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Microchip Technology RN-240F
- Part No.:
- RN-240F
- Manufacturer:
- Microchip Technology
- Package:
- Datasheet:
-
RN-240F.pdf
- Description:
- ADAPTER BLUETOOTH FRFLY SRL FEML
- Quantity:
- Payment:
- Shipping:
Inventory:1,593
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Product details
Overview
RN-240F from Roving Networks is a Bluetooth 2.0 (EDR) serial adapter with DB9 female connector, Class 1 radio (100 m range), integrated antenna, and tri-mode operation (Slave/Instant Cable/Master) for RS232 port wireless bridging in industrial telemetry systems.
For engineers reviewing the RN-240F datasheet, RN-240F pinout, RN-240F application, or RN-240F equivalent, key selection criteria include DB9 female mechanical interface, 4–12 VDC power input via Pin 9, AT-command configurability, 1200–464 kbps baud rates, and Sniff mode current draw (1–10 mA standby).
Technical Context
The RN-240F implements Bluetooth Serial Port Profile (SPP) compliance per v2.0+EDR and maintains backward compatibility with v1.1/1.2. It supports three operational modes: Slave (client-initiated connection), Instant Cable (peer-to-peer FireFly pairing), and Master (device discovery and auto-connect).
Power management includes hardware-triggered auto-connect/disconnect on data activity and Sniff mode for low-power operation. Configuration is performed exclusively via ASCII AT commands over the serial interface or remotely over Bluetooth - no external programming hardware required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bluetooth Version | 2.0 + EDR; enables 3× higher data throughput vs. v1.2, critical for real-time serial streaming. |
| Radio Class | Class 1 (100 m range); eliminates need for external amplifiers or repeaters in open-field telemetry. |
| Interface Connector | DB9 female; mates directly with standard RS232 DTE equipment without gender adapters or cables. |
| Power Input | 4–12 VDC via DB9 Pin 9; removes dependency on separate power supply in embedded serial gateway designs. |
| Baud Rate Range | 1200–464 kbps including non-standard values; supports legacy industrial protocols and high-speed firmware updates. |
| Standby Current | 1–10 mA in Sniff mode; extends battery life in portable diagnostic tools and remote sensor nodes. |
Pinout & Package
Package: DB9 female housing with onboard DCE/DTE jumper configuration; dimensions 3.0″ × 1.3″ × 0.9″ (76.2 mm × 33.0 mm × 22.9 mm); PCB-mountable with screw terminals for power and ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | DCD (Data Carrier Detect) | Input indicating remote modem carrier presence; used in legacy dial-up handshaking. |
| Pin 2 | RX (Receive Data) | Serial input to RN-240F; connects to TX of host RS232 device (DTE/DCE dependent). |
| Pin 3 | TX (Transmit Data) | Serial output from RN-240F; connects to RX of host RS232 device (DTE/DCE dependent). |
| Pin 4 | DTR (Data Terminal Ready) | Output asserting host readiness; controls flow in modem-emulation scenarios. |
| Pin 5 | GND | Signal reference and return path for serial signals and DC power. |
| Pin 6 | DSR (Data Set Ready) | Input confirming RN-240F readiness; asserted after Bluetooth link establishment. |
| Pin 7 | RTS (Request To Send) | Hardware flow control output; toggles to pause host transmission during buffer congestion. |
| Pin 8 | CTS (Clear To Send) | Hardware flow control input; enables host transmission when RN-240F buffer space is available. |
| Pin 9 | VCC (Power In) | 4–12 VDC input; powers RN-240F directly from host RS232 port if supported. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-mode Bluetooth operation | Enables flexible deployment as Slave (PDA/laptop peripheral), Instant Cable (wireless null-modem), or Master (auto-discovery of SPP devices). |
| Onboard DCE/DTE jumpers | Eliminates need for crossover cables or gender changers by allowing polarity reconfiguration without soldering. |
| AT command interface | Permits full configuration (baud rate, name, PIN, mode) via serial terminal or Bluetooth - no proprietary software required. |
| Trigger-based auto-connect | Initiates Bluetooth link only upon detection of incoming serial data, reducing idle power consumption in intermittent telemetry. |
| Integrated Class 1 antenna | Delivers certified 100 m range without external RF components or antenna tuning circuits. |
Applications
| Industrial Serial Telemetry | Portable Diagnostic Tooling |
|---|---|
Use Scenario: Wireless transmission of Modbus RTU data from remote PLCs to central SCADA HMI over RS232. IC Role / Device Role / Timing Role: RN-240F acts as transparent Bluetooth bridge, preserving timing-critical inter-byte gaps and frame integrity. Use Value: Enables retrofit of legacy serial infrastructure with secure, standards-compliant wireless links without modifying existing firmware or protocol stacks. | Use Scenario: Field technician connects handheld multimeter or oscilloscope to laptop via RN-240F for live waveform capture. IC Role / Device Role / Timing Role: RN-240F serves as bidirectional serial tunnel with hardware flow control (RTS/CTS) to prevent data loss at 115.2 kbps. Use Value: Eliminates cable clutter and physical tethering while maintaining deterministic latency and error-free transfer of calibration-grade measurement data. |
| Medical Device Data Logging | Legacy POS Terminal Modernization |
Use Scenario: Wireless upload of patient vital sign logs from bedside monitor with RS232 output to nursing station PC. IC Role / Device Role / Timing Role: RN-240F operates in Slave mode, presenting as virtual COM port; handles burst transfers of ASCII-formatted log files. Use Value: Complies with hospital EMC requirements via Class 1 EDR modulation and avoids RF interference with adjacent MRI or infusion pumps. | Use Scenario: Upgrading aging retail POS terminals with RS232 receipt printers to support mobile payment apps via Bluetooth. IC Role / Device Role / Timing Role: RN-240F functions as Master device, initiating connection to Android/iOS Bluetooth SPP profiles for receipt forwarding. Use Value: Delivers drop-in integration with zero changes to printer firmware or host OS drivers - only AT command setup required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Bluetooth serial adapter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Bluegiga WT12 | Bluetooth 2.1 + EDR; requires external level-shifting circuitry for RS232 voltage levels; no integrated DB9 connector. | Targeted at custom PCB integration rather than plug-and-play DB9 field retrofit. | Select WT12 only when designing new hardware with UART-level interfaces and requiring Bluetooth stack customization. |
| Microchip BM70 | Bluetooth 4.2 BLE-only; lacks Classic Bluetooth SPP support; no RS232 transceiver or DB9 interface. | Suitable for ultra-low-power sensor beaconing, not for legacy serial protocol bridging. | BM70 is incompatible with RN-240F use cases requiring SPP, RS232 voltage levels, or DB9 mechanical fit. |
Compared with WT12 and BM70, the RN-240F uniquely delivers pre-certified SPP-compliant serial bridging with native DB9 female mechanical interface, onboard RS232 level translation, and zero-firmware field configuration - making it the only option for immediate RS232 port retrofit without hardware redesign.
Availability
RN-240F is available at Aetrix Electronics and suitable for industrial telemetry, portable diagnostics, medical data logging, and legacy POS terminal modernization requiring stable component supply and long-term obsolescence management.
Supply support for RN-240F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Roving Networks was a Silicon Valley developer specializing in embedded Bluetooth modules before acquisition by Microchip Technology in 2012.
The FireFly product line was engineered specifically for seamless RS232/RS422 port wireless replacement in industrial, medical, and point-of-sale environments with minimal integration effort.
FAQ
What is the maximum reliable communication distance for the RN-240F in open-air conditions?
The RN-240F features a certified Class 1 Bluetooth radio with an integrated antenna, delivering up to 100 meters line-of-sight range under FCC/ETSI regulatory limits. Real-world performance depends on enclosure materials, local RF noise, and antenna orientation - but the RN-240F consistently achieves ≥80 m in typical industrial settings with no external amplification required.
Does the RN-240F require external RS232 level translation circuitry?
No. The RN-240F includes a fully integrated RS232 transceiver compliant with ±12 V signal levels, eliminating the need for external MAX232 or similar ICs. Its DB9 female connector provides direct connection to standard RS232 DTE/DCE equipment, and onboard jumpers allow DCE/DTE polarity selection without hardware modification.
Can the RN-240F operate in Master mode without a host microcontroller?
Yes. The RN-240F supports autonomous Master mode operation: it can scan for, discover, and establish SPP connections to other Bluetooth devices using built-in firmware logic - triggered either manually via AT commands or automatically on incoming serial data. No external controller is needed to manage pairing or link maintenance.
What power supply specifications must be met for reliable RN-240F operation?
The RN-240F accepts 4–12 VDC input via DB9 Pin 9, with typical current draw of 30–50 mA during active Bluetooth transfer and 1–10 mA in Sniff mode. Voltage regulation must be stable within ±5%; ripple should remain below 100 mVpp to prevent UART framing errors or Bluetooth disconnects during sustained data bursts.
Is the RN-240F compatible with Bluetooth 5.0 or later host devices?
Yes. The RN-240F is Bluetooth 2.0 + EDR compliant and maintains full backward and forward interoperability with Bluetooth 5.x hosts operating in Classic Bluetooth (BR/EDR) mode. It appears as a standard SPP device to all modern smartphones, laptops, and tablets - no driver installation or special profiles required.
RN-240F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- RN
- Packaging:
- Bag
- Product Status:
- Obsolete
- Function:
- Transceiver, Bluetooth
- Modulation or Protocol:
- Bluetooth v2.0+EDR, Class 1
- Frequency:
- 2.4GHz
- Applications:
- General Purpose
- Interface:
- UART, RS-232
- Sensitivity:
- -80dBm
- Power - Output:
- 16dBm
- Data Rate (Max):
- 234kBaud
- Features:
- CSR BlueCore04 Chip/8Mb flash
RN-240F FAQ
1.How can I place an order for RN-240F through Aetrix?
Please submit a Request for Quotation (RFQ) for RN-240F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RN-240F reliable?
The price and inventory of RN-240F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RN-240F is usually 5 days.
3.What payment methods are accepted for RN-240F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RN-240F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RN-240F?
RN-240F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RN-240F order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RN-240F?
For technical support, including RN-240F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RN-240F requirements.
6.How does Aetrix verify that RN-240F is sourced from the original manufacturer or authorized distributors?
All RN-240F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RN-240F meets industry standards.
7.What is the process for return or replacement of RN-240F?
All RN-240F units undergo pre-shipment inspection (PSI). If there is an issue with RN-240F, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RN-240F part is unused and in its original packaging.
Return procedure for RN-240F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RN-240F Tags
-
BT851
Ezurio
-
451-00004
Ezurio
-
BT820
Ezurio
-
EMBC22-F141-H1111
EM Microelectronic
-
OTX-433-HH-KF5-MS
TE Connectivity Linx
-
ANTUSB-M
Garmin Canada Inc.
-
BLED112-V1
Silicon Labs
-
OTX-418-HH-KF5-HT
TE Connectivity Linx
-
455-00083
Ezurio
-
OTX-433-HH-LR8-MS
TE Connectivity Linx
-
OTX-418-HH-LR8-MS
TE Connectivity Linx
-
CMD-HHLR-433-MD
TE Connectivity Linx
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