Application of NV040C voice chip in intelligent electronic devices

Electronic equipment refers to electronic components such as integrated circuits, transistors, and electron tubes. They generally include computers, air conditioners, refrigerators, washing machines, microwave ovens, printers, etc.

Electronic equipment also includes computers and robots controlled by computers, numerical control systems or program control systems, etc. For example, using a heater to adjust the temperature of a room can be considered a process, because its purpose is to make an output (in this case, temperature) reach an ideal value (for example, 20 degrees), and this output does not change over time.

In this example, temperature is a controlled variable, but if a thermometer is used to measure temperature and decide whether to heat, temperature is also an input variable.

Currently, most electronic devices are equipped with instruction manuals. We will read the manual when we first receive the product, but many functions are not often used, especially after a period of time, the manual can no longer be found. In order to allow users to better control electronic devices, many manufacturers will embed voice prompt functions in the devices!

NV040C chip electronic equipment voice solution

Jiuxin Electronics has developed an OTP voice IC solution specifically for electronic devices: the NV040C voice chip with beautiful sound quality and powerful functions can meet the basic voice prompt requirements of electronic devices.

NV040C electronic device voice solution, users can input standard UART commands through the main control MCU to adjust the PWM pulses required for the NV040C electronic device to work. Its PWM frequency and duty cycle can be set through commands.

The voice broadcast function, power-on prompt tone, power-off prompt tone, and sound effects when the device fails can all be set according to the instructions.

NV040C electronic equipment voice chip solution

Functions and features of NV040C chip

l Flexible multiple key operation modes and level output modes to choose from (edge ​​key trigger, level trigger, random key play, sequential key play);

l Simple and convenient one-line MCU serial port and two-line MCU control mode, the user's main MCU can control the triggering, playing and stopping of any segment of voice;

l A set of built-in PWM output devices can directly drive 0.5W speakers, support 13-bit DAC output, and can be connected to an external analog amplifier;

l Support 8-level volume adjustment, support loop playback and other functions;

l Flexible voice playback operation, which can save voice space by combining, and can play up to 220 voice combinations;

l Beautiful sound quality, stable performance, good quality and low price, static current is less than 2uA;

l Built-in LVR self-reset circuit to ensure the normal operation of the chip;

l Support 4-chord MIDI playback, the sound quality is very beautiful;

l The peripheral circuit is simple, only one coupling capacitor is required;

NV040C chip package diagram and pin correspondence table:

NV040C chip package diagram

NV040C chip pin correspondence table

Typical application circuit diagram of NV040C chip:

Button application diagram, PWM direct-drive speaker, VDD<4.5V circuit diagram

Button application diagram, PWM direct-drive speaker, VDD>4.5V circuit diagram

PWM output, VDD<4.5V, MCU one-line serial port circuit diagram, BUSY can be omitted as needed

PWM output, VDD<4.5V, MCU two-wire serial port circuit diagram, BUSY can be omitted as needed

NV040C can control multiple voice triggers at will. It is the only 8-pin chip on the market that supports 220 voice segments. It can play Chinese and English voices with beautiful sound quality. It is a popular and cost-effective voice chip in the current voice solution industry and is preferred by major manufacturers!