LSM100A - Sub-GHz LoRa & Sigfox RF Module | Seong Ji
N.º da peça: LSM100A ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.25 | $112,50 |
| 100 | $9.8 | $980,00 |
| 500 | $8.4 | $4.200,00 |
| 1.000 | $7.1 | $7.100,00 |
LSM100A Visão geral
A Sub-GHz RF module is a pre-certified, PCB-integrated radio block that combines a transceiver IC, matching network, crystal oscillator, and antenna interface into a single qualified assembly. The LSM100A belongs to the LPWAN (Low-Power Wide-Area Network) module family, sitting below complete SoC transceivers in the wireless connectivity taxonomy and above bare RFICs. It is offered in both AT-command firmware and API firmware variants, where the AT version exposes a serial command interface and the API version exposes the STM32WL firmware APIs for custom application code.
Key features include Sigfox RC1 protocol support plus LoRaWAN connectivity simultaneously, ultra-low sleep current for battery-powered deployments, CE / LoRaWAN / Sigfox pre-certification, and an evaluation board (EVBLSM100A) for fast prototyping. The module uses spread-spectrum modulation to deliver ultra-long-range communication with high interference immunity while keeping average current consumption minimal, making it well aligned with metering, asset tracking, and remote sensor applications.
The integrated STM32WL SoC provides an ARM Cortex-M4 application core alongside the Sub-GHz radio peripheral, eliminating the need for an external host MCU in many designs. AT-command firmware converts the module into a transparent UART-controlled modem, while the API variant lets integrators load their own firmware into the on-module MCU. This dual-mode capability makes the LSM100A suitable for both quick time-to-market deployments and deeply integrated products.
Typical applications include Sigfox RC1 field devices, LoRaWAN end nodes for smart agriculture and utilities, wireless alarm and security sensors, industrial telemetry modems, smart city infrastructure, and battery-powered IoT sensor clusters. The pre-certified RF section removes the most time-consuming compliance step for low-volume product teams. When designing with the LSM100A, ensure the host PCB provides a 50 ohm RF feed to the module antenna pad and adequate clearance under the antenna keep-out area to preserve the radiated performance verified during certification.
Alternativas drop-in para LSM100A — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
LSM100A-AT
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
LSM110
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM32WLE5CCU6
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
LSM100A Especificações (publicadas pelo fabricante)
| Product Type | Sub-GHz RF transceiver module |
| Modulation | LoRa & Sigfox (spread spectrum) |
| Frequency Band | 863 MHz to 928 MHz |
| Supported Protocols | Sigfox RC1, LoRaWAN |
| Encapsulamento | LCC-34 (15 x 14 mm) |
| Module Dimensions | 14.0 mm (W) x 15.0 mm (L) x 2.8 mm (H) |
| Estilo de montagem | Surface mount (castellated half-through-hole) |
| Internal SoC | STM32WL series (ARM Cortex-M4 + Sub-GHz radio) |
| Firmware Variants | AT command version, API firmware version |
| Bidirectional | Yes (transmit and receive) |
| Certifications | CE, LoRaWAN Verified, Sigfox Verified |
| Communication Range | Ultra-long range (spread spectrum) |
| Interference Immunity | High (spread spectrum modulation) |
| Current Consumption | Low (sleep current optimized for battery) |
| Status RoHS | Compliant |
| Evaluation Board | EVBLSM100A (USB connected) |
Configuração de pinos do LSM100A
| Pino 1 | GND — Ground reference |
| Pino 2 | ANT — 50 ohm RF antenna pad |
| Pino 3 | GND — Ground reference |
| Pino 4 | VDD — Module power supply input |
| Pino 5 | GND — Ground reference |
| Pino 6 | TXD — UART transmit (host RX) |
| Pino 7 | RXD — UART receive (host TX) |
| Pino 8 | RESET — Module reset input |
| Pino 9 | GPIO1 — General-purpose I/O |
| Pino 10 | GPIO2 — General-purpose I/O |
Características de potência e térmicas
| Consumo de Potência | Low (sleep current optimized for battery) |
Parâmetros de entrada de potência e térmicos para LSM100A, conforme publicados pelo fabricante.
Aplicações típicas
LSM100A é adequado para 6 aplicaçãos: Sigfox RC1 Field Devices, LoRaWAN End Nodes for Smart Agriculture, Wireless Alarm and Security Sensors, Industrial Telemetry Modems, Smart City Infrastructure, Battery-Powered IoT Sensor Clusters.
Sigfox RC1 Field Devices
The LSM100A's simultaneous Sigfox RC1 plus LoRaWAN support makes it ideal for field-deployed Sigfox devices that may need to migrate to LoRaWAN later. With its pre-certified CE, LoRaWAN, and Sigfox certifications, integrators avoid re-running RF compliance on the radio section. The module's STM32WL core and ultra-low sleep current extend battery life across the years-long service intervals expected of metering and remote-sensor deployments. Output power up to +14 dBm typical supports kilometers of range in rural Sigfox coverage zones.
Recomendado
LoRaWAN End Nodes for Smart Agriculture
In smart agriculture, the LSM100A's LoRaWAN support enables soil moisture, weather, and livestock monitoring nodes to communicate over multi-kilometer links from battery-powered field locations. The 863-928 MHz band coverage allows the same module SKU to ship in EU868, US915, and AS923 regional deployments, simplifying inventory. Spread-spectrum modulation delivers high interference immunity against agricultural machinery and motor noise. The compact 14x15 mm LCC-228 package fits inside small IP67 sensor enclosures.
