Effective Area of the Sensor
14mm x 12.5mm
Image Size
258x202 Pixels
Resolution
450 dpi
Max # of Fingerprints
200 / 3000
Matching Mode
1:1, 1:N
Size of Template
496 Bytes(template) + 2 Bytes (checksum)
Serial Communication
UART (Default: 9600 baud) and USB v2.0 (Full Speed)
False Acceptance Rate (FAR)
< 0.001%
False Rejection Rate (FRR)
< 0.01%
Enrollment Time
< 3 sec (3 fingerprints)
Identification Time
<1.5
Operating Voltage
3.3V ~ 6Vdc
Operating Current
< 130mA
Touch Operating Voltage
3.3Vdc
Touch Operating Current
< 3mA
Touch Standby Current
< μ5
The image below shows the fingerprint scanner’s optical sensing area where the device will be able to scan your fingerprint.
There is a marking next to the JST-SH connector that indicates polarity. The JST-SH connector breaks out the pins for serial UART and power. While the input voltage is
between 3.3V and 6V, the UART’s logic level is only 3.3V. You will need a logic level converter or voltage divider to safely communicate with a 5V device.
Note: Make sure that you are connecting to the correct JST connector indicated by the polarity marker and capacitors. The JST connector on the other side of the board
are not connected to the same pins for serial UART.
The GT-521F32 and GT-521F52 have the ability to sense if a finger is placed on the optical sensing area. Upon contact with the metal frame around the optical sensing area,
the ICPCK will output 3.3V (HIGH). Otherwise, the ICPCK will be 0V (LOW)
Touch State
ICPCK Pin Status
Finger Initially Touching the Frame
LOW => HIGH
