CSM32RV20

CSM32RV20 is a low-power MCU chip based on the RISC-V.

Key features

• Built-in RISC-V RV32IMAC Core（2.6 CoreMark/MHz）
• The working frequency is up to 32MHz
• Built-in 4kB SRAM
• The built-in 8B ALWAYS register and can save the data in the PD2
• Built-in 40kB embedded FLASH, 512B NVM, can ERASE and Program at least 100,000 times
• Built-in 2 SPI MASTER
• Built-in 1 I²C MASTER
• Built-in 4 UART, maximum rate 1Mbps
• Built-in 2 TIMER, each TIMER supports the 4 channel complementary PWM output
• With a rapid precision of 13/14/15/16bit ADC, 1.2v high precision reference
• Wide ADC input voltage range: 0 ~ VDD（VDD ≤ 4.8V）
• The ADC supports 11 input channels and supports up to 9 touch key
• Built-in 3 rapid comparators
• Built-in low voltage detection module
• Built-in RF detection module
• Most of the 30 GPIO, where PA supports external interrupts (with up to 16 external interrupts)
• Built-in hardware Watchdog
• Built-in 1 RTC, not working in PD2 mode
• Supports 4 low power modes, minimum power consumption less than 1uA (Watchdog working)
• Built-in 32-bit real random number generator
• Support serial port and wireless ISP online upgrade (wireless ISP needs to be external to the Si24R1)
• Support the cjtag 2-line debugging interface
• Working voltage range: 1.8 ~ 5.5v
• Working temperature range: -40 ~ 105°C
• 4x4mm QFN32 package、TSSOP20 or QFN20 package