Fingerprint 2 Click Board™

Product Code: MIKROE-4119

How Does The Fingerprint 2 Click Board™ Work? The Fingerprint 2 Click Board™ features an A-172-MRQ, a 2D capacitive fingerprint sensor with an active scanning area of 8.8 x 8x8 mm and a resolution of 176 x 176 pixels. The sensor is based on capacitive-contact technology with a hardened surface and enhanced ESD immunity. Onboard Nuvoton M2301 MCU which serves as interface IC and control unit on this board, interface this sensor over a high-speed SPI interface and comes with built-in fingerprint matching capability while leaving most of the chip resource to application developers. Developers can develop fingerprint-related products based on the communication protocol without the advanced knowledge of fingerprint identification. The Fingerprint 2 Click Board™ has stable performance and a simple structure. The simplified functions for faster and easy development include fingerprint comparison, image scanning transmission, search, registered fingerprint storage and system unique internal code protection mechanism.

The fingerprint comparison program can register at most 24 fingerprints, the comparison speed is fast and the correct rate is very high. Thanks to the Nuvoton MCU with the on-chip crypto-accelerator, Cortex-M23 TrustZone, and XOM facilities that is communicating with the fingerprint sensor and providing information to the host, Fingerprint 2 Click board can be interfaced with commands over UART protocol (baud rate 115200) or USB 2.0 full speed. For proper operation the Fingerprint 2 Click Board™ needs to be supplied with 3.3V and 5V. However, note that this board it is designed to be operated only with 3.3V logic levels. Therefore a proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with logic levels of 5V. BYNEW QUICKICK UTILITY TOOL For using and controlling the Fingerprint 2 Click Board™ with PC Application from ByNew you will need first to connect your board to PC by using USB or some TTL converter for UART. After that, you can start the Utility tool BNQuickick.exe and select the COM port and Baud rate to operate/control this board. Since this application is simplifying testing our board and acts as MCU host you can use the same commands from the Fingerprint 2 Click Board™ example to control our board. SPECIFICATIONS Type Fingerprint Applications Fingerprint scanners are chiefly used in biometric security applications On-board modules A-172-MRQ-K05A13001, Fingerprint scanners from ByNew Key Features 8.8x8.8mm active scanning area, capable of storing up to 24 different fingerprints at the same time, as well as recognition algorithm for fingerprint comparison Interface GPIO,UART,USB Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V,5V PINOUT DIAGRAM This table shows how the pinout on the Fingerprint 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Compare indicator LD1 1 AN PWM 16 GP2 General Purpose I/O pin Reset RST 2 RST INT 15 LD2 Compare Indicator General Purpose I/0 pin GP1 3 CS RX 14 TX UART Transmit NC 4 SCK TX 13 RX UART Receive NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED indicator LD2 I/O_1 - Compare LED indicator (Green LED) LD3 I/O_2 -