Hw-044 Datasheet < Recent × 2024 >

The is a highly efficient, dual-channel serial level shifter board powered by the Texas Instruments or Maxim Integrated MAX3232 IC . It translates high-voltage RS232 signals (up to ±15V) down to safe TTL/CMOS levels (3.3V or 5V) . This makes it a core bridge for linking modern microcontrollers like Arduino, ESP32, and Raspberry Pi with legacy computers, industrial instruments, and specialized serial equipment. 📋 Comprehensive Specifications

Output Enable (Active Low). Tied low to enable output permanently Functional Description & Internal Logic Frequency Scaling Truth Table (For S0/S1)

Typically features a simple 4-pin header (VCC, GND, TXD, RXD) for the TTL side and a DB9 or similar connector for the RS232 side. Cons:

Features a DB9 female connector (typically wired as DCE) for the RS232 side and header pins (VCC, GND, TXD, RXD) for the TTL side. hw-044 datasheet

To read data from the HW-044 using an Arduino, map the digital pins to handle both the configuration outputs and the incoming frequency pulse stream. Connect on the HW-044 to 5V on the Arduino. Connect GND on the HW-044 to GND on the Arduino.

| 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). |

To help us tailor the perfect schematic or software script for your application, what specific (e.g., Arduino, ESP32) and what legacy RS232 device are you currently trying to connect? Share public link The is a highly efficient, dual-channel serial level

For further reading, explore the datasheets of the ADC inside your microcontroller (e.g., ATmega328P for Arduino Uno) to understand how sampling rate and reference voltage affect joystick precision.

Connect on the HW-044 to Digital Pin 3 (Configured as TX via SoftwareSerial).

HW-044 Datasheet: Comprehensive Guide to the MAX3232 RS232-to-TTL Converter Module To read data from the HW-044 using an

A: Yes, the MAX3232 chip is designed for 3.3V to 5V systems, making it the ideal choice for modern 3.3V microcontrollers like ESP32 or STM32.

Internally, the circuit is simple:

Example registers: