ARF32 is a Bluetooth module launched by Renesas Electronics, which supports data and audio transmission, supports Bluetooth v2 end product certification, and uses uart-type ttl serial interface. The air rate is 723kbps.
The ARF32 module provides full‑duplex Bluetooth V2 communication for data or audio over the 2.45 GHz ISM band. It includes a miniature antenna and a TTL‑UART interface, supporting data profiles (SPP) and audio profiles (HFP, HSP, HSAG) in the Data, Data & digital Audio, and Data & analog Audio versions.
A complete Demokit with demoboard, RS‑232 cable and power supply is supplied for easy evaluation and integration, and the module complies with EN 300‑328 / EN 301‑489 (Europe) and FCC part 15 (USA/CAN).
| Air rate | 723 kbps |
|---|---|
| Frequency | 2.402 to 2.480 GHz (FHSS) |
| Radiated RF power | 1 mW |
| RF sensitivity | -85 dBm for BER 10⁻³ |
| Operating range | > 20 m |
| Operating voltage | 3.3 V typ (2.85 V‑3.6 V) |
| Current consumption | < 45 mA |
| Temperature range | -35 °C to +70 °C |
| Dimensions | 25 × 18 × 3.5 mm |
| UART baud rate | 9.6 kbps‑921.6 kbps |
| Serial TTL port | TXD, RXD, RTS, CTS |
| Compliance | EN 300‑328 / EN 301‑489 (EU) – FCC part 15 (US/CAN) |
| Audio profiles | HFP, HSP, AG |
| Audio bandwidth | 200 Hz‑3400 Hz |
The module can operate over distances greater than 20 meters.
It uses the 2.402 GHz to 2.480 GHz FHSS band in the 2.45 GHz ISM spectrum.
Available versions are Data, Data & digital Audio, and Data & analog Audio.
The audio versions support HFP (hand‑free), HSP (headset) and AG (audio gateway) profiles.