WT2003HP8-32N MP3 Player Chip | QFN32 Audio IC | Waytronic
Compact QFN32 Voice Chip with 701KB Built‑in Voice, 32‑Bit DSP & UART Control
The WT2003HP8-32N is a high‑performance, ultra‑compact QFN32 MP3 voice chip featuring a 32‑bit DSP up to 120MHz and the largest built‑in voice storage in the WT2003HX series – 701KB (approx. 350s at 16kbps MP3). It supports external SPI‑Flash, TF card, and USB drive storage. With UART control, 32‑level volume, a built‑in 0.5W Class‑D amplifier, and a tiny 4×4mm QFN32 package, it is ideal for space‑constrained applications requiring maximum voice capacity.
- 32‑bit DSP – 120MHz processing
- 701KB voice – largest capacity
- QFN32 – 4×4mm ultra‑compact
- 32‑level volume – with power‑off memory
- Built‑in 0.5W amp – direct speaker drive
WT2003HP8-32N Key Features
Specifications
| Parameter | Value |
|---|---|
| Package | QFN32 (4×4mm) |
| Processor | 32‑bit, up to 120MHz |
| Operating Voltage | 2.6V – 5.0V |
| Built‑in Voice | 701KB (~350s @ 16kbps MP3) |
| Audio Format | MP3, WAV (8–44.1kHz, 8–320kbps) |
| Audio Output | PWM (0.5W) / DAC |
| Volume Levels | 32 (0–31, power‑off memory) |
| External Storage | SPI‑Flash (128Mbit), TF (32GB), USB (32GB) |
| Control Interface | UART (9600 default) |
| Deep Sleep | < 5 µA |
| Operating Temp | ‑40°C ~ +85°C |
Key Pin Functions (QFN32)
| Pin | Name | Function |
|---|---|---|
| 2 | RXD | UART receive |
| 3 | LED3/KEY12/ADC0 | Multi‑function I/O |
| 4 | AGND | Analog ground |
| 5 | VREG | Coupling pin (105 cap to ground) |
| 6 | LED4/KEY13/DAC | DAC output |
| 7 | VOUT | External memory power |
| 8 | VCC | Power (2.6–5.0V) |
| 9 | VCC-SPK | Internal amplifier power |
| 10 | PWM+ | Speaker positive |
| 11 | PWM− | Speaker negative |
| 12 | BUSY | Busy signal (high during playback) |
| 15 | TXD | UART transmit |
| PAD | GND | Internal ground, must connect |
Applications
Frequently Asked Questions
What makes WT2003HP8-32N different from other models?
It has the largest built-in voice storage (701KB) and the smallest QFN32 package (4×4mm), offering maximum capacity in a compact footprint.
What is the built-in voice storage capacity?
WT2003HP8-32N provides 701KB of built-in voice storage, offering approximately 350 seconds at 16kbps MP3.
What storage media are supported?
It supports external SPI-Flash (up to 128Mbit), TF card (up to 32GB), and USB drive (up to 32GB).
Does it have a built-in amplifier?
Yes, it features a built-in 0.5W Class-D amplifier with PWM output. DAC output is also available with a command switch (B6).
How many volume levels are available?
32 levels (0 to 31), with 0 = mute and 31 = maximum volume. The setting has power-off memory.
What is the operating voltage range?
The chip operates from 2.6V to 5.0V, with ripple controlled within 5% and peak voltage below 5.5V.
What is the package of WT2003HP8-32N?
It comes in a compact 32-pin QFN (QFN32) package measuring just 4×4mm.
What audio formats are supported?
It supports MP3 and WAV formats with sampling rates from 8kHz to 44.1kHz and bitrates from 8kbps to 320kbps.
What playback modes are available?
Normal, single loop, all loop, random, insert playback, and chained playback.
What are the typical applications?
Compact voice prompt systems, portable devices, home appliances, automotive electronics, toys, and industrial alarms requiring high capacity in a small footprint.
Important: QFN32 package operates at 2.6–5.0V with 32 pins in a 4×4mm footprint. With 701KB built‑in voice, this is the highest‑capacity option in the WT2003HX series. PAD (pin 0) must be grounded. Control via UART with default 9600 baud. Deep sleep <5µA via B8 command.
