WTN6 Series Voice Chips
Multifunctional, Low-Power CMOS Voice ICs with Multiple Control Modes
The WTN6 series (WTN6020, WTN6040, WTN6080, WTN6170) are high-performance CMOS voice chips offering flexible control options, ultra-low standby current, and high-quality audio output. With an internal oscillator accurate to ±1%, they require no external crystal.
- 4 models – 20s, 40s, 80s, 170s voice duration
- Multiple control modes – 1-wire, 2-wire, pulse-count, key
- PWM or DAC output – direct speaker drive or external amp
- Ultra-low standby – < 5µA
- 16-level volume and 224 address segments
Available Models
Key Features
Technical Specifications
| Parameter | Value / Condition |
|---|---|
| Operating Voltage | 2.4V – 5.2V |
| Standby Current | < 5 µA |
| Operating Current (VDD=3V) | ~3 mA (no load) |
| Operating Current (VDD=4.5V) | ~3.7 mA (no load) |
| Output Drive (PWM, VDD=3V, 8Ω) | 60 mA (PWM1) / 70 mA (PWM2) |
| Output Drive (PWM, VDD=4.5V, 8Ω) | 100 mA (PWM1) / 117 mA (PWM2) |
| I/O Pull-down | 1 MΩ (internal) |
| Oscillator Accuracy | ±1% internal |
| Voice Duration (models) | 20s (WTN6020) / 40s (WTN6040) / 80s (WTN6080) / 170s (WTN6170) |
| Max Addresses | 224 (00H – DFH) |
| Volume Levels | 16 (E0H min – EFH max) |
| Power-up Init Time | ~100 ms |
| Operating Temperature | ‑20°C ~ +85°C (functional to ‑40°C) |
| Low Voltage Reset | 2.0V (D/E versions) / 1.8V (B version) |
Control Interfaces
Application Scenarios
Why Choose WTN6 Series
Frequently Asked Questions
What are the different models in the WTN6 series?
The WTN6 series includes WTN6020 (20 seconds), WTN6040 (40 seconds), WTN6080 (80 seconds), and WTN6170 (170 seconds) of voice storage.
What control modes does the WTN6 series support?
It supports 1-wire serial, 2-wire serial, pulse-count (number of pulses), 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 operating voltage is 2.4V to 5.2V, with a low-voltage reset (LVR) at 2.0V (D/E versions) or 1.8V (B version).
What is the standby current consumption?
The standby current is less than 5µA. The chip enters standby automatically about 2 seconds after voice playback ends and the DATA/CLK lines remain stable.
What audio output options are available?
The chip provides 12-bit PWM output that can directly drive an 8Ω 0.5W speaker, and also supports DAC output for external amplifier connection.
How many voice addresses are supported?
It supports up to 224 voice addresses (00H to DFH). Each address corresponds to a voice segment.
Can I adjust the volume?
Yes, the chip provides 16-level volume control via commands E0H (minimum) to EFH (maximum). Volume adjustment can be done during playback, at stop, or in standby.
What is the initialization time after power-up?
The chip requires about 100ms for initialization after power-up, during which it cannot accept commands.
Does it support continuous (chained) playback?
Yes, using the F3H command, you can chain up to 10 segments (WTN6040/6080) or 40 segments (WTN6170). WTN6020 does not support chaining. An F8H command can insert silence between segments.
Are there any special considerations for the I/O pins?
The I/O pins have a built-in 1MΩ pull-down resistor. To reduce leakage current in standby, pull DATA and CLK low after playback ends. Also ensure a high level on DATA/CLK for at least 5ms before sending a command if they were low.
Important: The control mode and output type (PWM or DAC) are fixed during programming and cannot be changed. Please specify your requirements when ordering. For DAC output, the PWM- pin must be connected to a 1nF capacitor to ground. The chip requires ~100ms initialization after power-up before accepting commands.
