GD32F503

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Overview

GD32F503 series MCUs operate at a maximum frequency of 252 MHz, leveraging the efficient Arm^® v8-M architecture with built-in advanced DSP hardware accelerators and a single-precision floating-point unit (FPU). They integrate three ADCs with sampling rates of up to 3 Msps (supporting up to 25 channels), along with one fast comparator and one DAC, enabling features such as rapid protection. Additionally, the series supports up to three SPIs, two I2Ss, two I2Cs, three USARTs, two UARTs, two CAN-FDs, and one USBFS interface, facilitating seamless connectivity with various external devices.

The GD32F503 series MCUs are available in multiple package options, including LQFP100/64/48, QFN64/48, and BGA64.

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Part No	Core	Series	Package QFN64 QFN48 QFN32 LQFP64 LQFP48 LQFP100 BGA64	Max Speed (MHz)	Flash (Bytes) 128K 256K 512K 1024K	SRAM (Bytes) 64K 128K	I/O up to 80 up to 56 up to 51 up to 41 up to 37 up to 26	GPTM (32bit)	GPTM (16bit)	Advanced TM (16bit)	Basic TM (16bit)	SysTick (24bit)	WDG	RTC	USART+UART 2+0 3+2 3+0	I2C	SPI ≥ ≤	I2S ≥ ≤	CAN 2.0B	USB 2.0	EXMC ≥ ≤	12bit ADC Units (CHs) 3(25) 3(19) 3(18) 3(14) 3(12) 3(10)	12bit DAC Units	Comp
GD32F503KBU6	Cortex®-M33	GD32F503	QFN32	252	128K	64K	up to 26	1	5	2	2	1	2	1	2+0	2	2	1	2xFD	FS	0	3(10)	1	1
GD32F503KCU6	Cortex®-M33	GD32F503	QFN32	252	256K	64K	up to 26	1	5	2	2	1	2	1	2+0	2	2	1	2xFD	FS	0	3(10)	1	1
GD32F503KEU6	Cortex®-M33	GD32F503	QFN32	252	512K	64K	up to 26	1	5	2	2	1	2	1	2+0	2	2	1	2xFD	FS	0	3(10)	1	1
GD32F503CBT6	Cortex®-M33	GD32F503	LQFP48	252	128K	64K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CCT6	Cortex®-M33	GD32F503	LQFP48	252	256K	64K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CET6	Cortex®-M33	GD32F503	LQFP48	252	512K	64K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CGT6	Cortex®-M33	GD32F503	LQFP48	252	1024K	128K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CEO6	Cortex®-M33	GD32F503	QFN48	252	512K	64K	up to 41	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(14)	1	1
GD32F503CGO6	Cortex®-M33	GD32F503	QFN48	252	1024K	128K	up to 41	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(14)	1	1
GD32F503RBT6	Cortex®-M33	GD32F503	LQFP64	252	128K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RCT6	Cortex®-M33	GD32F503	LQFP64	252	256K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RET6	Cortex®-M33	GD32F503	LQFP64	252	512K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RGT6	Cortex®-M33	GD32F503	LQFP64	252	1024K	128K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503REO6	Cortex®-M33	GD32F503	QFN64	252	512K	64K	up to 56	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(19)	1	1
GD32F503RGO6	Cortex®-M33	GD32F503	QFN64	252	1024K	128K	up to 56	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(19)	1	1
GD32F503REL6	Cortex®-M33	GD32F503	BGA64	252	512K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RGL6	Cortex®-M33	GD32F503	BGA64	252	1024K	128K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503VCT6	Cortex®-M33	GD32F503	LQFP100	252	256K	64K	up to 80	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(25)	1	1
GD32F503VET6	Cortex®-M33	GD32F503	LQFP100	252	512K	64K	up to 80	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(25)	1	1
GD32F503VGT6	Cortex®-M33	GD32F503	LQFP100	252	1024K	128K	up to 80	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(25)	1	1
GD32F503KBU7	Cortex®-M33	GD32F503	QFN32	252	128K	64K	up to 26	1	5	2	2	1	2	1	2+0	2	2	1	2xFD	FS	0	3(10)	1	1
GD32F503KCU7	Cortex®-M33	GD32F503	QFN32	252	256K	64K	up to 26	1	5	2	2	1	2	1	2+0	2	2	1	2xFD	FS	0	3(10)	1	1
GD32F503KEU7	Cortex®-M33	GD32F503	QFN32	252	512K	64K	up to 26	1	5	2	2	1	2	1	2+0	2	2	1	2xFD	FS	0	3(10)	1	1
GD32F503CBT7	Cortex®-M33	GD32F503	LQFP48	252	128K	64K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CCT7	Cortex®-M33	GD32F503	LQFP48	252	256K	64K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CET7	Cortex®-M33	GD32F503	LQFP48	252	512K	64K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CGT7	Cortex®-M33	GD32F503	LQFP48	252	1024K	128K	up to 37	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(12)	1	1
GD32F503CEO7	Cortex®-M33	GD32F503	QFN48	252	512K	64K	up to 41	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(14)	1	1
GD32F503CGO7	Cortex®-M33	GD32F503	QFN48	252	1024K	128K	up to 41	1	5	2	2	1	2	1	3+0	2	3	2	2xFD	FS	0	3(14)	1	1
GD32F503RBT7	Cortex®-M33	GD32F503	LQFP64	252	128K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RCT7	Cortex®-M33	GD32F503	LQFP64	252	256K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RET7	Cortex®-M33	GD32F503	LQFP64	252	512K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RGT7	Cortex®-M33	GD32F503	LQFP64	252	1024K	128K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503REO7	Cortex®-M33	GD32F503	QFN64	252	512K	64K	up to 56	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(19)	1	1
GD32F503RGO7	Cortex®-M33	GD32F503	QFN64	252	1024K	128K	up to 56	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(19)	1	1
GD32F503REL7	Cortex®-M33	GD32F503	BGA64	252	512K	64K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503RGL7	Cortex®-M33	GD32F503	BGA64	252	1024K	128K	up to 51	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(18)	1	1
GD32F503VCT7	Cortex®-M33	GD32F503	LQFP100	252	256K	64K	up to 80	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(25)	1	1
GD32F503VET7	Cortex®-M33	GD32F503	LQFP100	252	512K	64K	up to 80	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(25)	1	1
GD32F503VGT7	Cortex®-M33	GD32F503	LQFP100	252	1024K	128K	up to 80	1	5	2	2	1	2	1	3+2	2	3	2	2xFD	FS	1	3(25)	1	1

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Datasheet（1）
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  GD32F503xx_Datasheet_Rev0.9RC1
  
  2025-11-3
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User Manual（1）
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  GD32F50x User Manual_Rev1.0
  
  2025-11-03
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Application Note（28）
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Firmware Library（1）
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  GD32F50x_Firmware_Library_V1.0.0
  
  2025-11-03
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AddOn（1）
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  GD32F50x_AddOn_V1.0.0
  
  2025-11-03
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Demo Suites（1）
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  GD32F50x_Demo_Suites_V1.0.0
  
  2025-11-03
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  GD32 Embedded Builder
  
  2025-09-28
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