Fingerprint 4 Click Board™

Product Code: MIKROE-5465

How Does The Fingerprint 4 Click Board™ Work? The Fingerprint 4 Click Board™ is based on the FPC BM-Lite module (100018754), a standalone, compact biometric fingerprint solution from Fingerprints with a robust fingerprint sensor, biometric processor, and on-board template storage ready to be used out-of-the-box. This Click board™ can be integrated into any application and controlled by a host MCU sending some basic commands for enrollment and verification via the selectable serial interface. The BM-Lite module is based on capacitive technology and utilizes a reflective measurement method. It acquires the fingerprint image from the fingerprint sensor and stores them in the internal flash memory, which is pre-loaded with firmware from Fingerprints and used for all biometric operations and template storage. The BM-Lite module, with 160x160px sensor matrix, uses a 3D pixel sensing technology that can read virtually any finger, dry or wet, and brings together superior biometric performance and a high standard of integrated quality components to offer an embedded solution for increased security and enhanced user convenience.

The module has a protective coating that protects against ±15kV ESD, scratches, and daily wear and tear impact. It is also waterproof, making it suitable for demanding industrial conditions and all-weather applications. The Fingerprint 4 Click Board™ allows the UART interface with commonly used UART RX and TX pins, operating at 115200bps by default configuration, to transmit and exchange data with the host MCU or SPI interface with a maximum frequency of 20MHz. The selection can be made by positioning SMD jumpers labelled as COMM SEL in an appropriate position. While using the SPI interface, users can use the data ready pin, marked IRQ and routed to the INT pin of the mikroBUS™ socket, to inform the host MCU about detecting a finger on the module and general reset function routed on the RST pin of the mikroBUS™ socket. The Fingerprint 4 Click Board™ e can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development. SPECIFICATIONS Type Fingerprint Applications Can be used for demanding industrial conditions and all-weather applications On-board modules BM-Lite module (100018754) - compact biometric fingerprint solution from Fingerprints Key Features Out-of-the-box solution, superior performance, high component standard, increased security and user convenience, 3D pixel sensing technology, configurable interface, and more Interface SPI,UART Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout on f the Fingerprint 4 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC Reset RST 2 RST INT 15 IRQ Data Ready SPI Chip Select CS 3 CS RX 14 TX UART TX SPI Clock SCK 4 SCK TX 13 RX UART RX SPI Data OUT SDO 5 MISO SCL 12 NC SPI Data IN SDI 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 COMMM SEL Left Communication