HLK-V40 speech synthesis module TTS pure text to speech playback

The V40 speech synthesis module is a cost-effective voice interaction solution launched by Hilink, which can realize the integration of XT804, WLAN MAC/Baseband/BLE4.2 in the UART communication module, with a central frequency of up to 240MHz, built-in 288KBRAM and 2MB FLASH. It has rich peripheral resources, including UARTPWM, SPI, GPIO, etc.

Product Features:
• Support 802.11b/g/n standard, integrate XT804, WLAN MAC/Baseband/BLE 4.2
• The main frequency supports 240MHz
• Built-in 288KB RAM/ 2MB FLASH
• Working voltage 4.5-5.5V, typical value 5v
• 2.4G/1T1R wifi, BLE 4.2
• Support BLE fast network configuration
• Support Station, Soft AP,
• Supports 802.11b/g/n standards, HT-40
• Support AP, STA, and BLE mixed mode
• Abundant peripheral interfaces, 1*SPI, 2*UART, 5*PWM, 18*GPIO
• Widely used in IoT
• Voice broadcast, digital dynamic broadcast

Technical specifications:

Basic information:

Wireless standard	IEEE 802.11b/g/n, BLE4.2
Frequency Range	2.412GHz~2.484GHz
transmit power	15~21dBm
Receiver sensitivity	-73~-93dBm
Antenna type	IPEX external antenna
Memory/Flash	288KB/2MB

Hardware parameters:

Hardware interface	UART/GPIO/PWM//SPI/ADC
Operating Voltage	5V(±0.5V)
Power consumption	Average current 150mA, peak 400mA
Operating temperature	-40℃~+85℃
Storage environment	-40℃~+125C/10%~90%R.H.
Physical dimension	26.7x16x2.8mm

Voice parameters (can support custom development):

Way of communication	UART serial port baud rate 115200
Text encoding	GB2312
Composite support	Chinese text/English alphabet (pronounce the word according to the letter)
Text capacity	The amount of single synthesized text is within 100 words/can be customized
Operation method	Send AT command/can broadcast according to entry number

Function hint:

Pin function introduction:

Pin	Network name	Type	illustrate
1	PA0/BOOT	I/O	Programming mode pin, low level enable
2	PB0	I/O	PB0
3	PB1	I/O	PB1/WiFi indicator pin
4	PB2	I/O	PB2/ESO
5	PB3	I/O	PB3
6	SP1		Normal audio output
7	SP2		Inverted audio output
8	5V	P	5V power supply
9	PB4	I/O	PB4
10	RESET	I	Reset pin, low-level reset
11-14	NC		/
15	GND		GDN
16	PB5	I/O	PB5
17	RX0/PB20	I/O	RXO, for upgrading
18	TX0/PB19	I/O	TX0, for upgrade
19	MIC-		Microphone negative
20	MIC+		Microphone positive
21	RX1/PB7	I/O	UART1, command setting, and transparent transmission
22	TX1/PB6	I/O	UART1, command setting, and transparent transmission

*Output power 1.15W 8Ω load; if you need to connect a speaker, you need to connect an external power amplifier circuit.

Application scenario:
It can be widely used in Internet of Things voice broadcasting scenarios, such as cash collection broadcasting equipment, access control voice prompts, vehicle access channel voice prompts, business hall voice prompts, traffic hub security inspection prompts, automatic broadcasting equipment, etc.