Wt588f02b-8s (c006_03) single chip voice IC scheme enables smart doorbell design to reduce cost and increase efficiency

        When diversified intelligent products enter thousands of households , The intelligent doorbell industry continues to grow , Many kinds of smart doorbells appear on the market , While gaining the love of consumers , People are safe and reliable , The demand for smart doorbells with convenient operation is also increasing .

Doorbell manufacturers and intelligent doorbell scheme designers are intelligent according to consumers 、 Personalized demand to design products has become a mainstream trend . Ordinary doorbell scheme design , Need to pass through MCU+ Voice chip + Power down memory IC And other components to realize the intellectualization and personalization of the doorbell , Many devices represent the relatively complex circuit design , The circuit board is large , The high cost , High requirements for production and assembly process 、 High power consumption . And MCU To analyze 、 Study EV1527 Address , Commissioning, etc , It takes more time and energy for product design software engineers .

Weichuang bosom friend WT588F02B-8S（C006_003） Voice chip can quickly realize the intellectualization of engineers 、 Personalized design requirements , It can be done MCU analysis EV1527 Protocol and learning functions , Broadcast function with voice chip 、 And with EEROM Function to realize power down memory . It not only saves the cost to a great extent , And make product development easier , Shorten product development cycle , Lower overall cost , It solves the problem of low technical content of products at the present stage , Product homogeneity is serious , The price competition is very fierce . meanwhile WT588F02B Good voice and timbre effect .（C006_03 Is the code of this function product , Connect with Weichuang bosom friend , You can use this function code , Quickly find relevant products and materials .）

Let's take an application example ：WT588F02B The design scheme of intelligent doorbell is presented intuitively ：

WT588F02B Example of intelligent doorbell scheme design

1） Smart doorbell Program Overview

 

2） Device selection

3）

Position	model	Feature Overview
master control	WT588F02B	16 position DSP、32MHz、256KB-flash、 Rewritable 、…

a.  Schematic design

The key functions are as follows ：

IO Definition of mouth	PI0/K1	PI1/K2	PC2/led
Function definition	Short press ： Volume plus （4 level ） Great circulation , Play the current track at the same time	Short press ： Next song （ Great circulation ） Long press 3 second ：433 Pair learning （ When learning mode LED Flash , Determine success LED Long light for one second ,5 Seconds automatically exit the learning mode ）	Three flashing modes , When playing music , Slow flash . Flash ：6HZ Slow flash ：3HZ Changliang ：
	K1/K2 Press at the same time 3 second , Delete all learned codes , Delete successful LED Long light for one second

 

3） Application framework diagram

 

4）WT588F02B Basic functions and features

1.16 position DSP Voice chip 、32Mhz Internal oscillation ;

2. Working voltage 2.0~5.5V; Recommended voltage ：2.2~4.0V（ Due to the use of serial port TTL Level communication ）

3.16bit Of PWM Output , Can drive directly 8R 0.5W horn ;

4. Support 6K~32Khz Of WAV file , as well as MIDI file ;

5. Customers can download the test board to replace the internal voice content of the chip online ;

6. Inside the chip is 256K byte Storage space , Can do power down memory function 、 Data storage and other functions （ Extensible to users MCU Make cache space ）.

7. The chip master program and the built-in stored data can be erased and then burned .

8. Low voltage detection function , It can be set when the voltage is lower than a certain value , Make corresponding prompt

9.UART Communication protocol 、9600 Baud rate

10. with EV1527 Decoding function , And through UART take EV1527 The decrypted data is returned

11. At present, there are two groups EV1527 The address of . That is, one product can be paired with two groups of remote control addresses

12.MCU Can pass UART from WT588F Middle readout EV1527 Decoding address

EV1527 Introduction to standard protocols ：

Each time the code is sent, the high level is sent first , Post low level ,

Complete coding format ：

Synchronization code +bety1+bety2+bety3

bety1/bety2： Remote control address code ;

bety3： Key value code ;

Let's introduce WT588F02B How to use the chip ：

Usage method 1：（ There are already standard chips , Can be purchased directly ）

If I want to make a low-cost doorbell product quickly .

As shown above ;

function ：

1.  Wireless remote control triggers the doorbell to play

2.  The buttons can be used to adjust the volume 、 Doorbell track selection 、 Wireless remote control pairing and other functions

We can find out , We just need WT588F02B-8S（C006_03）, You can design a low-cost simple doorbell product .

Usage method 2：（ There are already standard chips , Can be purchased directly ）

My doorbell product is not simply triggered , There are other functions , You may even need MCU Do something .

No problem ,WT588F02B-8S（C006_03） You can use it like this ：

MCU Can pass UART（ Baud rate 9600） To control WT588F02B-8S（C006_03） Play music 、 Adjust the volume 、 Circulation and other functions , And it can also read the instructions of the wireless signal module , Address of the paired wireless module .WT588F02B It can also be open 256 Bytes to MCU For data storage （ You can read , Can write ）.

Usage method 3：

If you want to use WT588F02B Be the master MCU To develop all the functions , The star IC It's OK, too . There are 3 Kind of package ：SOP8、SOP16、SSOP24.

As a high-tech enterprise focusing on voice technology research , Always adhere to “ Good service engineers ” Target , Take the standardization of voice interaction devices in the industry as the direction , Committed to making complexity simple , Provide fast voice 、 Intelligent Internet of things application solutions .WT588F02B Application design , On the smart alarm clock 、 Smart water cup 、 There are mature application cases in the field of consumer electronics such as atomizer . The application of consumer electronic products is an important development field of the company , future , Weichuang Zhiyin will launch standardized voice chips in more industries , Further enhance the design experience of Engineers , Enabling standardization in the consumer electronics industry .