Microchip Technology RN4678 BLUETOOTH® Dual Mode Modules

Microchip Technology RN4678 BLUETOOTH® Dual-Mode Modules are designed with an integral ceramic chip antenna and RF shield to embed BLUETOOTH functionality into any application. These modules transfer data through the BLUETOOTH link by sending/receiving data through Transparent UART in the BLE mode and SPP in the Bluetooth (BT) Classic mode. The RN4678 BLUETOOTH modules feature a 2.4GHz transceiver, onboard BLUETOOTH stack, RF power amplifier, and power management subsystem. These modules consist of castellated pads for easy and reliable host PCB mounting.

The RN4678 BLUETOOTH modules can independently maintain a low-power wireless connection and are compatible with standard pick-and-place equipment. These modules consist of an ASCII interface that provides an easy way to integrate the module with any MCU with a UART interface. The parameters of the modules can be configured directly through UART by the host MCU. Typical Microchip Technology RN4678 BLUETOOTH® Dual-Mode Modules applications include Internet of Things (IoT), health and fitness, home and security, industrial and data logger, LED lighting, and secure payment.

Features

BLUETOOTH Classic (BR/EDR) and Low Energy (LE)
Certified to FCC, IC, MIC, KCC, and NCC radio regulations
European R&TTE directive assessed radio module
Bluetooth SIG 4.2 qualified
Transparent UART mode for seamless serial data over BLUETOOTH Classic using Serial Port Profile (SPP), and BLUETOOTH Low Energy (BLE) using
Generic Attribute (GATT) profile
Easily programmable through ASCII commands and easily configurable with available PIC^® MCU driver library
Firmware can be upgraded in the field over UART (Flash version)

Integral chip antenna (RN4678) or external antenna (RN4678U)
Integrated crystal, internal voltage regulator, and matching circuitry
Available configurable I/O pins for control or status indication
Supports Apple^® iPod Accessory Protocol (iAP2) (only RN4678APL)
Supports BLUETOOTH 4.2 LE secure connections
BLUETOOTH 4.2 LE data packet length extension
Small and compact surface mount module
Castellated SMT Pads for easy and reliable PCB mounting
Ideal for portable battery-operated devices

Specifications

RF/analog:
- 2.402GHz to 2.480GHz frequency
- -90dBm (BR/EDR), -92dBm (LE) RX sensitivity
- 1.5dBm Class 2 output power
Data throughput:
- Data throughput at 1Mbps UART baud rate:
  - Up to 32Kbps BR/EDR
  - Up to 7Kbps LE
- Data throughput at 115200bps UART baud rate:
  - Up to 10Kbps BR/EDR
  - Up to 6Kbps LE

Operating conditions:
- 3.3V to 4.2V operating voltage range
- -20°C to +70°C operating temperature range
MAC/baseband/higher layer:
- Secure AES128 encryption
- BLUETOOTH 3.0
  - GAP, SPP, SDP, RFCOMM, and L2CAP
- BLUETOOTH 4.2
  - GAP, GATT, ATT, SMP, and L2CAP