Si24R05 — Highly Integrated Low-Power SoC

Overview

The Si24R05 is a highly integrated, ultra-low-power SoC with low pin count and wide voltage range. It features a RISC-V RV32IMAC core (2.6 CoreMark/MHz) and rich peripherals: 13–16-bit ADC, LVD, UART, SPI, I2C, timers, WUP, IWDG, RTC, 2.4 GHz transceiver, 3D low-frequency wake-up receiver, and capacitive touch. Complete SDK and libraries drastically reduce development time.

Key Features

• Core: RISC-V RV32IMAC, up to 32 MHz

• Memory: 4 kB SRAM, 32 kB Flash, 4.5 kB NVM (≥100,000 cycles)

• Peripherals:

• 1× SPI Master, 1× I2C Master, 2× UART (up to 1 Mbps)

• 2× advanced timers (Timer1 with 4× complementary PWM)

• 64-bit SysTick, RTC, WUP, hardware watchdog

• 13/14/15/16-bit ADC (4 channels, 0–4.8 V, 1.2 V reference)

• Up to 4 GPIOs with interrupts, capacitive touch (3 ch)

• Wireless: Integrated 2.4 GHz transceiver + 3D LF wake-up receiver

• Power:

• 1.8–5.5 V operation

• 4 low-power modes, down to 0.6 μA (WDT on), 1.6 μA (deep sleep, radio off)

• Security: 32-bit TRNG

• Debug: cJTAG 2-wire

• Package: SOP16L (minimal BOM)

• Temperature: -40°C to +85°C

Development Support

Full technical support, samples, mature IDE, and rich libraries available.