OM6629 — Bluetooth Low Energy and 2.4 GHz Proprietary SoC

The OM6629 is a power-optimized true System-on-Chip (SoC) solution for Bluetooth Low Energy and proprietary 2.4 GHz applications. It integrates a high-performance, low-power RF transceiver, Bluetooth baseband, and extensive peripheral I/O expansion. The OM6629 also includes a power management unit (PMU) for efficient power management. It targets 2.4 GHz Bluetooth Low Energy systems, proprietary 2.4 GHz systems, human interface devices (keyboards, mice, and remotes), sports and leisure equipment, mobile accessories, and consumer electronics products.

The on-chip Bluetooth system is compatible with version 5.4. The chip integrates a high-performance MCU up to 96 MHz, DMA, GPIO, SPI, UART, timers, watchdog, supports 32 MHz external crystal, and includes a versatile up to 12-bit ADC. The OM6629 features 256 KB on-chip SRAM, 512-bit EFUSE, and supports user-defined IDE on-chip SFLASH MCU development as well as JTAG software upgrades.

Key Features

RF Transceiver

• Sensitivity: –100 dBm @ 1 Mbps GFSK

• –97 dBm @ 2 Mbps GFSK

• TX Power: –45 to +10 dBm

• RSSI (1 dB resolution)

CPU & Debug

• ARM Cortex-M4 (with FPU, up to 96 MHz)

• SWD interface

Memory

• 512-bit EFUSE

• 256 KB SRAM

• Serial Flash: 1 MB

• 8 KB I-Cache RAM

Clocks

• 32 MHz and 32.768 kHz crystal oscillators

• 32 MHz and 32.768 kHz RC oscillators

Link Controller

• BT 5.4 LE PHY & Link Controller

• Proprietary 2.4 GHz link controller

Power Management

• Single supply voltage: 1.71 V – 3.6 V

• RX peak current: 3.7 mA

• TX peak current (0 dBm): 4.2 mA

• Sleep current: 1.4 µA (16 KB RAM retained, 32 kHz RC OSC)
  2.2 µA (128 KB RAM retained)
  3.0 µA (256 KB RAM retained)

• Integrated DCDC Buck converter

• Shelf mode current: 200 nA

Software

• Compatible with Bluetooth 5.4

• Data rates: 1 Mbps, 2 Mbps, long-range 500/125 kbps (BLE)

• Configurable rates 25 kbps–2 Mbps (proprietary)

• Supports ESL

• Mesh networking

• Example applications & profiles

• OTA support

Peripherals

• Up to 38 GPIOs

• 8-ch GPDMA

• 3× UART (with FIFO, one with flow control, one with LIN)

• 2× I²C (master/slave)

• 1× I²S

• 2× SPI (master/slave)

• 2× QSPI (external flash & LCD)

• 1× USB 2.0 Full-Speed

• 1× QDEC

• LED PWM

• Multiple timers (32-bit/16-bit), LPTimer, Watchdog, PMU timer

• 8-ch single-ended or 4-ch differential 12-bit 1 Msps GPADC

• 16-bit Audio ADC (96 dB SNR)

• DMIC & AMIC

• Embedded IR transmitter

Security

• AES hardware encryption (AES-256/128)

• SHA256

• Hardware TRNG

• Secure boot & debug

Package & Environment

• OM6629C: QFN48 6×6 mm

• Operating temperature: –40°C to +85°C

The OM6629 is a practical and reliable wireless chip that combines low power consumption with high performance, perfectly meeting the needs of Bluetooth Low Energy and 2.4 GHz applications. Whether for keyboards/mice, fitness devices, or mobile accessories, it delivers stable connectivity and efficient power management. Developers can quickly build products with OTA updates and robust security. In the future, the OM6629 will continue to enable wireless interconnection for more devices — worth trying for your next project.