14235R-500 - FT 5000 LONWORKS Smart Transceiver MCU | Renesas
Référence : 14235R-500 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1 385,00 |
| 500 | $11.4 | $5 700,00 |
| 1 000 | $9.75 | $9 750,00 |
14235R-500 Présentation
A Neuron LONWORKS Smart Transceiver is a purpose-built application-specific microcontroller (ASIC MCU) optimized for distributed control networking. In the product hierarchy, it sits below Application Specific Microcontroller > Microcontroller (MCU/MPU/SOC) > Integrated Circuit > Semiconductor. The FT 5000 family was developed by Echelon (now part of Renesas/Dialog) to bring high-performance 32-bit network processing to LONWORKS nodes while retaining the deterministic MAC layer behavior that made earlier FT 3120 and FT 3150 parts popular in building automation and industrial control.
Key features include 12 communication channels selectable via hardware configuration, support for external program memory up to 64 KB, an integrated LDO for internal core supply generation, an external NRST pin reset, and a wide 3.0 V to 3.6 V supply range. Operating temperature spans -40 C to +85 C (industrial grade), making the part suitable for outdoor control cabinets and factory-floor nodes. The QFN-48 (7x7) package exposes a thermal pad for ground bonding and PCB heatsinking, important in sealed-node enclosures.
The FT 5000 core implements a hardware 32-bit multiply/divide engine with deterministic interrupt latency, which is critical for token-passing LONTALK protocol scheduling. External memory isochronous DMA offloads network buffer management from the application CPU, freeing MIPS for application logic. Compared with legacy FT 3120 parts at 40 MHz, the FT 5000 offers substantially higher throughput for IP-852 channels and LonTalk/IP tunneling scenarios.
Typical applications include building automation controllers (lighting, HVAC, access control), industrial process control nodes, smart-grid AMI gateways, and elevator/transportation controllers. The 14235R-500 is widely used as the network processor inside Echelon I/O modules, LonWorks routers, and OEM control panels.
When designing with the 14235R-500, reserve a parallel external flash/EPROM footprint and observe the recommended power-on reset sequencing of the integrated LDO. Use a 4-layer PCB with a contiguous ground plane under the exposed pad to dissipate junction heat at the upper operating-temperature boundary.
Alternatives de remplacement direct pour 14235R-500 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
14235R-2000
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
14235R-ES
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
14255R-100
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
FT 5000 EVK
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
FT-X1
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
14235R-500 Valeurs maximales et caractéristiques électriques
| Product Type | Application Specific Microcontroller (MCU/MPU/SOC) |
| Core | Neuron FT 5000 (LONWORKS Smart Transceiver) |
| Program Memory | External |
| Tension d'alimentation | 3.0 V to 3.6 V |
| Number of I/O | 12 |
| Reset | External pin reset (NRST) |
| Integrated LDO | Yes |
| Température de fonctionnement | -40 C to +85 C |
| Boîtier | QFN-48 (7x7 mm) with Exposed Pad |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Manufacturer | Echelon (now Renesas Electronics / Dialog) |
| Communication Channels | Up to 12 hardware-configurable channels |
| Protocol Support | ANSI/CEA-709.1, ANSI/CEA-852 (LONWORKS/IP) |
| Lead Free | Yes |
Guide de configuration des broches du 14235R-500 qfn-48 (7x7 mm) with exposed pad
Configuration des broches du 14235R-500 (boîtier qfn-48 (7x7 mm) with exposed pad). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour 14235R-500.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
14235R-500 convient pour 6 applications: Building Automation Controllers, Industrial Process Control Nodes, Smart Grid AMI Gateways, Elevator and Transportation Controllers, LONWORKS Routers and Bridges, HVAC Variable Air Volume (VAV) Controllers.
Building Automation Controllers
The 14235R-500 is the network processor of choice for LonWorks building automation controllers managing HVAC, lighting, and access-control subsystems. Its FT 5000 core natively executes the ANSI/CEA-709.1 LonTalk protocol with deterministic MAC-layer scheduling, which is critical for time-critical lighting scenes and access-control events. The 3.0-3.6 V supply, integrated LDO, and industrial -40 C to +85 C temperature range allow direct deployment in rooftop and mechanical-room enclosures. The 12 hardware-selectable channels let a single 14235R-500 manage multiple sub-networks (twisted-pair, powerline, RF, and IP/LON) without an external protocol converter. Compared with a generic 32-bit MCU, the 14235R-500 removes the need for software protocol stacks, freeing engineering effort for application logic.
Recommandé
Industrial Process Control Nodes
In factory-floor automation, the 14235R-500 acts as the deterministic network node for distributed control of valves, motors, and sensor clusters. The FT 5000 hardware MAC layer delivers bounded-latency message delivery required for closed-loop process control, and the integrated LDO simplifies power-tree design inside sealed IP67 enclosures. The QFN-48 (7x7 mm) package with exposed pad provides robust thermal performance for cabinet-free installations, while the external program memory allows on-site firmware updates for long-life industrial assets. Engineers should pair the 14235R-500 with an FT-X3 transformer for noise-immune twisted-pair connectivity in electrically harsh industrial environments.
Recommandé
Smart Grid AMI Gateways
The 14235R-500 supports ANSI/CEA-852 IP-852 channels, making it a strong fit for smart-meter AMI gateways that tunnel LONWORKS traffic over IP backhaul. A single FT 5000 node can aggregate hundreds of metering endpoints, with the 12 configurable channels splitting sub-net traffic by service class. The integrated LDO and NRST reset simplify the gateway power design, while the industrial temperature range handles outdoor meter-pit installations. Engineers value the FT 5000 core for its deterministic bandwidth allocation, which is essential when meters must report at fixed wall-clock intervals without IP-network jitter.
