Main System

• Two 32-bit RISC-V CPUs
• The clock frequency is 16 MHz * N and the maximum frequency is 48 MHz.
• Built-in 32 kHz RC crystal oscillator and external 32.768 kHz crystal oscillator
• 1 MB flash. 8 mS erasing time and 4 mA program power consumption
• Built-in 128 KB SRAM
• Maximum reserved memory: 16 Kbyte
• Supported encryption engines: TDES/AES-256/RSA-2048/SHA-256, 384, and 512
• Support TRNG (True Random Number Generator)
• Built-in voltage sensor
• Built-in temperature monitor
• Support single SPI access to external flash (no space restrictions). Do not support external flash execution instructions.
• Support seven differential or single-ended ADCs
• 20+ GPIOs
• Four UARTs
• Supports I2C, SPI, PWM, and timer interfaces
• Supports two watchdog timers

NFC

• Support the NFC tag function and 13.56 M non-contact communication solution

• High-sensitivity demodulation circuit, depending on external antennas and the read-write distance up to 10 cm

• Support approaching field energy to wake up the main chip

• TX and RX support 64 byte buffer 

PHY/RF

• Frequency range: 2.4 GHz - 2.5 GHz

• Supports 2 Mbps, 1 Mbps, 500 kbps, and 125 kbps RX&TX

• Number of RF front-end components: 3

• RX sensitivity: -105dbm @ 125kbps

• CRC: 24-bit (The initial value is configurable.)

• Length of preamble: 8 us/16 us/24 us/32 us (configurable)

• Support 4 byte sync ID

• Length of data per frame: 0 byte – 512 byte (configurable)

• Broadcast channel frequency: 3 channels (configurable)

• GFSK frequency deviation: 150 K – 300 K (configurable)

• TX Power control range: -40 dbm - +8 dbm

• TX power control length: 1 db 

Power

• Sleep mode power consumption: <0.5 μA (no memory reserved)

• Deep sleep power consumption: <2 μA (memory reserved)

Operating environment

• Input power: 2.0 V - 3.6 V
• Storage temperature: 30℃
• Storage humidity: 60%RH
• Operating temperature: -40℃ - 85℃
• Maximum junction temperature: 125℃