openwch / ch32f20x

The SDK and HDK for CH32F20x

32-bit Enhanced Low-power Cortex-M3 MCU-CH32F203

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Overview

CH32F203 series is an industrial-grade enhanced low-power general-purpose microcontroller designed based on 32-bit Cortex-M3 core, with high performance, supporting up to 144MHz system main frequency, low-power consumption, running at the highest system main frequency with power consumption as low as 69uA/MHz. CH32F203 integrates dual USB interfaces, supporting USB Host and USB Device functions, has 1 CAN interface (2.0B active), dual OPAs, 4 UARTs, dual I2C, 12-bit ADC, 10-channel Touchkey and other rich peripheral resources.

System Block Diagram

Features

• Cortex-M3 core, up to 144MHz system main frequency
• Single-cycle multiplication and hardware division support 20KB SRAM, 64KB Flash
• Power supply voltage: 2.5/3.3V, GPIO unit independent power supply
• Multiple low-power modes: Sleep, Stop, Standby
• Run mode as low as 69.3uA/MHz
• Sleep mode as low as 22.4uA/MHz
• Power on/off reset, programmable voltage detector
• 1 set of 8-channel general-purpose DMA controller
• 2 sets of op-amp comparators
• 10-channel 12-bit ADC conversion, 10-channel TouchKey
• 4 sets of timers
• 1 USB2.0 full-speed host/device interface
• 1 USB 2.0 full-speed device interface
• 4 U(S)ART interfaces
• 1 CAN interface (2.0B active)
• 2 sets of I2C interfaces, 2 sets of SPI interfaces
• 37 I/O ports, can be mapped to 16 external interrupts
• CRC calculation unit, 96-bit chip unique ID
• 2-wire serial debug interface (SDW)
• Package: LQFP48, LQFP32

32-bit Wireless Cortex-M3 MCU - CH32F208

Overview

The CH32F208 is a wireless MCU based on the Cortex-M3 core. The system clock frequency can be up to 144MHz. The CH32F208 integrates 2Mbps Bluetooth Low Energy communication module, 10M Ethernet module (MAC+PHY), USB2.0 full-speed device interface and host/device interface, CAN controller, etc

System Block Diagram

Features

• Cortex-M3 core, up to 144MHz system clock frequency;
• Single-cycle multiplication and hardware division;
• 64KB SRAM, 128KB Flash;
• Supply voltage: 2.5/3.3V. GPIO unit is supplied independently;
• Low-power modes: sleep, stop, standby;
• Bluetooth Low Energy 5.3;
• 10M Ethernet controller (MAC+PHY);
• Power-on/power-down reset, programmable voltage detector;
• 2 op amp comparators;
• 16-channel 12-bit ADC converter, 16-channel TouchKey;
• 5 timers;
• USB2.0 full-speed host/device + device interface;
• 4 USARTs;
• One CAN interface (2.0B active);
• 2 IIC interfaces, 2 SPI interfaces;
• 53 I/O ports, can be mapped to 16 external interrupts;
• CRC calculation unit, 96-bit unique ID;
• Serial 2-wire debug interface;
• Packages: LQFP64M, QFN68;