HS32S101C8T6
Sub-1GHz wireless MCU with Cortex-M4, long range, low power, and proprietary protocol support.
Product Overview
Description
The HS32S101C8T6 is a Sub-1GHz wireless MCU featuring ARM Cortex-M4 core and high-performance Sub-1GHz RF transceiver.
Operates at 433/868/915MHz with -120dBm sensitivity and +20dBm TX power for long-range applications.
Supports proprietary protocols and LoRa modulation for flexible IoT connectivity.
Product Series
HS
Primary Application
Smart metering (electric, gas, water)
Key Features
- Sub-1GHz operation at 433/868/915MHz (region configurable)
- High sensitivity: -120dBm for long-range reception
- High TX power: +20dBm for extended range
- Proprietary protocol stack with mesh networking support
- LoRa modulation support for ultra-long range
- Ultra-low power: 10mA RX, 25mA TX, <1μA sleep
- Data rates: 0.3kbps to 500kbps configurable
- Hardware AES-128/256 encryption
Specifications
| Core | ARM Cortex-M4 |
|---|---|
| Protocol | Sub-1G / Proprietary |
| Frequency | 433/868/915 MHz |
| TX Power | +20 dBm |
| Sensitivity | -120 dBm |
| Package | QFN48 |
Applications
Smart metering (electric, gas, water)
Electronic system design
Industrial wireless sensors
Sensor signal conditioning
Agricultural monitoring systems
Electronic system design
Smart city infrastructure
Electronic system design
Long-range asset tracking
Electronic system design
FAE Expert Insights
"The HS32S101C8T6 is designed for industrial IoT applications requiring long-range wireless connectivity. The Sub-1GHz frequency provides significantly better penetration through buildings and obstacles compared to 2.4GHz. I've deployed these in smart metering applications achieving over 1km range in urban environments. The -120dBm sensitivity is excellent for receiving weak signals from distant sensors. The +20dBm TX power ensures reliable communication back to those sensors. The proprietary protocol stack is well-designed with built-in mesh networking capabilities - sensors can route through each other to extend range further. LoRa modulation support is a bonus for applications needing maximum range at low data rates. The power consumption is competitive with dedicated Sub-1GHz transceivers. For industrial applications not requiring smartphone connectivity, this MCU offers better range and penetration than BLE at comparable cost."
Sub-1GHz with excellent sensitivity and TX power for long-range industrial IoT
— Frank Liu, BeiLuo
Frequently Asked Questions
What frequency should I use for my region?
Sub-1GHz frequency selection depends on regional regulations: 1) 433MHz - Europe: License-free, 10mW ERP limit; Asia: Widely used, varying limits; Americas: Limited availability; Best for: Global products, Europe focus; 2) 868MHz - Europe: License-free, 25mW ERP (868.0-868.6MHz); Higher power allowed in some sub-bands; Best for: European applications; 3) 915MHz - Americas: License-free ISM band; FCC Part 15 regulations; Higher power allowed than 868MHz; Best for: North American applications; 4) 470-510MHz - China: License-free for certain applications; Growing smart metering band; Regional considerations: Check local regulations for power limits; Duty cycle restrictions may apply; Some bands require listen-before-talk; Licensing may be required for high power. The HS32S101C8T6 supports all common frequencies with software configuration. For global products, 433MHz offers widest availability but shortest range. 868/915MHz provide better range but are region-specific.
Use 868MHz for Europe; 915MHz for Americas; 433MHz for global; check local regulations for power limits.
How does LoRa modulation work on HS32S101C8T6?
LoRa (Long Range) modulation provides exceptional range at low data rates: 1) LoRa principle - Chirp Spread Spectrum (CSS) modulation; Spreads signal across bandwidth; Resistant to interference and multipath; Processing gain improves sensitivity; 2) Spreading Factor (SF) - SF7 to SF12 configurable; Higher SF = longer range, lower rate; SF7: Fastest, shortest range; SF12: Slowest, longest range; 3) Trade-offs - SF7: 5.5kbps, ~2x range improvement; SF12: 300bps, ~10x range improvement; Higher SF = longer air time = higher power; 4) Applications - SF7-9: Moderate range, higher data rate; SF10-12: Maximum range, sensor data only. Range examples (urban): FSK 2.4kbps: ~500m; LoRa SF7: ~1km; LoRa SF12: ~3km. Power consumption: LoRa more efficient than FSK at low data rates; Longer air time but lower peak power; Better overall energy per bit. The HS32S101C8T6 supports both LoRa and FSK modulation for flexibility. Use LoRa for maximum range; FSK for higher data rates.
Use lower SF (7-9) for higher data rate; higher SF (10-12) for maximum range; balance with power consumption.
What is the maximum range of HS32S101C8T6?
