1. Operating voltage: 3.3V~5.0V
2. Operating current: < 60mA
3. Standby current: < 12μA
4. Maximum fingerprint storage capacity: 1000
   - Sensing pad dimension: 9.6 x 12.8mm
   - Image size: 192 x 256 pixel
   - Resolution: 508dpi
5. Fingerprint template: 180 x N bytes (the max. value of N is 3)
6. False Acceptance Rate (FAR): ≤0.001%
7. False Reject Rate (FRR): ≤3%
8. Recognition time: < 15ms (1:1)
9. Power-on initialization time: < 100ms
10. Registration time: < 10 seconds
11. UART interface (default baud rate: 115200bps)
12. Product includes: fingerprint sensor BM92S2231-1 x1 | cable x1
13. Dimension: 33.4 x 20.4 x 6.2 mm
14. Net weight: 4.5g

The product integrates a touch key designed to detect finger touches. When a finger touches the metal frame surrounding the fingerprint sensor, pin 1 (KeyOut) outputs a high level; otherwise, it remains low when there is no contact. It significantly reduces power consumption.
The product will enter standby mode upon receiving a command and can be awakened by a finger touch.

Users need to enter an ID number between 0 and 1,000 when registering a fingerprint. The product will check if the ID is valid and available. If the ID is usable, users will be prompted to place their fingers on the sensing pad. If no finger is detected within 60 seconds (the default timeout) during the registration process, the registration will automatically terminate, resulting in a registration failure.

⬥ Differences between full angles detection 1 and 2: (1) Recognition time: 1 < 2   (2) Recognition performance: 2 > 1

1. MCU: HT32F49395, 32-Bit Arm® Cortex®-M4 MCU, including datasheet, package information, etc.
2. Application note: AN0660EN, HT32F49xxx MCU SPIM Application Guidelines