Hw-044 - Datasheet
Due to its reliability and small footprint, the HW-044 is frequently used for:
| Pin Name | Function | |----------|--------------------------------------------| | VCC | 5V power supply input. | | GND | Ground. | | DIN | Serial Data Input (MOSI from master). | | CS | Chip Select / LOAD (latches data into registers). | | CLK | Serial Clock (up to 10 MHz typical). |
: Most HW-044 variants include an onboard LED (often labeled D1) that serves as a power indicator . hw-044 datasheet
4x 0.1µF charge-pump capacitors, 1x Power LED indicator, 1x DB9 Female Serial connector
Connecting this module is straightforward. Here's how to set it up with an Arduino Uno: Due to its reliability and small footprint, the
) to communicate with low-voltage microcontrollers like Arduino, ESP32, or STM32 (which operate at 3.3V3.3 cap V Technical Specifications
On most HW-044 boards, these pins are labeled directly on the PCB silk screen. If not, identify GND and VCC first (often the two outer pins or the pair closest to the board edge). | | CS | Chip Select / LOAD (latches data into registers)
Since you cannot download a specific datasheet, here is what you need to know for hardware integration and potential alternatives.
Connects to the positive power input of your load/project circuit.
Connects to the TX pin of your microcontroller.