BLE02 - Dual-Mode Bluetooth HCI Controller

BLE02 is a dual-mode Bluetooth Low Energy controller module based on the CC2564C HCI compatible chipset.
The module provides UART (HCI) and PCM/I²S digital audio interface and is designed as a compact MLAB building block for integration with external MCU/MPU systems.

The RF section, clocks and power conditioning are implemented on-board. The host processor should handle the Bluetooth stack via HCI transport.

Key Features

• Dual-mode Bluetooth controller (BR/EDR + LE, Bluetooth 5.1 compliant)
• HCI transport over UART (up to 4 Mbit/s)
• PCM / I²S digital audio interface
• Class 1 transmitter capability (up to +12 dBm)
• Integrated LDO regulator from 3.3V power source
• 26 MHz main crystal oscillator
• 32.768 kHz low-power clock oscillator
• 1.8 V I/O domain (level shifted to 3.3 V on module connectors)
• Single-ended 50 Ω RF interface on MCX connector

The module uses the chip in HCI mode. All higher Bluetooth layers must run on the host MCU.

Electrical Parameters

Supply

• VCC (module input): 3.3 V nominal
• On-board regulation:
  • CC2564C powered directly from power input
  • I/O domain: 1.8 V (generated internally, exposed as VDD_1V8)
• Typical consumption:
  • TX (GFSK, max power): ~100 mA
  • LE advertising: 200 µA average
  • Shutdown: less than 10 µA

UART Interface (HCI)

• Transport: H4 (UART)
• Baud rate: 38.4 kbit/s to 4 Mbit/s
• Hardware flow control required (RTS/CTS)

The controller signals boot completion by asserting RTS low after reset.

Audio Interface (PCM / I²S)

• PCM master or slave mode
• Up to 4.096 MHz bit clock
• Suitable for HFP, A2DP and other audio profiles

Note: Assisted modes (WBS, A2DP assist) cannot be used simultaneously with LE mode.