參數(shù)資料
型號(hào): PN531
廠商: NXP Semiconductors N.V.
英文描述: Zener Diode; Application: General; Pd (mW): 400; Vz (V): 7.5 to 7.9; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: MHD
中文描述: レ基于C傳輸模塊
文件頁數(shù): 11/19頁
文件大小: 246K
代理商: PN531
Philips Semiconductors Objective Short Form Specification Rev. 2.0 February 2004
PN531
μC based Transmission module
4.2 NFC MODE
NFC communication differentiates between an active and a passive communication.
Active NFC Mode means both the initiator and the target are using their own RF field for the
communication.
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.
Battery
Host
PN531
PN531
Battery
Host
Figure 4 NFC Mode
Initiator: generates RF field @ 13.56 MHz and starts the NFC communication
Target: responds to initiator commands either using load modulation scheme (RF field continuously
generated by Initiator) or using modulation of self generated RF field (no RF field generated by initiator)
11
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