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SYN6288
SYN6288
| Part Number | SYN6288 |
|---|---|
| Manufacturer | YuYin Tianxia Technology |
| Category | Integrated Circuits > Interface IC > Speech Synthesis TTS Chip |
| Description | High-performance offline Chinese TTS synthesis chip, UART serial control, built-in voice library, SSOP-28 package. |
| Stock Status | In Stock |
| Origin | original factory |
Product Overview
SYN6288 is an offline Chinese text-to-speech chip developed by YuYin Tianxia. It converts serial text data into natural analog audio without external flash storage. The built-in intelligent text parser supports multi-format Chinese coding, adjustable speech parameters and background music mixing. Compact SSOP-28 packaging fits voice broadcast equipment, industrial instruments and smart home terminals.
Core Advantages
Natural Clear Voice Output
Optimized synthesis algorithm delivers smooth pronunciation, multiple built-in timbres for selection.
All-Integrated Voice Library
No external flash required; all voice data and parsing logic stored inside the chip.
Simple UART Control Interface
Standard TTL UART communication, compatible with all mainstream 3.3V/5V MCU systems.
Flexible Audio Parameter Adjustment
Support independent adjustment of volume, speech speed and pitch to meet different broadcast scenarios.
Key Specifications
| Brand | YuYin Tianxia |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free |
| EDA/CAD Model | Schematic symbols, 3D component files, and 28-pin SSOP landing footprints are available on request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | SSOP-28 |
| Mounting Type | Surface Mount |
| Surface Marking / Silkscreen | SYN6288 Marking |
| Communication Interface | Asynchronous Serial Interface (UART / TTL Level, 8N1 data format) |
| Supported Baud Rates | 9600 bps, 19200 bps, 38400 bps (Default factory baud rate: 9600 bps) |
| Text Coding Standard | GB2312, GBK, BIG5, UNICODE, UTF-8 native decoding support |
| Audio Output Channels | Single-ended mono analog audio output (Direct drive for headphones or low-power amplifiers) |
| Operating Voltage (VCC) | 3.0V to 5.5V wide working voltage support, compatible with 3.3V & 5V MCU systems |
| Operating Current | Max 50mA during speech synthesis; ultra-low standby current less than 1μA under sleep mode |
| Operating Temperature Range | -20°C to +70°C (Commercial standard temperature range) |
| Volume Adjustment Level | 0~15 volume grades, 0 for mute, 15 for maximum volume |
| Speech Speed Range | 50~300 words per minute adjustable |
| Pitch Tuning Range | ±20% pitch adjustment; partial firmware supports -10 ~ +10 semitone fine-tuning |
| Built-in Voice Timbre | Male voice, female voice, child voice, switchable for specific firmware versions |
| Max Single Transmission Text Length | 1024 bytes; split transmission recommended with each segment less than 200 bytes |
| UART Protocol Header | Fixed header 0xFD; partial versions adopt dual-byte header 0x00 0xFD |
| Status Feedback Pin | BUSY pin: High level during synthesis, low level when idle; serial return completion code 0x41 |
| Audio Output Mode | PWM direct drive (8Ω/0.5W speaker) or DAC analog output (external op-amp required) |
| Background Music Mixing | Support built-in background music mixing with synthesized voice audio |
Typical Applications
- Queue calling system, bank counter voice broadcast terminals
- Vehicle navigation voice reminder, bus stop announcement equipment
- Smart home voice alarm, intelligent water & electricity meter prompt
- Industrial equipment fault voice alert, testing instrument voice output
- Self-service payment kiosks, POS machine voice notification system
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipment Lead Time | Ship within 1-2 working days after payment confirmation |
| Global Delivery Time | 3-7 working days subject to logistics route |
| Shipping Carriers | DHL, UPS, FedEx, EMS Express |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
Submit inquiry form to request datasheets, sample supply, stock check and bulk quotation, all messages will be replied within 24 hours.
Frequently Asked Questions
Q1: Does SYN6288 require external Flash memory to store voice library?
A1: No, the complete voice library and text parsing algorithm are built into the chip internal memory, only text data needs to be transmitted via UART without extra flash circuit.
Q2: How to match IO level when using 5V main controller with SYN6288?
A2: TXD pin of 5V MCU needs voltage divider resistors (2.2kΩ + 4.7kΩ) to reduce signal to 3.3V, to avoid damaging chip IO ports.
Q3: What power filter design is recommended for stable voice output?
A3: Connect 0.1μF ceramic capacitor and 10μF electrolytic capacitor in parallel between VCC and GND, power supply ripple shall be controlled below 50mV.
Q4: Why garbled voice text appears after sending UART command?
A4: The text encoding must match the encoding header specified by command, mismatched GB2312/UTF-8 will cause garbled characters.
Q5: What interval should be reserved between two consecutive UART commands?
A5: Keep more than 8ms interval between two commands; wait over 16ms after modifying baud rate before sending new instructions.
Q6: Can the chip directly drive loudspeakers without external amplifier?
A6: It can directly drive 8Ω/0.5W speakers under PWM mode; external audio amplifier chip such as LM386 is required for high-power speakers.
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