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STM32F103C8T6 "Blue Pill"Arduino Nano

Structured comparison

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Comparison of STM32F103C8T6 "Blue Pill", Arduino Nano
Attribute	STM32F103C8T6 "Blue Pill"STM32F103C8T6	Arduino NanoA000005
Overview
Manufacturer	Generic / various (STMicroelectronics chip)	Arduino
Category	STM32	Arduino
Object type	devboard	devboard
Package	Breakout Board	Module
Documented pins	41	26
Interfaces	CAN, I2C, SPI, UART, USB	I2C, SPI, UART
Lifecycle	Unknown	ACTIVE
Physical pin mapping	Unknown	Unknown
Browser simulation	Not available	Available
Electrical
Core	ARM Cortex-M3Source	AVR 8-bit (ATmega328P)Source
Max Clock	72 MHzSource	16 MHzSource
Flash	64 KBSource 64KB per the official "C8" density code. Some boards are reported to carry mislabeled higher-density (128KB) dies, but that isn't guaranteed — don't design around it.	32 KBSource ~0.5KB is used by the bootloader.
SRAM	20 KBSource	2 KBSource
Logic Voltage	3.3 VSource	5 VSource
Onboard Regulator	Yes Some LDO is always fitted; the specific part and its quality vary by manufacturer.	YesSource
Operating Voltage	Varies by vendor Board accepts 5V via USB or the labelled 5V pin, regulated to 3.3V by an onboard LDO — the specific regulator fitted (and how well it holds up under load) varies noticeably between manufacturers.	7 – 12 VSource Recommended input range on VIN; the board also runs directly from 5V USB.
Interface
GPIO Count	37Source Chip-level GPIO count for the LQFP48 package used on this board.	22Source 14 digital (D0-D13) + 8 analog (A0-A7); A6/A7 are analog-input only.
ADC Channels	10Source External channels on the LQFP48 package (two 12-bit ADCs sharing these inputs).	8Source
ADC Resolution	12 bitSource	10 bitSource
Wi-Fi	NoSource	NoSource
Bluetooth	NoSource	NoSource
Interfaces	i2c, spi, uart, can, usbSource	i2c, spi, uartSource
Physical
USB Connector	micro-usbSource Consistent across clones, unlike most other board-level details.	Varies by vendor The official original Nano used Mini-USB; most Nanos sold today are clones that ship with Micro-USB instead — check your specific board.
Package	Breakout Board	ModuleSource
Length	Varies by vendor Commonly cited around 53×22mm, but as a generic cloned design the PCB outline is not guaranteed consistent across sellers.	45 mmSource
Width	Unknown	18 mmSource
Weight	Unknown	7 gSource
Mounting	tht Two 1×20 0.1" pin-header rows.	thtSource
Header Format	custom Its own 2×20-pin layout — not Arduino/Feather/Pi-HAT compatible.	arduino-nanoSource
Thermal
Min Operating Temp	-40 °CSource Chip-level industrial rating.	Unknown
Max Operating Temp	85 °CSource	Unknown

Overview

Manufacturer

STM32F103C8T6 "Blue Pill": Generic / various (STMicroelectronics chip)
Arduino Nano: Arduino

Object type

STM32F103C8T6 "Blue Pill": devboard
Arduino Nano: devboard

Package

STM32F103C8T6 "Blue Pill": Breakout Board
Arduino Nano: Module

Documented pins

STM32F103C8T6 "Blue Pill": 41
Arduino Nano: 26

Interfaces

STM32F103C8T6 "Blue Pill": CAN, I2C, SPI, UART, USB
Arduino Nano: I2C, SPI, UART

Lifecycle

STM32F103C8T6 "Blue Pill": Unknown
Arduino Nano: ACTIVE

Physical pin mapping

STM32F103C8T6 "Blue Pill": Unknown
Arduino Nano: Unknown

Browser simulation

STM32F103C8T6 "Blue Pill": Not available
Arduino Nano: Available

Electrical

Core

STM32F103C8T6 "Blue Pill": ARM Cortex-M3Source
Arduino Nano: AVR 8-bit (ATmega328P)Source

Max Clock

STM32F103C8T6 "Blue Pill": 72 MHzSource
Arduino Nano: 16 MHzSource

Flash

STM32F103C8T6 "Blue Pill": 64 KBSource
64KB per the official "C8" density code. Some boards are reported to carry mislabeled higher-density (128KB) dies, but that isn't guaranteed — don't design around it.
Arduino Nano: 32 KBSource
~0.5KB is used by the bootloader.

