The HS6621Cx family is a single-mode, low-power Bluetooth 5.1 System-on-Chip (SOC). It can be configured as a Broadcaster, an Observer, a Central, and a Peripheral and supports the combination of all the above roles, making it an ideal choice for Internet of Things (IOT) and smart wearable devices.
Based on ARM® Cortex®-M4F CPU core, the HS6621C integrates Bluetooth 5.1 protocol stacks, a 2.4 GHz RF transceiver, programmable Flash memory, RAM, and multiple peripherals.
HS6621Cx series includes HS6621CG, HS6621CQ, and HS6621CM.

RF transceiver
• -95dBm sensitivity @1Mbps
• -93dBm sensitivity @2Mbps
• -96dBm sensitivity @500Kbps
• -100dBm sensitivity @125Kbps
• TX power -20~7dBm
• RSSI (1db resolution)
CPU
• ARM® Cortex™-M4F, max 64MHz
• Serial Wire Debug (SWD)
Memory
• 64KB SRAM
• 48KB ROM
• SFLASH
• HS6621CG: 8Mb
• HS6621CQ: 4Mb
• HS6621CM: 4Mb
Clocks
• HS6621CG: 32MHz crystal, 32MHz RC, 32.768KHz crystal, 32.768KHz RC
• HS6621CQ: 32MHz crystal, 32MHz RC, 32.768KHz RC
• HS6621CM: 32MHz crystal, 32MHz RC, 32.768KHz crystal, 32.768KHz RC
Link Controller
• BT 5.1 LE PHY, link controller
• Proprietary 2.4-GHz link controller
Power Management
• Supply voltage range 1.8V~3.6V
• 5.3mA peak current in RX
• 5.2mA peak current in TX (0dBm)
• 0.4uA in Hibernation mode without RTC clock
• 0.8uA in Hibernation mode with RTC clock
• 2.5uA in deep sleep mode
• Integrated DCDC BUCK Converter
• Integrated Charger
Software
• Full compliant with BLE version 5.1, complete power-optimized stack,
including controller and host
• Supports BT mesh network
• Support BLE sample applications and profiles
• Support HCI controller interface
• Support 6 Low PAN
• Support OTA
Peripherals
• 8 channels DMA
• UART x 2
• I2S interface
• Flexible General Purpose IOs
• HS6621CG: 32 general-purpose I/O GPIOs (max)
• HS6621CM: 17 general-purpose I/O GPIOs (max)
• HS6621CQ: 21 general-purpose I/O GPIOs (max)
• I2C (master or slave) x 3
• SPI (master or slave) x 2
• QSPI LCD/AMOLED controller
• QSPI Flash controller
• Watchdog to prevent system dead lock
• RTC
• Timers(32bit) x 3
• PWM 3 x 4
• Keyboard controller
• Three way QDEC
• Flexible GP-ADC
• HS6621CG/HS6621CQ:8 single-end or differential-end 12bits GP-ADC
• HS6621CM:6 single-end or differential-end 12bits GP-ADC
Audio ADC
• HS6621CG: Audio 16-bit ADC，SNR 93dB
• HS6621CM: Audio 16-bit ADC，SNR 93dB
• Touch sensor controller
• Fully programmable pin assignment
• AES128 HW encryption
• HW Random Number Generator
• Digital signal processing (DSP) instructions
Package
• HS6621CG: 48-pin 6x6mm QFN48
• HS6621CM: 32-pin 4x4mm QFN32
• HS6621CQ: 32-pin 4x4mm QFN32

BLE Mesh, LE 1M PHY

Products are applied in the fields of smart phones, feature phones, tablets, personal computers, wireless mouses, keyboards and smart home products, etc.

 EVB Core PCB
 EVB Core SCH(pdf)
 EVB Core SCH
 
Development Demo
 HS6621CG_Bracelet_DEMO_SCH_V1.5 (pdf)
 HS6621CG_Bracelet_DEMO_V1.5 
 HS6621_Bracelet_UI_design_Guide_V1(pdf)