WT588F02B-16S (B2) Voice Chip
16‑Bit DSP Core with 65MHz Oscillation, 220KB Flash, and Versatile Control
The WT588F02B-16S (B2) is a high-performance 16‑bit DSP voice chip developed by Waytronic, featuring a 65MHz internal oscillator and 16‑bit PWM decoding. It offers flexible voice storage with a built‑in 220KB Flash – supporting 170 seconds of high‑quality audio or 320 seconds in standard mode. Unlike traditional OTP chips, it supports online voice replacement via a dedicated downloader, and provides multiple control interfaces including 1‑wire, 2‑wire, UART, pulse‑count, and key modes.
- 16‑bit DSP – 65MHz core, high‑performance processing
- 220KB Flash – 170s (HQ) / 320s (standard) storage
- PWM & DAC – 16‑bit PWM (8Ω 0.5W) + 15‑bit software DAC
- Multiple controls – 1‑wire, 2‑wire, UART, pulse, key
- Wide voltage – 2.2V–5.5V, low standby < 5µA
Key Features
Technical Specifications
| Parameter | Value / Condition |
|---|---|
| Operating Voltage | 2.2V – 5.5V |
| Standby Current | < 5 µA |
| Operating Current (no load) | ~5 mA |
| I/O Drive Current | 16 mA (strong drive, Vout = VCC‑0.4V) |
| I/O Internal Pull‑down | 50K / 220K / 1M (default 1M) |
| Oscillator Frequency | 65 MHz internal |
| Flash Memory | 220KB |
| Voice Storage | 170s (high quality) / 320s (standard) |
| Audio Formats | WAV, up to 24kHz sampling, 16‑bit depth |
| Audio Output | 16‑bit PWM (direct speaker) / 15‑bit DAC (external amp) |
| Power‑up Init Time | ~200 ms |
| Operating Temperature | ‑40°C ~ +85°C |
| Storage Temperature | ‑50°C ~ +150°C |
| Package | SOP16 |
Control Interfaces
Application Scenarios
Why Choose WT588F02B-16S (B2)
Frequently Asked Questions
What is the WT588F02B-16S (B2)?
WT588F02B-16S is a 16-bit DSP voice chip developed by Waytronic, featuring a 65MHz internal oscillator, 220KB Flash memory, 16-bit PWM output, and 15-bit software DAC. It supports multiple control modes including 1-wire, 2-wire, UART, pulse, and key.
What is the voice storage capacity?
WT588F02B-16S can store up to 170 seconds of high-quality voice content, or up to 320 seconds in standard quality mode, thanks to the built-in 220KB Flash.
What control interfaces are supported?
The WT588F02B-16S chip supports 1-wire serial, 2-wire serial, UART, pulse-count, and key (button) control modes. The control mode is fixed during programming and must be specified when ordering.
What is the operating voltage range?
The WT588F02B-16S chip operates from 2.2V to 5.5V, making it compatible with both 3.3V and 5V systems.
What audio output options are available?
WT588F02B-16S provides 16-bit PWM output that can directly drive an 8Ω 0.5W speaker, as well as 15-bit software DAC output for external amplifier connection.
What is the standby current?
The standby current is less than 5µA, making it suitable for battery-powered applications.
Can the chip be reprogrammed?
Yes. The WT588F02B-16S chip is Flash-based and supports repeated programming. The voice content can be updated in the field using a dedicated downloader.
What is the initialization time after power-up?
The WT588F02B-16S chip requires approximately 200ms for initialization after power-up, during which it cannot accept commands.
Does it support external SPI-Flash?
Yes, the WT588F02B-16S chip has a built-in hardware SPI interface that can connect to external Flash for expanded voice storage.
Are there any special considerations for pin connections?
Do not add a pull-up resistor to PC2, as it may cause the IC to enter a non-working mode. Also, ensure stable power supply (fluctuation <1.3V) during playback and initialization.
Important: The control mode is fixed during programming – specify when ordering. Do not add a pull-up to PC2. For external Flash applications, it is recommended to use 3.3V for VPD (Flash compatible), though VPD can be supplied separately at 5V for higher output. Ensure power supply fluctuations are < 1.3V during playback and initialization.
