Hangshun Touch Control MCU | BeiLuo Distributor

About Touch Control MCU

Hangshun Touch Control MCUs integrate advanced capacitive touch sensing technology with powerful 32-bit ARM Cortex-M cores. These specialized MCUs support up to 24 capacitive touch channels with high sensitivity, enabling touch buttons, sliders, wheels, and proximity sensing through various overlay materials including glass, plastic, and acrylic up to 5mm thick. The integrated touch controller features water rejection technology for reliable operation in wet environments, making them ideal for kitchen appliances and outdoor applications. With ultra-low power consumption of less than 10μA per channel in standby mode and wake-on-touch capability, these MCUs are perfect for battery-powered devices. Advanced touch algorithms provide fast response time under 10ms and excellent noise immunity with ESD protection up to ±8kV contact discharge. The touch library simplifies development with automatic calibration, gesture recognition, and waterproofing algorithms. Applications include home appliance control panels, industrial HMI interfaces, consumer electronics, medical devices, and automotive interiors.

As an authorized distributor of Hangshun, BeiLuo provides a comprehensive range of Touch Control MCU products. These products are widely used in industrial control, automotive electronics, consumer electronics, and communication equipment. We offer a complete product line with multiple series to meet various application requirements. All products are genuine and original, backed by professional technical support and comprehensive after-sales service.

Selection Guide: How to Choose the Right Touch Control MCU

Product List

2 products available

Part Number ↕	Core ↕	Frequency ↕	Touch Channels ↕	Sensitivity ↕	Wake Current ↕	Package ↕	Stock Status	Action
HS32T016C8T6	ARM Cortex-M0	48 MHz	16	Up to 5mm glass	<10μA	LQFP48	In Stock	View Details
HS32T024RGT6	ARM Cortex-M0+	64 MHz	24	Up to 6mm glass	<8μA	LQFP64	In Stock	View Details

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Frequently Asked Questions

How many touch channels do I need for my application?

The number of touch channels required depends on your user interface design: 1) Simple buttons - Each physical button requires one touch channel

typical home appliance panels need 4-12 buttons (power, mode, timer, +/-, etc.)

2) Sliders - Linear sliders typically use 3-5 channels for smooth position detection

circular sliders (wheels) use 4-8 channels

3) Keypads - Matrix keypads can share channels with time-multiplexing

a 3x4 keypad can use 7 channels (3 rows + 4 columns) instead of 12

4) Proximity sensing - Requires 1-2 channels for wake-on-approach functionality

5) Reserved channels - Add 10-20% extra channels for future expansion. Common configurations: Simple appliance (4-6 buttons): 6-8 channels

Washing machine panel (8-12 buttons + slider): 12-16 channels

Advanced HMI (buttons + slider + wheel): 16-24 channels. Hangshun touch MCUs offer 6, 12, 16, and 24 channel variants. It's better to select a part with slightly more channels than needed to accommodate design changes.

Count your buttons and sliders; add 20% margin; select nearest channel count variant (6/12/16/24 channels).

What overlay materials work with Hangshun touch MCUs?

Hangshun touch MCUs support various overlay materials with different thickness capabilities: 1) Plastic/Acrylic - Best sensitivity

supports up to 5mm thickness

commonly used for appliance panels

lowest cost option

2) Glass - Premium appearance

supports up to 4mm thickness

requires higher sensitivity setting

tempered glass recommended for durability

3) Ceramic - High-end aesthetic

supports up to 3mm thickness

used in premium kitchen appliances

4) Wood - Natural appearance

supports up to 2mm thickness

requires careful design due to moisture absorption

5) Metal - Only for proximity sensing (not direct touch)

metal must have cutouts behind touch areas. Material properties affecting performance: Dielectric constant (higher = better coupling)

Thickness (thicker = lower signal)

Uniformity (variations cause sensitivity differences)

Moisture absorption (affects stability). For best results: Keep overlay thickness uniform

Minimize air gaps between sensor and overlay

Use adhesive with consistent thickness

Design ground plane to reduce noise pickup. Water rejection algorithms enable reliable operation even with water droplets on the surface.