SRAM

STM32F103C8T6 "Blue Pill": 20 KBSource
Arduino Nano: 2 KBSource

Logic Voltage

STM32F103C8T6 "Blue Pill": 3.3 VSource
Arduino Nano: 5 VSource

Onboard Regulator

STM32F103C8T6 "Blue Pill": Yes
Some LDO is always fitted; the specific part and its quality vary by manufacturer.
Arduino Nano: YesSource

Operating Voltage

STM32F103C8T6 "Blue Pill": Varies by vendor
Board accepts 5V via USB or the labelled 5V pin, regulated to 3.3V by an onboard LDO — the specific regulator fitted (and how well it holds up under load) varies noticeably between manufacturers.
Arduino Nano: 7 – 12 VSource
Recommended input range on VIN; the board also runs directly from 5V USB.

Interface

GPIO Count

STM32F103C8T6 "Blue Pill": 37Source
Chip-level GPIO count for the LQFP48 package used on this board.
Arduino Nano: 22Source
14 digital (D0-D13) + 8 analog (A0-A7); A6/A7 are analog-input only.

ADC Channels

STM32F103C8T6 "Blue Pill": 10Source
External channels on the LQFP48 package (two 12-bit ADCs sharing these inputs).
Arduino Nano: 8Source

ADC Resolution

STM32F103C8T6 "Blue Pill": 12 bitSource
Arduino Nano: 10 bitSource

Wi-Fi

STM32F103C8T6 "Blue Pill": NoSource
Arduino Nano: NoSource

Bluetooth

STM32F103C8T6 "Blue Pill": NoSource
Arduino Nano: NoSource

Interfaces

STM32F103C8T6 "Blue Pill": i2c, spi, uart, can, usbSource
Arduino Nano: i2c, spi, uartSource

Physical

USB Connector

STM32F103C8T6 "Blue Pill": micro-usbSource
Consistent across clones, unlike most other board-level details.
Arduino Nano: Varies by vendor
The official original Nano used Mini-USB; most Nanos sold today are clones that ship with Micro-USB instead — check your specific board.

Package

STM32F103C8T6 "Blue Pill": Breakout Board
Arduino Nano: ModuleSource

Length

STM32F103C8T6 "Blue Pill": Varies by vendor
Commonly cited around 53×22mm, but as a generic cloned design the PCB outline is not guaranteed consistent across sellers.
Arduino Nano: 45 mmSource

Width

STM32F103C8T6 "Blue Pill": Unknown
Arduino Nano: 18 mmSource

Weight

STM32F103C8T6 "Blue Pill": Unknown
Arduino Nano: 7 gSource

Mounting

STM32F103C8T6 "Blue Pill": tht
Two 1×20 0.1" pin-header rows.
Arduino Nano: thtSource

Header Format

STM32F103C8T6 "Blue Pill": custom
Its own 2×20-pin layout — not Arduino/Feather/Pi-HAT compatible.
Arduino Nano: arduino-nanoSource

Thermal

Min Operating Temp

STM32F103C8T6 "Blue Pill": -40 °CSource
Chip-level industrial rating.
Arduino Nano: Unknown

Max Operating Temp

STM32F103C8T6 "Blue Pill": 85 °CSource
Arduino Nano: Unknown

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Compare electronics parts

Choose 2–4 parts

Structured comparison

Overview

Manufacturer

Category

Object type

Package

Documented pins

Interfaces

Lifecycle

Physical pin mapping

Browser simulation

Electrical

Core

Max Clock

Flash

SRAM

Logic Voltage

Onboard Regulator

Operating Voltage

Interface

GPIO Count

ADC Channels

ADC Resolution

Wi-Fi

Bluetooth

Interfaces

Physical

USB Connector

Package

Length

Width

Weight

Mounting

Header Format

Thermal

Min Operating Temp

Max Operating Temp