MIAXIS® model SM-66T3 is a Circular Capacitive Fingerprint Module, which developed by Miaxis Biometrics consists of semi-conductor fingerprint sensor, low power consumption & high-performance ARM core processor and FLASH etc chips.
The module supports fingerprint image processing, template extraction, fingerprint matching (including 1: 1 and 1: N), template storage and other functions.
OVERVIEW
An Integrated Fingerprint Module for Multi-Scenario Applications
Integrates fingerprint sensing, algorithm, template storage and communication in a compact 21 mm module
Delivers fast and stable recognition for access control, smart locks, identity authentication and self-service terminals
Engineered In-House, Accessible to All
The circuit, firmware and algorithm are independently developed in-house
On-module acquisition, matching and 1:N search simplify integration through UART commands
High-Sensitivity Semiconductor Fingerprint Sensor for One-Touch Recognition
Supports light-touch acquisition and automatically optimizes image quality
Performs reliably with dry, moist, worn or shallow fingerprints across diverse users and environments
Self-Learning Algorithm and Encrypted Storage Design
Continuously updates fingerprint templates after successful verification to improve matching accuracy
Stores encrypted templates inside the module, keeping biometric data secure and private
Ultra-Low Power Design and Configurable Security Levels
Supports hardware sleep and wake-up with standby current as low as 6 μA
Adjustable security levels balance recognition accuracy, security and verification speed for different applications
Parameter Comparison
| Specification | Detail |
Supply Voltage | VDD_CTRL: DC3.3±0.3(V) |
| Vtouch: DC3.3±0.3(V) | |
| Supply Current | ≤26mA |
| Peak Current | ≤50mA |
| Sleep Current | ≤6uA |
| Startup Time（T0） | ≤60ms |
| Capture Time | ≤100ms |
| Feature Extraction Time | ≤250ms |
| 1:1 Verification Time | ≤20ms |
| Fingerprint Capacity | 100/500/100（options） |
| 1:100 Matching Time | ≤0.7s |
| 1:500 Matching Time | ≤1s |
| 1:1000 Matching Time | ≤1.5s |
| FAR | ≤0.001%，security level=3 |
| FAR | ≤1.0%，security level=3 |
| Template Size | 5340 bytes（1000 Capacity） 5340 bytes（500 Capacity） 8900 bytes（100 Capacity） |
| Image Size | 160×160 pixel |
| Image Resolution | 508 DPI |
| Operating Temperature | -25℃ to +70℃ |
| Storage Temperature | -40℃ to +80℃ |
| Operating Humidity | ≤93%RH（no condensation） |
| ESD Immunity | ±8kV contact discharge, ±15kV air discharge |
| Communication Interface | UART，1 start bit, 8 data bits, 1 stop bit 57600(default) 5 options=9600、19200、38400、57600、115200 |
| Module Size | Diameter 21.0mm Thickness 6.2mm |
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