Overview
The WT2000P4 is a powerful and cost-effective voice recorder chip featuring a RISC-V 32-bit processor capable of reaching up to 100 MHz. The chip includes audio-specific acceleration instructions and supports various audio codec algorithms. It can directly drive an 8-ohm 0.5W speaker and offers a variety of peripheral interfaces, making it highly suitable for applications involving audio playback and recording.
Functional Overview
- Operating voltage: 2.4-5.0V;
- Supports MP3, S1A, MIDI, ADPCM decoding;
- Supports DVC digital volume control;
- Built-in 12-bit high-precision ADC module, supporting high-quality recording function;
- Recording supports 16kHz sampling, MP3 compression, selectable compression bit rate of 8/16/24/32/40/56/64kbps;
- Supports low power detection/reset;
- Supports watchdog interrupt/reset;
- Supports 16-bit PWM output, directly driving an 8-ohm 0.5W speaker;
- Supports IIC, UART hardware communication interfaces;
- Supports VAD voice activity detection, reverb, howl suppression, pitch change, noise reduction algorithms;
- Built-in 2 programmable PWM channels;
- Built-in 32kHz low-power RC oscillator;
- Deep sleep current: 3μA, standby current: 30μA, operating current: 3mA (not playing)
Voice Recorder Chip Pin Description
| PIN-NO. | PIN Name | ATTR | Description describe |
| 1 | PWM-/P23 | I/O 5VT | The negative terminal of the horn/output pin |
| 2 | PWM+/P22 | I/O 5VT | The positive terminal of the speaker/output pin |
| 3 | VCC | P | Positive terminal of the power source |
| 4 | VOUT | P | LDO output |
| 5 | P26/MICLDO | I/O | Microphone power supply/Input-output port |
| 6 | P25/MIC- | I/O | MIC interface/IO port |
| 7 | P24/MIC+ | I/O | MIC interface/IO port |
| 8 | P06/P00 | I/O | I/O port/download port |
| 9 | GND | P | Power ground |
Note: I: Input, O: Output, P: Power Supply, 5VT: Withstands 5V voltage, other IO voltages refer to VOUT.
Voice Recorder Chip Circuit design reference
Minimum system reference circuit
Differential recording reference line
AD button reference circuit
Voice Recorder Chip Application block diagram
Music playback, recording, and audio output functions can be implemented on a single chip, equipped with ready-made solutions and demo boards, significantly shortening the development cycle and facilitating rapid product launch.
Application areas:
- 1. Dolls
- 2. Voice-changing magic microphone
- 3. Children’s recording story creation set
- 4. Recording greeting cards
- 5. Parent-child interactive recording message plush toys, etc.
