QFP-44 (Quad Flat Package 44-pin) is an SMD IC package with pins on all four sides at 0.8mm pitch, used for microcontrollers and DSPs requiring more I/O than DIP allows. Common on STM32 and AVR devices.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Pin 1 | Varies by IC (dot or chamfer marks corner) | I/O |
| 11 | Pin 11 | Side 1 last pin | I/O |
| 12 | Pin 12 | Side 2 first pin | I/O |
| 22 | GND | Ground pin | GND |
| 23 | Pin 23 | Side 3 start | I/O |
| 33 | Pin 33 | Side 3 last | I/O |
| 34 | VCC | Supply voltage | PWR |
| 44 | Pin 44 | Side 4 last pin | I/O |
QFP-44 (Quad Flat Package 44-pin) is an SMD IC package with pins on all four sides at 0.8mm pitch, used for microcontrollers and DSPs requiring more I/O than DIP allows. Common on STM32 and AVR devices.