The NVC series voice chip supports a set of PWM output ports, which can directly push the 0.5W speaker, built-in LVR reset, internal frequency frequency vibrator (maximum+-1%error). The connection method of the docking, as well as the main control MCU first -line serial control method, and supports 220 -foot sound chip with 220 stages, 44100 sampling rate.

★ OTP storage format, fast production cycle, only one day as soon as possible, there is no minimum limit on the order;

★ Flexible multi -key operation mode and level output method for selection (edge button trigger, level trigger, random keys play, sequential button playback);

★ Simple and convenient first -line MCU serial port and two -line MCU control methods. The user controls MCU to control the trigger play and stop of any paragraph voice;

★ The voice time is 20 seconds, 40 seconds, 80 seconds, 180 seconds;

★ Built -in a set of PWM outputs can directly push the 0.5W speaker, support the 13bit DAC output, which can be an external simulation amplifier;

★ Support 8 -level sound adjustment, support cycle playback and other functions;

★ Flexible sounding operation can save voice space by combining, and can play up to 220 voice combinations;

★ The sound quality is beautiful, the performance is stable, the quality is cheap, and the static current is less than 2UA;

★ Built -in LVR self -reset circuit to ensure the normal work of the chip;

★ DIP8, SOP8, SSOP20, and COB various packaging to choose from, convenient use, flexible application;

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

★ The peripheral circuit is simple, only one coupling capacitance is required;

★ Work voltage range: 2V ~ 4.5V of SOP8; SSOP20 is 2V ~ 5.5V.

★ IO mouth is rich, built -in MCU, you can customize various special functions;

Remark:

1. The length of the voice is based on the 6K sampling rate. Generally, the sampling rate in the application is 8K, so the voice length is only for reference;

2. All ICs of all seconds support chord playback;

The NVC series voice chip has a wealth of control. It is divided into key control module D9 download stations and MCU front -line serial control mode. The key control module is divided into ON/OFF control, pulse can be repeated trigger, pulse non -repeated trigger, level maintenance trigger, level non -maintained trigger, DOWN's next song, random section trigger. When a port is triggered by the MCU front line, it cannot be triggered as a button at the same time.

① Key control module

Key control mode: The defined pipe foot can directly touch the chip sound, that is, each pin can control a paragraph. The trigger method of each switch can be set separately, and the anti -shake time of the keys control mode is 17ms

② Port allocation

The NVC series voice chip has a wealth of control. It is divided into key control module D9 download stations and MCU front -line serial control mode. The key control module is divided into ON/OFF control, pulse can be repeated trigger, pulse non -repeated trigger, level maintenance trigger, level non -maintained trigger, DOWN's next song, random section trigger. When a port is triggered by the MCU front line, it cannot be triggered as a button at the same time.

① Key control module

Key control mode: The defined pipe foot can directly touch the chip sound, that is, each pin can control a paragraph. The trigger method of each switch can be set separately, and the anti -shake time of the keys control mode is 17ms

② Port allocation

② The corresponding relationship between data and voice

It can support the sending of 223 sounds and commands. The format of voice address sending and command sending is the same, and each other is independent of each other.

NVC series voice chips are suitable for occasions where various voice prompts, such as: blood pressure meter, attendance machine, blood glucose meter, medical device, massage device, footbath, doorbell bottom , Reading Buddhist machines, gaming machines, craft gifts, smart locks (fingerprint locks, password locks, swiping card locks), codes scanning machines, and so on.