Recommandé
Elevator and Transportation Controllers
Transportation and elevator controllers rely on the 14235R-500 for group control network nodes that must operate over decades without failure. The FT 5000 architecture is field-proven in elevator dispatch networks, where deterministic LonTalk scheduling synchronizes car-position, door-control, and safety messages across a building. The -40 C to +85 C temperature range covers unconditioned machine rooms and rooftop elevator penthouses. The external program memory allows OEM firmware evolution across product generations without redesigning the network hardware. Compared with proprietary fieldbuses, the 14235R-500 standardizes on LonWorks, giving elevator OEMs an open-architecture controller platform.
Recommandé
LONWORKS Routers and Bridges
The 14235R-500 is the standard router engine for LonWorks routers that bridge twisted-pair, powerline, RF, and IP/LON channels. A single FT 5000 device can run the LonTalk router firmware, with the 12 configurable channels enabling any-to-any media bridging. The integrated LDO and NRST reset allow compact PCB designs typical of DIN-rail-mounted routers, and the QFN-48 (7x7 mm) footprint fits inside sealed plastic enclosures. Engineers should reference the Echelon LonWorks router reference design to leverage the FT 5000 native routing performance without external PHY silicon.
Recommandé
HVAC Variable Air Volume (VAV) Controllers
Variable Air Volume box controllers in commercial HVAC networks are a classic application for the 14235R-500. The FT 5000 core's deterministic LonTalk MAC layer ensures damper-actuator commands arrive within the bounded latency required for closed-loop airflow control. The 3.3 V supply, integrated LDO, and small QFN-48 footprint allow the controller PCB to fit inside compact VAV box enclosures. The -40 C to +85 C operating range covers unconditioned ceiling plenum spaces, and the external program memory lets facility managers push calibration firmware updates over the network. Compared with discrete MCU + protocol-stack solutions, the 14235R-500 provides a certified, interoperable LONWORKS platform.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour 14235R-500 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 14235R-2000 | 14235R-ES | 14255R-100 | FT 5000 EVK | FT-X1 (14260R-100) |
|---|---|---|---|---|---|---|
| Package | QFN-48 (7x7 mm) with Exposed Pad | QFN-48 (7x7 mm) with Exposed Pad - same | QFN-48 (7x7 mm) with Exposed Pad - same | QFN-48 (7x7 mm) with Exposed Pad - same | QFN-48 (7x7 mm) with Exposed Pad - same | QFN-48 (7x7 mm) with Exposed Pad - same |
| Brand | Renesas Electronics (formerly Echelon/Dialog) | Renesas Electronics | Renesas Electronics (Echelon brand) | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Core | FT 5000 Neuron LONWORKS Smart Transceiver | FT 5000 Neuron - identical | FT 5000 Neuron - identical | FT-X3 (companion transformer) | FT 5000 Neuron - same die | FT 5000 family free-topology transceiver |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Program Memory | External | External | External | External | External | External |
| Communication Channels | Up to 12 hardware-configurable | Up to 12 | Up to 12 | FT-X3 twisted-pair interface | Up to 12 | Free-topology twisted-pair |
| Protocol Support | ANSI/CEA-709.1, ANSI/CEA-852 | ANSI/CEA-709.1, ANSI/CEA-852 | ANSI/CEA-709.1, ANSI/CEA-852 | ANSI/CEA-709.1 PHY | ANSI/CEA-709.1, ANSI/CEA-852 | ANSI/CEA-709.1 free-topology |
Principaux différenciateurs
- True drop-in compatibility with 14235R-2000 and 14235R-ES (vs 14235R-2000)
- Companion FT-X3 transformer for twisted-pair media (vs 14255R-100)
- Free-topology twisted-pair variant available (vs FT-X1 (14260R-100))
Notes de conception
Place a 10 uF X7R ceramic bypass capacitor as close as possible to the exposed pad ground pins and the VCC33 supply pin. The FT 5000 internal LDO draws transient current during LonTalk MAC scheduling; insufficient bulk capacitance can cause VCC33 sag that triggers spurious NRST events. Add a 100 nF decoupling cap adjacent to every VCC pin to suppress switching noise.
Solder the QFN-48 exposed pad to a continuous ground copper pour of at least 25 mm squared to keep the junction temperature within safe limits at the +85 C ambient boundary. Without proper thermal bonding, the package will exceed rated temperature in sealed-node enclosures. Estimated: at 200 mA active load and 1 W dissipation, junction-to-ambient thermal resistance of 35 C/W yields a 35 C rise, so a ground pour is mandatory.
Use a 4-layer PCB with a dedicated ground plane and a 3.3 V power plane. Route the external memory bus (data/address/control) on the top layer with matched trace lengths, and place the parallel memory device within 50 mm of the FT 5000 to avoid signal-integrity issues. Keep the NRST trace away from the CLK1/CLK2 crystal traces to prevent false resets.
Do not omit the external program memory footprint: the 14235R-500 will not boot without it. Verify the FT 5000 datasheet memory timing parameters and select a flash device with 70 ns access time or faster. Also ensure the service pin is pulled high via 10 kohm for node commissioning, otherwise LonWorks installation tools cannot identify the node.
Informations de conformité
RoHS compliant per JLCPCB listing. AEC-Q100 not applicable (LONWORKS transceiver is not an automotive-grade part). REACH and conflict-minerals status not explicitly stated in verified data; confirm with Renesas for full compliance documentation.