Maximum range depends on environment, antenna, and configuration: 1) Urban environment - 433MHz: 500m - 1km (line of sight); 868MHz: 300m - 800m; 915MHz: 400m - 900m; 2) Rural/open field - 433MHz: 2km - 5km; 868MHz: 1km - 3km; 915MHz: 1.5km - 4km; 3) Factors affecting range - Frequency: Lower = longer range; TX power: +20dBm provides good range; Sensitivity: -120dBm excellent for weak signals; Antenna: External antennas significantly better; Height: Elevated antennas extend range; Obstacles: Buildings, trees reduce range; 4) Range extension - Use LoRa SF12 for maximum range; Directional antennas (Yagi); Elevated installation; Mesh networking for multi-hop. Comparison with BLE: Sub-1G typically 3-5x longer range; Better penetration through walls; More reliable in industrial environments. Real-world testing recommended: Range varies significantly with environment; Conduct site survey before deployment; Consider mesh for guaranteed coverage.
Expect 300m-1km urban, 1-5km rural; use LoRa SF12 and external antennas for maximum range.
How do I implement mesh networking with HS32S101C8T6?
Mesh networking extends coverage by routing through intermediate nodes: 1) Mesh principles - Nodes relay packets toward destination; Self-healing: routes adapt to node failures; Multi-hop: packets traverse multiple nodes; 2) Implementation - Proprietary mesh stack included; Configure node roles: Coordinator, Router, End Device; Automatic route discovery; Table-based or on-demand routing; 3) Network topology - Star: All nodes connect to central coordinator; Tree: Hierarchical routing through parent nodes; Mesh: Peer-to-peer routing between neighbors; 4) Configuration parameters - Maximum hops: Limit to control latency; Route discovery timeout; Retransmission attempts; Network ID for isolation. Trade-offs: Higher latency per hop (10-50ms); Increased power for router nodes; More complex debugging; Higher memory usage. Best practices: Limit to 3-5 hops for reasonable latency; Position router nodes strategically; Use mains-powered routers; Implement network diagnostics. The HS32S101C8T6 mesh stack supports up to 1000 nodes with automatic routing. Example: Smart metering - Meters as end devices; Concentrators as routers; Gateway as coordinator.
Use mesh for large coverage areas; limit hops to 3-5; position router nodes strategically; use mains power for routers.
What power supply options work with HS32S101C8T6?
The HS32S101C8T6 supports various power supply configurations: 1) Battery powered - Coin cell (CR2032): Suitable for low duty cycle; AA/AAA: Longer life, higher current; Li-SOCl2: 10+ year life for meters; Voltage range: 1.8V - 3.6V; 2) Mains powered - AC-DC converter: 5V or 3.3V output; Linear regulator: Simple, less efficient; Switching regulator: Efficient, more complex; 3) Energy harvesting - Solar: Outdoor applications; Piezo: Vibration harvesting; RF: Wireless power transfer; Thermal: Temperature differential; 4) Power considerations - TX at +20dBm: 25mA peak current; Sleep: <1μA; Average depends on duty cycle; Bulk capacitance for TX bursts. Design recommendations: Size power supply for peak TX current; Use low-dropout regulator for battery; Add sufficient bulk capacitance; Consider supercapacitors for high pulse currents. Example: Smart meter - Li-SOCl2 battery (3.6V, 19Ah); 10-year target life; Daily transmission; Total consumption: ~50μA average.
Size for peak TX current; use Li-SOCl2 for long life; add bulk capacitance; consider energy harvesting for maintenance-free.
How do I ensure regulatory compliance for Sub-1GHz?
Regulatory compliance is essential for legal operation: 1) FCC (USA) - Part 15.247: Frequency hopping spread spectrum; Part 15.249: Fixed frequency, lower power; Certification required for products; 2) ETSI (Europe) - EN 300 220: Short Range Devices (SRD); Duty cycle limits (e.g., 1%, 10%); Listen Before Talk (LBT) may be required; 3) ARIB (Japan) - TELEC certification required; Specific frequency bands allocated; Power limits vary by band; 4) China - SRRC certification required; 470-510MHz for metering; Specific technical requirements. Compliance features in HS32S101C8T6: Configurable TX power; Frequency agility; Duty cycle enforcement; LBT support. Certification process: Pre-testing at certified lab; Documentation preparation; Submission to regulatory body; ID labeling requirements. Pre-certified modules: Available to simplify certification; Limited modifications allowed; Faster time to market. Recommendations: Use pre-certified modules when possible; Work with experienced certification lab; Allow 2-3 months for certification; Budget for certification costs. The HS32S101C8T6 is designed to meet major regulatory requirements.
Use pre-certified modules; work with certified test lab; allow time and budget for certification; check local requirements.