digital
processing
Battery
Host &
SAM
Host