The HS6621 is a power-optimized true system-on-chip (SoC) solution for both Bluetooth low energy and proprietary 2.4-GHz applications. It integrates a high performance and low power RF transceiver with Bluetooth base band and rich peripheral IO extension. HS6621 also integrates a power management to provide high-efficient power management. It targets 2.4-GHz Bluetooth low energy systems, proprietary 2.4-GHz systems, Human-Interface Devices (keyboard, mouse, and remote control), sports and leisure equipment, mobile phone accessories and consumer electronics.

HS6621 on-chip Bluetooth system compliant with version 5.0, support all of Bluetooth standard 5.0 feature. The chip integrates up to 128Mhz high-performance MCU, DMA, GPIO, I2S, I2C, SPI, UART, TIMER, RTC, watch dog, supports 32Mhz external crystal, integrates multi-purpose 12 bit ADC， AUDIO ADC, PPG Heart rate detection, Touch sensor controller. The HS6621 integrates on chip 256KB ROM, 256K SRAM and supports user defined IDE system, on chip SFLASH MCU development and JTAG software upgrade.