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Voice Recorder Chip
Looking for a high-performance Voice Recorder Chip that’s compact, cost-effective, and feature-rich? The NVF04M is built for powerful audio processing, offering low power consumption, flexible I/O control, and PWM output for direct speaker driving. With built-in DAC, USB, UART, and SPI, this chip is engineered to meet today’s demands for smart voice control and embedded audio playback in IoT, consumer electronics, and more.
Flexible, High-Performance for Embedded Audio Applications
Unleash High-Performance Audio in a Single Chip
Discover the NVF04M Voice Recorder Chip – a powerful solution with a 32-bit core CPU running at 160MHz, integrated USB1.1, SPI, UART, and 0.5W PWM speaker drive. Whether it’s IoT, smart toys, or home automation, this chip is ready to deliver.
Packed With Features, Ready for Innovation
- Dual DAC & PWM audio output, perfect for clear, crisp voice playback.
- Ultra-low power standby mode (under 2uA) ensures extended battery life.
- 8 Programmable I/Os, dual UART, and SPI with DMA offer ultimate control flexibility.
- Internal watchdog, LVR reset, and internal oscillators mean reliable, consistent performance.
Designed to Fit Seamlessly Into Your Design
With only 3 coupling capacitors needed, the NVF04M-16S simplifies your circuit design. Use one-wire/two-wire/three-wire serial control, enjoy real-time BUSY state output, and benefit from re-programmable memory. Whether you’re a developer or a product manager, this chip gives you the power to customize and adapt on the fly.
Start Building Smarter Audio Products Today
Ready to bring your ideas to life? Choose the NVF04M Voice Recorder Chip and experience reliable performance, rich audio features, and developer-friendly design. Contact us now to request samples or technical support!
Comparison Table: NVF04M-16S vs Competitors
| Feature | NVF04M-16S | APR9600 (APLS) | ISD1820 (Nuvoton) | WT588D (Waytronic) |
|---|---|---|---|---|
| Core Architecture | 32-bit MCU @160MHz | Analog IC | 8-bit MCU | 8-bit MCU |
| Storage Type | SPI Flash (external) | Internal EEPROM | Internal EEPROM | Internal/External SPI Flash |
| Audio Output | PWM + 16-bit DAC, supports 0.5W speaker | Direct analog (no DAC) | PWM only | 12-bit DAC + PWM |
| Control Interfaces | UART, SPI, USB, Key, Serial | Keypad control only | Button control only | UART, Key, One-line, SPI |
| Power Supply | 3.0V–5.0V | 5.0V only | 3.0V–5.0V | 3.0V–5.0V |
| Standby Current | <2uA (ultra-low power) | High (not optimized) | Moderate | ~5uA |
| Voice Playback Quality | High – 16-bit DAC & configurable | Poor to fair | Fair | Good – 12-bit DAC |
| Voice Storage Flexibility | Online programming, customizable | Pre-recorded only | Re-recordable but fixed duration | Highly flexible |
| Busy Output Pin | Yes | No | No | Yes |
| Watchdog & LVR Reset | Yes | No | No | Some versions only |
| Smart Home Suitability | ★★★★★ | ★★ | ★★ | ★★★★ |
What Are Common Use Cases in Smart Appliance Integration?
The NVF04M Voice Recorder Chip is ideal for a wide range of smart appliance applications where voice prompts, audio feedback, or alerts enhance user experience and functionality. Below are common use cases in smart appliance integration:
Voice Prompts for User Interaction
- Smart Ovens / Microwaves:
“Preheating complete,” “Cooking started,” or “Door is open” voice alerts.
- Washing Machines / Dryers:
Audio prompts like “Cycle complete,” “Add detergent,” or error messages.
✅ Why NVF04M?
High-quality DAC + PWM output allows crisp, clear playback of short voice files for instructions or notifications.
Audio Alerts for Warnings & Safety
- Refrigerators / Freezers:
“Door is ajar,” or “Temperature too high” warnings.
- Induction Cooktops / Gas Stoves:
Voice alerts for “No pot detected,” or “Gas leak detected.”
✅ Why NVF04M?
Busy output pin and ultra-low power standby mode make it perfect for event-triggered alerts in always-on devices.
Smart Control Panels with Human Feedback
- Air Conditioners / Heaters:
Feedback such as “Fan speed: High,” “Temperature set to 72°F.”
- Water Heaters / Purifiers:
Spoken confirmation: “Purification started,” or “Filter needs replacement.”
✅ Why NVF04M?
Easy integration via UART/SPI and flexible voice control logic to fit into MCU-based smart control systems.
Repeatable, Programmable Notifications
- Robot Vacuum Cleaners / Smart Mops:
“Cleaning in progress,” “Battery low,” or “Returning to dock.”
- Smart Dishwashers:
“Cycle complete,” “Add rinse aid,” or troubleshooting tips.
✅ Why NVF04M?
Online burning and reprogrammable memory make it easy to update voice prompts post-production, ideal for product lifecycle flexibility.
Simplified UI for Elderly or Visually Impaired Users
- Appliances with fewer buttons can rely on voice feedback instead of screens, improving accessibility.
✅ Why NVF04M?
One-wire / two-wire / three-wire serial control modes support simple UI designs with minimal circuitry.
Summary of Smart Appliance Use Cases:
| Appliance Type | Voice Functions |
|---|---|
| Smart Refrigerator | Open-door alert, temperature warnings |
| Washing Machine | Cycle notifications, error prompts |
| Microwave / Oven | Preheat complete, safety alerts |
| Robot Vacuum | Status updates, battery low |
| Air Purifier / AC | Mode change confirmation, filter reminders |
| Dishwashers | Wash complete, maintenance alerts |
| Smart Cooktop | Safety voice feedback, temperature set confirmation |
Sample Voice Prompt Codes
Below is a list of sample voice prompt codes and their corresponding voice messages, ideal for smart appliance integration using the NVF04M-16S Voice Recorder Chip.
These codes can be mapped to physical buttons, UART commands, or serial instructions, depending on your control method.
Sample Voice Prompt Code Table
| Voice Code (Hex/Decimal) | Voice Prompt | Use Case Example |
|---|---|---|
0x01 / 001 | “Power on.” | Appliance startup |
0x02 / 002 | “Power off.” | Appliance shutdown |
0x03 / 003 | “Function activated.” | Any mode toggle (e.g., Eco, Turbo) |
0x04 / 004 | “Please close the door.” | Smart refrigerator, oven, washer |
0x05 / 005 | “Cycle complete.” | Washing machine, dishwasher |
0x06 / 006 | “Filter needs replacement.” | Air purifier, water purifier |
0x07 / 007 | “Temperature set to 72 degrees.” | Air conditioner, heater |
0x08 / 008 | “Battery low.” | Robot vacuum, portable devices |
0x09 / 009 | “Cleaning in progress.” | Robot vacuum, smart mop |
0x0A / 010 | “Cooking started.” | Smart oven, microwave |
0x0B / 011 | “Cooking complete.” | Smart oven, microwave |
0x0C / 012 | “Add detergent.” | Washing machine |
0x0D / 013 | “Water level low.” | Humidifier, water dispenser |
0x0E / 014 | “System error. Please check the manual.” | General appliance error |
0x0F / 015 | “Child lock activated.” | Washing machine, oven |
0x10 / 016 | “Voice mode on.” | Voice control mode activation |
