Datasheet GT-521FX2 Optical Fingerprint Recognition EMBEDDED Module Version 1.1 July 07 , 2017 www.adh-tech.com.tw sales@adh-tech.com.
Revision History Version Data Description V1.0 Jun 19, 2017 Created V1.
Table of content Table of content .................................................................................................................. 3 1. General Description ........................................................................................................ 4 2. Feature............................................................................................................................. 5 3. Specification ............................................................................
1. General Description The GT-521FX2 is high performance fingerprint module that is able to be waken by a finger touching the metal frame of sensor. It is one chip fingerprint module designed for integration into products with UART interface. It configure as USB mass storage device so it no need additional effort to handle driver.. The active area allows stable imaging and ability to cope with mass market applications in need of both security and convenience.
2. Feature • Simple UART & USB communication protocol • Complies with USB 2.
3. Specification Item GT-521FX2 CPU ARM Cortex M3 Core Sensor Optical Sensor Window (mm) 16.9 x 12.9 Effective area of the Sensor (mm) 14 x 12.5 Image Size 258 x 202 Pixels Resolution 450 dpi The maximum number of fingerprints 200/3000 fingerprints Matching Mode 1 : 1；1 : N The size of template 496 Bytes (template) + 2 Bytes (checksum) Communication Interface UART, default baud rate = 9600bps after power on USB Ver2.0, Full speed False Acceptance Rate (FAR) < 0.
Tou ch Operating Voltage DC 3.
4.
5.Pin Assignment Touch IC Connector No. Name Description 1 VDD Power voltage that range is 3.3V 2 GND Ground 3 ICPDA Program mode：In-circuit programming data/address pin. VIL = 0.66V, VIH = 2.64V 4 ICPCK Program mode：In-circuit programming clock pin Normal mode：It could be waked-up function from touch IC to VIL = 0.66V, VIH = 2.64V UART Connector(Baud rate 9600~115200bps) No. Name 1 TX Description Transmitting serial data VIL = 0.8V, VIH = 2V 2 RX Receiving serial data VIL = 0.
Application of controlling GT Module LED Behavior Status Just touch frame ICPCK=> "L"-->"H" No touch frame ICPCK=> "L"-->"L" Keep touch frame ICPCK=> "H"-->"H" Taking off finger on frame ICPCK=> "H"-->"L" Status of ICPCK pin Outline of module 1 0
