Key facts
- Manuals
- 1
- Languages
- ZH
- Last added
- 2026-09-30
Featured Huashi manuals
Huashi HS520A RFID Reader Module User Manual
The HS520A is a simple serial RFID read/write module that uses a CMOS‑level UART interface to communicate with microcontrollers such as MCU, ARM or a PC serial port. The document explains the module’s pin functions, electrical characteristics and the serial communication protocol used between the host and the module.
It also provides a complete command set, status codes, and guidance on using a serial debug tool to develop and test applications, including card authentication, data read/write and electronic wallet operations. This manual is written in Chinese.
Covers: Scope · Module Overview · Pin Description · Technical Specifications · Serial Communication Protocol · Control Character Definitions
Latest Huashi manuals
Huashi HS520A RFID Reader Module User Manual
User Manual 16 pages · 413 KB · ZHThis manual describes the HS520A RFID reader module, its pinout, UART interface, command set and operation procedures for ISO14443A cards.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Huashi manuals
How do I set the UART baud rate?
Send the command 0xA1 to the module to configure the UART baud rate.
How can the module be woken from sleep?
Pull the WA_UP pin low; the module will wake and reset immediately.