×
| Parameter Category | Item | Specification Details |
|---|---|---|
| Basic Information | Product Model | A040 |
| Basic Information | Product Name | 4×4 Matrix Keypad (A040) |
| Basic Information | Product Weight | 41g |
| Basic Information | Key Quantity | 16 SMD tactile keys (KEY1~KEY16), arranged in 4-row × 4-column matrix |
| Basic Information | Interface Type | 8Pin pin header / anti-reverse socket, 4 rows ROW1~ROW4 + 4 columns COLUMN1~COLUMN4 |
| Basic Information | Reading Method | GPIO row-column scanning level reading |
| Basic Information | Operating Voltage | 3.3V~5V, compatible with voltage levels of all series MCUs |
| Dimension Parameters | Overall PCB Size | 61.00mm × 61.008mm |
| Dimension Parameters | Effective Key Area | 54.00mm × 51.00mm |
| Dimension Parameters | Mounting Structure | 4 round fixing holes at four corners, supporting screw panel mounting |
| Electrical Control | Row & Column Definition | 4 rows ROW1~ROW4, 4 columns COLUMN1~COLUMN4 |
| Electrical Control | Scanning Logic | Pull down row pins, collect level via column pins to identify keys, low-level trigger |
| Electrical Control | Key Type | SMD tactile switch with clear pressing feedback |
| Application Scenarios | Typical Uses | MCU digital input, electronic password lock, simple equipment control panel, teaching experimental devices |
| Packaging Solution | Optional Packaging | ① Anti-static bag soft package ② White cardboard hanging hole box ③ Kraft paper box |