Recomendado
Wireless Alarm and Security Sensors
Security sensor manufacturers leverage the LSM100A's bidirectional radio and dual-mode Sigfox/LoRa support to ship a single hardware platform across regions with different LPWAN operators. The bidirectional capability allows uplink alarm events plus downlink configuration messages, while the AT-command firmware variant integrates into existing alarm panel UART interfaces. Pre-certification removes 6-12 months of RF compliance work. The low sleep current preserves battery life across multi-year sensor service intervals.
Recomendado
Industrial Telemetry Modems
Industrial telemetry gateways use the LSM100A to backhaul PLC, SCADA, and sensor data over LPWAN coverage where cellular or Wi-Fi is unavailable. The STM32WL SoC inside the module can host customer telemetry parsing code in the API firmware variant, eliminating the external host MCU. The industrial temperature range and CE certification suit factory and substation deployments. Spread-spectrum modulation ensures reliable communication in electrically noisy industrial environments.
Recomendado
Smart City Infrastructure
Smart city deployments - street lighting control, waste bin monitoring, parking sensors, and environmental monitoring - rely on the LSM100A's pre-certified RF section and small footprint. The 863-928 MHz band coverage allows single-SKU global deployment across Sigfox and LoRaWAN operator networks. Bidirectional communication supports over-the-air firmware updates and command acknowledgements. The module's LCC-228 castellated pads simplify SMT assembly in high-volume sensor production.
Recomendado
Battery-Powered IoT Sensor Clusters
For battery-powered IoT clusters such as wildlife trackers, environmental monitors, and asset trackers, the LSM100A's ultra-low sleep current and integrated STM32WL SoC deliver years of service from a single coin cell or AA battery. The API firmware variant allows the application code to run directly on the module's Cortex-M4 core, removing the external MCU quiescent current drain. Bidirectional radio enables remote wake-up and configuration messages. Pre-certified RF reduces time-to-market.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LSM100A — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LSM100A-AT | LSM110 | STM32WLE5CCU6 |
|---|---|---|---|---|
| Brand | Seong Ji | Seong Ji | Seong Ji | STMicroelectronics |
| Package | LCC-34 (15x14 mm) module | LCC-34 (15x14 mm) module - same | LCC-34 (15x14 mm) module - same | UFQFPN-48 (bare SoC, not module) |
| Frequency Band | 863-928 MHz | 863-928 MHz - same | 863-928 MHz - same | 150-960 MHz (broader SoC range) |
| Supported Protocols | Sigfox RC1 + LoRaWAN | Sigfox RC1 + LoRaWAN (AT firmware) | Sigfox + LoRaWAN | Bare SoC - customer implements protocol stack |
| Integrated MCU | Yes (STM32WL Cortex-M4 inside module) | Yes (STM32WL Cortex-M4) | Yes (STM32WL Cortex-M4) | Yes (this is the bare SoC itself) |
| Certifications | CE, LoRaWAN Verified, Sigfox Verified | CE, LoRaWAN Verified, Sigfox Verified - same | CE, LoRaWAN Verified, Sigfox Verified - same | None (bare SoC requires host certification) |
| Firmware Variant | AT or API (customer chooses) | AT command only | AT and API | Customer firmware (no preloaded stack) |
| Mounting Style | Castellated LCC-34 SMT | Castellated LCC-34 SMT - same | Castellated LCC-34 SMT - same | UFQFPN-48 SMT (no castellations) |
Principais diferenciais
- Sigfox RC1 plus LoRaWAN in a single certified module (vs Microchip RN2483 (LoRaWAN only))
- API firmware variant runs customer code on internal STM32WL Cortex-M4 (vs Wisol WSSFM10R2 Sigfox module)
- 14x15 mm LCC-34 footprint with castellated half-through-hole pads (vs Murata Type ABZ module)
Notas de projeto
Place the LSM100A at the edge of the board and route a 50 ohm microstrip or coplanar waveguide feed to the castellated ANT pad. Keep a copper keep-out area under the antenna pad with no copper on any layer, no ground plane, and no traces passing beneath. The PCB antenna trace length and matching network should follow the reference design in the Seong Ji EVBLSM100A evaluation board layout to preserve the radiated performance verified during CE/LoRaWAN/Sigfox certification.
Provide a clean 3.3 V regulated supply to the LSM100A VDD pad with a 10 uF bulk capacitor plus a 100 nF decoupling capacitor placed within 5 mm of the module. The module draws short bursts of the radio current during transmit that can sag a weak regulator - use an LDO with at least 200 mA peak rating. Tie RESET to the host MCU GPIO with a 10 kohm pull-up to VDD so the host can recover from module lock-ups after firmware updates.
Do not assume the LSM100A is a drop-in replacement for LoRa-only modules like the RN2483 - the Sigfox RC1 stack is unique and the AT-command interface differs. UART baud rate and framing must match the host firmware or boot messages will be lost. Some early Seong Ji firmware revisions require a specific AT-command sequence before LoRa joins succeed - check the official user manual rather than guessing. Do not exceed the operating temperature range or the module may drift out of regulatory certification.
Informações de conformidade
CE, LoRaWAN Verified, and Sigfox Verified per official datasheet. RoHS compliant per JLCPCB listing. AEC-Q100 not applicable - this is an RF module, not an automotive-grade component.
