Operating Voltage Range: 2.5–5 V

Operating Temperature Range: −40°C to +125°C

Low-Power Modes: Sleep Mode, Shutdown Mode, and Standby Mode

Memory: 256 KB Flash, 64 KB ROM, and 64 KB RAM

Digital Communication Interfaces: UART, SPI, QSPI, I²C, I²S, and more

RISC-V Core: 2-stage pipeline; Supports branch prediction and prefetching; Supports the RV32I base integer instruction set and E/M/A/C extensions; Supports 32-bit instruction local memory (ILM) and data local memory (DLM);

EEG/ECG/EMG Signal Acquisition:Independent ECG acquisition with sampling rates up to 32 kHz;Programmable instrumentation amplifier (INA) gain: 1–100;Input-Referred Noise: <2.5 μV RMS (BW = 0.1–100 Hz, Gain = 6); AC and DC lead-off detection; Supports right-leg drive (RLD); 24-bit ADC analog front-end with programmable gain amplifier;

PPG Transmitter:Supports four LEDs in common-anode or H-bridge configurations;8-bit programmable LED drive current, up to 50 mA; Programmable LED timing and duty cycle;Supports two green LEDs for optimized heart rate monitoring;Supports red and infrared LEDs for SpO₂ measurement;Supports infrared LED-based proximity sensing