WT2000P4-8S Recording Voice Chip
Record, Store, Playback & Amplify – All in One IC
The WT2000P4-8S is a cost‑effective, all‑in‑one voice chip that integrates recording, storage, playback, and a built‑in amplifier in a compact ESOP8 package. Powered by a RISC‑V 32‑bit processor running at up to 100MHz, it supports MP3 recording with selectable bitrates, 16bit PWM output for direct 8Ω 0.5W speaker drive, and 3Mbit Flash for voice storage. With 4‑key control, ultra‑low standby current (3µA), and support for VAD, echo cancellation, and noise reduction, it is the ideal solution for voice recorders, toys, security systems, and more.
- All‑in‑one – Record, store, playback, and amplify in one chip
- RISC‑V 32‑bit core – Up to 100MHz processing power
- MP3 recording – 8–64kbps selectable bitrates
- Direct speaker drive – 16bit PWM, 8Ω 0.5W
- Ultra‑low power – 3µA deep sleep, 30µA standby
WT2000P4-8S Key Features
Recording Time vs. Bitrate
| Bitrate | Flash Usage (per second) | Recording Time (no fixed voice) |
|---|---|---|
| 16 kbps | 2 KB | ~183 seconds |
| 24 kbps | 3 KB | ~122 seconds |
| 32 kbps | 4 KB | ~91 seconds |
| 40 kbps | 5 KB | ~73 seconds |
| 48 kbps | 6 KB | ~61 seconds |
| 56 kbps | 7 KB | ~52 seconds |
| 64 kbps | 8 KB | ~45 seconds |
Total Flash: 3Mbit. Recording time is reduced when fixed voice content is also stored in the Flash.
Key Control Functions
| Key | Function | Description |
|---|---|---|
| K1 (Record) | Record | Press and hold to start recording; release to stop. Beep on start/end. LED1 on during recording. Interrupts other functions. |
| K2 (Play) | Play recording | Short press to play the recorded file. Interrupts other functions and itself. |
| K3 (Voice) | Play fixed voice | Short press to play the current fixed voice track. Interrupts other functions and itself. |
| K4 (Next) | Next track | Short press to advance to the next track (loop). Plays the next voice. Interrupts other functions. |
Technical Specifications
| Parameter | Value / Condition |
|---|---|
| Operating Voltage | 2.4V – 5.0V |
| Processor | RISC‑V 32‑bit, up to 100MHz |
| Flash Memory | 3 Mbit (shared for recording & fixed voice) |
| Audio Output | 16bit PWM – direct 8Ω 0.5W speaker drive |
| Recording Format | MP3 @ 16kHz sample rate |
| Recording Bitrates | 8, 16, 24, 32, 40, 48, 56, 64 kbps |
| Decoding Formats | MP3, S1A, MIDI, ADPCM |
| Deep Sleep Current | 3 µA |
| Standby Current | 30 µA |
| Operating Current (no playback) | 3 mA |
| Communication Interfaces | IIC, UART |
| Special Features | VAD, echo cancellation, howling suppression, voice pitch shifting, noise reduction |
| Low‑Voltage Detection | Supported with reset |
| Watchdog | Interrupt and reset support |
| Operating Temperature | ‑40°C ~ +85°C |
| Package | ESOP8 |
Application Scenarios
Why Choose WT2000P4-8S
Frequently Asked Questions
What is the WT2000P4-8S?
It is a cost-effective all-in-one voice chip that integrates recording, storage, playback, and a built-in amplifier in a single ESOP8 package. It features a RISC-V 32-bit processor and supports MP3 recording and playback.
What are the key features of WT2000P4?
Key features include: RISC-V 32-bit core @ up to 100MHz, 16bit PWM output (8Ω 0.5W direct drive), MP3 recording with selectable bitrates (8–64kbps), 3Mbit Flash storage, 4-key control (Record, Play, Voice, Next), VAD, noise reduction, and ultra-low standby current of 3µA.
What recording formats and bitrates are supported?
Recording uses MP3 compression at 16kHz sampling. Bitrates available: 8, 16, 24, 32, 40, 48, 56, and 64 kbps. Higher bitrates deliver better quality but consume more storage space.
How much recording time is available?
With no fixed voice data, the chip offers approximately 183 seconds at 16kbps, 91 seconds at 32kbps, and 45 seconds at 64kbps. Recording time is reduced when fixed voice content is also stored in the 3Mbit Flash.
What audio output options are available?
The WT2000P4-8S chip features 16bit PWM output that can directly drive an 8Ω 0.5W speaker. It also supports DAC output and includes digital volume control (DVC).
What are the power consumption levels?
Deep sleep current: 3µA. Standby current: 30µA. Operating current (no playback): 3mA. This makes it ideal for battery-powered applications.
What is the operating voltage range?
The WT2000P4-8S chip operates from 2.4V to 5.0V, making it compatible with both 3.3V and 5V systems.
Does it support advanced audio processing features?
Yes. The WT2000P4-8S chip supports VAD (Voice Activity Detection), echo cancellation, howling suppression, voice pitch shifting, and noise reduction algorithms.
What communication interfaces are available?
WT2000P4-8S supports IIC and UART hardware communication interfaces for external MCU control.
What are the typical applications?
Voice recorders, toys, security systems, voice prompts, industrial alarms, home appliances, and any application requiring voice recording and playback with minimal external components.
Important: The chip requires a 24MHz crystal oscillator. VCC42 must not exceed 4.5V. The bottom pad (E-GND/PIN0) must be grounded. For Bluetooth functionality, design the antenna circuit accordingly. If Bluetooth is not used, the antenna circuit can be omitted. Storage priority: USB > TF card > SPI-Flash. Recording file naming uses a 24‑hour time format.
