Industrial Grade Low Power General Purpose Microcontrollers CH32L103

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Overview

CH32L103 is an industrial-grade low-power general-purpose microcontroller designed based on barley RISC-V core.CH32L103 built-in USB and PD PHY, support for PDUSB, including USB Host host and USB Device device function, USB PD and Type-C fast charging function, built-in low-power timer, provides a group of OPA op-amps, 3 groups of CMP voltage comparator, 4 groups of USART serial interface, 2 I2C interfaces, 2 SPI interfaces, 1 CAN interface, multiple timers, 12-bit ADC, 10-way Touchkey and other rich peripheral resources.

System Block Diagram

Features

• Barley 32-bit RISC-V4C core

• Supports RV32IMAC instruction set and self-expanding instructions

• Fast programmable interrupt controller + hardware interrupt stack

• Branch prediction, conflict handling mechanism

• Single-cycle multiplication, hardware division

• System frequency 96MHz

• Maximum 20KB volatile data storage SRAM

• CodeFlash 64KB program memory max.

• 3328B BootLoader system bootloader storage area

• 256B system non-volatile configuration information storage area

• 256B user-defined information storage area

• System power supply VDD rating: 3.3V

• Low power modes: sleep, stop, standby

• VBAT power supply independently for RTC and backup registers.

• Built-in factory-tuned 8MHz RC oscillator

• Built-in RC oscillator of about 40KHz.

• Built-in PLL with optional CPU clock up to 96MHz.

• External support for high speed oscillator from 3 to 25MHz

• External support for 32.768KHz low-speed oscillator

• Power on/off reset, programmable voltage monitor

• Real-time clock RTC: 32-bit independent timer

• 8-way general-purpose DMA controller: 8 channels, support ring buffer management

• DMA support TIMx/ADC/USART/I2C/SPI

• 3 analog voltage comparators CMP: 2 input channels each, optional common reference voltage pin, optional output to I/O or internal direct trigger TIM2

• 1 group op-amp OPA/PGA/voltage comparator: multiple input channels, selectable multi-step gain, multiple output channels, selectable ADC pins

• 12-bit analog-to-digital ADC: analog input range VSSA ~ VDDA

• 10 external signal channels + 2 internal signal channels

• On-chip temperature sensor

• 10 TouchKey channels detection

• 1 x 16-bit low-power timer

• 1 x 16-bit advanced timer providing deadband control and emergency brake, complementary PWM outputs for motor control

• 2 x 16-bit general purpose timers providing input capture/output compare/PWM/pulse count and incremental encoder inputs

• 1 32-bit general purpose timer

• 2 x Watchdog Timers: Standalone and Windowed

• System time base timer: 64-bit counter

• 4 x USART serial ports: supports LIN and ISO7816

• 2 x I2C interfaces: SMBus/PMBus support

• 2 x SPI interfaces

• 1 group CAN interface (2.0B active): support CANFD protocol

• USB2.0 Full Speed Controller and PHY: support USB host or USB device

• USB PD and Type-C controller and PHY: support DRP, Sink and Source applications, support PDUSB

• 37 I/O ports, support 16 external interrupts

• Security features: chip unique ID

• Debug mode: Serial 2-wire debug interface SDI

• Packages: LQFP, QFN, QSOP and TSS