RN42-I/RM630 Bluetooth Module Datasheet and Technical Specifications

The RN42-I/RM630 is a robust and versatile Bluetooth 2.1 + EDR (Enhanced Data Rate) module from Microchip Technology (formerly Roving Networks). Designed for seamless serial cable replacement and low-power applications, this module provides a reliable, certified solution for embedding wireless connectivity into a wide array of electronic products.

Core Features and Specifications

The module stands out with its comprehensive feature set designed for ease of integration and reliable performance.

Bluetooth Protocol: Supports Bluetooth v2.1 + EDR, ensuring compatibility with a vast installed base of smartphones, tablets, and computers. It features three power classes for different range requirements.

Interface: The primary interface is a UART (Serial) with support for common baud rates up to 921.6 kbps, making it a perfect drop-in replacement for wired serial connections. It also supports SPI and USB for more advanced communication needs.

Command and Data Modes: The module operates in two main modes: Data Mode for transparent wireless data transmission and Command Mode for configuration using simple ASCII-based commands (e.g., AT commands).

Profiles: It supports essential Bluetooth profiles, including SPP (Serial Port Profile) for emulating a serial connection, and DUN, HID, and iAP2 for connecting to various hosts and peripherals.

Security: Features 128-bit AES encryption for secure data transfers, ensuring that wireless communication remains protected from unauthorized access.

Power Management: Excellent low-power capabilities include multiple sleep modes (e.g., deep sleep, hibernate) which are critical for battery-operated devices, significantly extending operational life.

RF Performance: With a standard range of up to 20 meters (Class 2) and a transmit power of +4 dBm, it is suitable for most short to medium-range applications. An integrated PCB trace antenna is standard, with a option for an external antenna connection on certain variants.

Firmware: User-upgradable firmware allows for feature enhancements and bug fixes in the field, providing long-term adaptability.

Applications

The RN42-I/RM630 is ideal for numerous applications, including:

Medical Devices (patient monitors, glucose meters)

Point-of-Sale (POS) Systems (wireless card readers, receipt printers)

Industrial Control and Data Acquisition (sensors, PLCs)

Consumer Electronics (gaming controllers, remote controls)

M2M (Machine-to-Machine) Communication

ICGOODFIND: The RN42-I/RM630 remains a highly relevant and practical choice for developers seeking a mature, reliable, and fully-certified Bluetooth Classic solution. Its strength lies in its simplicity, robust command set, and proven performance for creating wireless serial links, making it a cornerstone module for industrial and commercial wireless products.

Keywords: Bluetooth 2.1+EDR, Serial Port Profile (SPP), UART Interface, Low-Power Modes, AES Encryption