Use plastic/acrylic for cost-sensitive; glass for premium; ensure uniform thickness and proper bonding.

How does water rejection technology work on Hangshun touch MCUs?

Hangshun touch MCUs implement advanced water rejection technology for reliable operation in wet environments: 1) Problem - Water on touch surface creates capacitive coupling similar to finger touch, causing false triggers

2) Detection method - Hardware detects water presence by measuring capacitance distribution across multiple channels

water creates different capacitance pattern than finger

3) Rejection algorithm - Software algorithms distinguish between water film and valid touch

water typically affects multiple adjacent channels simultaneously

finger touch has localized signature

4) Shielding - Guard ring around touch pads reduces water interference

driven shield maintains constant voltage to reduce water coupling

5) Dynamic threshold - Touch threshold automatically adjusts based on environmental conditions. Water handling capabilities: Light spray/mist - Full rejection, normal operation

Water droplets - Rejection with continued valid touch detection

Water stream - May cause temporary disablement until water clears

Submersion - Not recommended (IP rating dependent on enclosure). Applications benefiting from water rejection: Washing machines, dishwashers, kitchen appliances, outdoor panels, bathroom controls. The water rejection feature is configurable via touch library parameters.

Enable water rejection for kitchen/outdoor applications; configure sensitivity based on expected water exposure level.

What is the power consumption of touch sensing in standby mode?

Hangshun touch MCUs offer ultra-low power consumption for battery-powered applications: Active scanning mode - 50-100μA per channel at 10Hz scan rate

depends on sensitivity setting and overlay thickness

Sleep with wake-on-touch - 5-10μA total for all channels

MCU in deep sleep, touch controller in low-power mode

Wake-on-touch detection - <100ms response time from sleep to active

Proximity sensing - 20-30μA for 1-2 proximity channels

Periodic scanning - Adjustable scan interval from 10ms to 1s

longer intervals reduce power. Power optimization techniques: Reduce scan frequency in standby (e.g., 5Hz instead of 50Hz)

Use proximity wake-up to enable full touch only when hand approaches

Disable unused channels

Optimize sensitivity (higher sensitivity = higher power)

Use sleep mode between scans. Example power budgets: 6-button remote control (wake-on-touch): <10μA standby

12-channel appliance panel (active): 500μA

24-channel HMI with proximity: 30μA standby. For battery applications, the touch MCU can operate for years on coin cell batteries with proper power management.

Use wake-on-touch for battery applications; reduce scan frequency in standby; enable proximity wake-up.

How do I design touch sensor PCBs for Hangshun touch MCUs?

PCB design for capacitive touch sensors requires attention to several factors: 1) Sensor shapes - Circular pads for buttons (8-12mm diameter)

Interlocking triangles for sliders

Concentric circles for wheels

2) Trace routing - Keep traces short (<100mm) to reduce parasitic capacitance

Route traces on opposite side from touch pads

Use 0.2-0.3mm trace width

Maintain 0.5mm spacing between traces

3) Ground plane - Solid ground plane on layer below touch pads

Keep 0.5-1mm gap between sensor and ground

Use hatched ground (not solid) directly under sensors for better sensitivity

4) Shielding - Add guard ring around sensors, driven at same potential

Reduces noise and improves water rejection

5) Components - Place MCU close to sensor array

Minimize vias in touch traces

Use low-ESR bypass capacitors near MCU. Material considerations: Standard FR-4 works well

Thinner PCBs (0.8-1.0mm) provide better sensitivity

Keep overlay material consistent. Testing recommendations: Verify sensitivity with actual overlay material

Test with water droplets if water rejection required

Check for false triggers in noisy environments.

Keep traces short; use hatched ground under sensors; add guard ring; test with actual overlay material.