HLK-M50 RDA5981 Wireless Serial WIFI Module for Smart Home IoT Replace ESP8266

Project

Parameters

Memory System

Built-in RAM

96K Bytes User SRAM

32K Bytes icache

Built-in Flash

Built-in 8Mbit flash

Item

Parameter

GPIO

supports up to 17 GPIO ports, of which 16 can trigger interrupts

Serial performance

supports up to 2 serial ports, baud rate can be configured to 1200bps - 4Mbps

I2S Interface Features

Supports 2 I2S Interfaces; I2S Host BCLK Supports 96/192/384/512 / 44.1 / 88.2KHz; Supports 16/32 bit per channel, Data Format Configurable as 16/20 / 24bit or Software Configurable Maximum 24bit per channel)

I2C Interface Performance

Supports one I2C standard interface. Support master or slave operation.

There are 3 standard speed modes: 

1. Standard mode (<100Kb/s)

2. Fast mode (<400Kb/s)

3. High-speed mode (<3.4Mb/s)

PWM Interface Performance

Supports up to eight PWM interfaces; PWM cycle and duty cycle programmable, duty cycle can be configured between 0-100; cycle programmable, the software can choose a different clock to produce longcycles

SPI Interface

As the SPI host, up to 4 SPI slave; SPI clock programmable and maximum 20Mhz; data length can be configured by software, the maximum 64bit;

SDMMC Interface

Support 1 SDMMC interface

USB Interface

Support 1 USB interface