NFC module

NFC module introduction -What is NFC module?

To know what is NFC module, let’s first understand what is NFC.

NFC is the abbreviation of Near Field Communication, that is, short-range wireless communication technology. It is a technical standard based on radio frequency identification (RFID), which can transmit signals wirelessly within a short distance. It is a short-range high-frequency wireless communication technology that allows non-contact point-to-point data transmission (within ten centimeters) to exchange data between electronic devices. This technology evolved from contactless radio frequency identification (RFID) and is backward compatible with RFID. It is mainly used to provide M2M (Machine to Machine) communication in handheld devices such as mobile phones.

What is NFC module?

The NFC module refers to a module with short-range wireless communication technology. It is a highly integrated 13.56MHz non-contact reader module with low power consumption. It adopts SL2823 as the core non-contact reader chip, supports multiple non-contact communication protocols, and provides reading and writing ISO/IEC 14443 Type A/B MIFARE.

Due to the natural security of short-range wireless communication, NFC modules are widely used in vehicle monitoring (bmw NFC module), remote control, telemetry, small wireless networks, wireless meter reading, access control systems, community paging, industrial data acquisition systems, wireless tags , identification, non-contact RF smart card, small wireless data terminal, fire protection system, wireless remote control system, biological signal acquisition, hydrometeorological monitoring, robot control, wireless 232 data communication, wireless 485/422 data communication, digital audio, digital image transmission and other fields.

NFC module features

1.Support a variety of non-contact communication protocols.
2.Support I2C/SPI communication, read and write distance 2-4CM.
3.Support ultra-low power card check (LPCD) function and LPCD power saving mode.
4.It can be widely used in NFC card reading application scenarios of smart door locks, smart car locks and other devices.
5. It can be widely used in the application scenarios of mobile phone, wristband, watch and other equipment to simulate card detection.

NFC module datasheet for hardware


Mechanical Dimensions	50*31mm
interface	Use I2C by default. Can be switched to SPI interface by changing solder resistance and macro definition. UART is not supported
Voltage	3.3V The maximum emission current of the chip is 150 mA Chip soft power-down mode current 3.5uA
characteristic	Supports reader mode as PCD/VCD. Supports Enhanced Ultra Low Power Card Detection (LPCD) function. Automatically trigger an interrupt when a card is detected. The read and write distance is about 2~4 cm, and the send and receive FIFO buffer of 64 Bytes is integrated with the specific tag/card.
supporting agreement	ISO/IEC 14443 Type A/B lSO 15693 JIS 6319-4 Sony Felica MIFARE
Communication and interface speed	106 Kbps, 212 Kbps, 424 Kbps, 848 Kbps depending on specific tag/card. SPI up to 10Mbps. I2C up to 3.4Mbps.

NFC module Size

NFC module Picture

NFC module schematic

NFC module experiment

NFC module Query mode experiment — Query mode experimental phenomenon

NFC module LPCD Mode experiment — LPCD Mode Experimental Phenomenon

raspberry pi NFC module connection experiment

NFC module raspberry pi add a display to realize employee attendance

NFC (near field communication) belongs to high frequency, the reading distance is about 2cm, the protocol is 14443a, 15693, android/ios both support NFC (NFC module for android), and it is currently used in mobile payment and other scenarios.

The Raspberry Pi can be paired with the NFC module and then equipped with a display (connected to the hdmi interface) to make a simple employee time attendance machine (the employee time card must contain high-frequency tags).

1. Hardware wiring

The Raspberry Pi communicates with the NFC module (raspberry NFC module) using the SPI interface (SPI, Serial Peripheral Interface, refers to the serial peripheral interface, which is a master-slave interface). If you want to know more aboutNFC module on raspberry pi, please contact us.

GPIO interface diagram of Raspberry Pi 4

NFC module application scenarios

A NFC module is a module that uses wireless technology for wireless transmission. This NFC module is widely used in wireless RF scenarios such as smart door locks, wireless meter reading, access control systems, community paging, identification, non-contact RF smart cards, security fire protection systems, and wireless remote control systems.

NFC module Shipping List

We have variety NFC module for sale, if you want to know the types of NFC module, cost of NFC module and price of NFC module, you can click WHATSAPP to contact us for more information of NFC module.

NFC module cable

The NFC module is connected with the development board to realize the virtual access control function. There are many types of development boards, and the NFC module can be used on STM32 series, Raspberry Pi(NFC module on raspberry pi), 8051 development boards, ESP32 series (NFC module esp32) and other development board products to realize its functions. When the development board develops the function of the NFC module, it needs to be used with the NFC module. When they are connected, a medium is needed. This medium is the lead-out line (NFC module cable) we often use. This lead-out line can be DuPont line, DuPont line to USB Wire. If you want to know more, please contact us.

Contact us for NFC module cost

We have variety NFC module for sale, if you want to know more information of NFC module. For example,types of NFC module, cost of NFC module and price of NFC module,NFC module cable, you can click WHATSAPP to contact us.