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MCU

8 parts

General-purpose microcontrollers verified for JLC assembly — ARM Cortex-M parts (STM32, GD32), ESP32 wireless SoCs, and the RP2040. All entries include footprints and symbols, so they drop straight into a board.

How to choose

ESP32 family — built-in Wi-Fi/BLE; the default for connected devices.
STM32 / GD32 — wide peripheral mix, low power modes, mature tooling for product firmware.
RP2040 — cheap, dual-core, great docs; needs external flash and has no low-power story.
Check the JLC class: Basic parts avoid the extended-feeder fee at assembly.

	Part	LCSC	Description	Package	JLC class
	ATMEGA328P-AU MICROCHIP(美国微芯)	C14877	Low-power CMOS 8 Bit AVR MCU, 20MHz max, 32KB FLASH, 2KB RAM, 1KB EEPROM, 23 I/O, 10bit ADC, 1.8V~5.5V supply.	TQFP-32(7x7)	Extended Part
	RP2040 Raspberry Pi(树莓派)	C2961140	Microcontroller.	QFN-56-EP(7x7)	Extended Part
	STM32F103C8T6 ST(意法半导体)	C8734	Mainstream enhanced ARM Cortex-M3 MCU, 64 KB Flash, 72 MHz CPU, motor control, USB and CAN, 2V~3.6V.	LQFP-48(7x7)	Extended Part
	STM32F103CBT6 ST(意法半导体)	C8304	Mainstream enhanced ARM-M3 MCU, 72MHz, 128KB FLASH, 37 I/O, 12bit ADC, motor control, USB and CAN, 2V~3.6V.	LQFP-48(7x7)	Extended Part
	STM32G0B1CBT6 ST(意法半导体)	C2847904	Mainstream Arm Cortex-M0+ 32-bit MCU, up to 128KB Flash, 144KB memory, 6 USART, timers, ADC, DAC, interfaces, 1.7-3.6V.	LQFP-48(7x7)	Extended Part
	STM32G431CBU6 ST(意法半导体)	C529356	170MHz ARM Cortex-M4 MCU with DSP, FPU, 128KB FLASH, math accelerator, 42 I/O, 12bit ADC/DAC, 1.71V~3.6V.	UFQFPN-48(7x7)	Extended Part
	STM32H743VIT6 ST(意法半导体)	C114409	High-performance ARM Cortex-M7 MCU with DSP, DP-FPU, 2MB Flash, 1MB RAM, 480MHz CPU, 82 I/O, 16bit ADC, 12bit DAC, 1.71V~3.6V.	LQFP-100(14x14)	Extended Part
	STM32L476RGT6 STMicroelectronics	C74797	Ultra-low-power ARM Cortex-M4 MCU with CAN	LQFP-64_L10.0-W10.0-P0.50-LS12.0-BL	Extended Part

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