embedded-processors-controllers

STM32F103C8

Full part number: STM32F103C8T6

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This ST Microelectronics datasheet covers the STM32F103x8 and STM32F103xB medium-density 32-bit microcontrollers. The document details these Arm Cortex-M3 based devices, which feature 64 or 128 KB of Flash memory and 20 KB of SRAM. Key performance parameters include a maximum clock speed of 72 MHz, an application supply voltage range of 2.0 to 3.6 V, and up to 80 fast I/O ports. Connectivity options span nine interfaces including USB 2.0 full-speed, CAN 2.0B Active, SPI at 18 Mbit/s, and up to three USARTs. Additional features comprise seven timers, two 12-bit ADC converters, low-power modes, and debug capabilities via SWD or JTAG. Available in various packages like LQFP, BGA, and UFQFPN.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — 23.5 µA 370 µA 24
output current — — 25 mA
supply voltage range 2 V — 3.6 V
operating temperature -40 °C — 85 °C Maximum power dissipation
clock frequency 0 Hz — 72 MHz
power dissipation — — 454 mW LFBGA100
input capacitance — 5 pF —
cpu speed — 72 MHz —
program memory size — 65.5 kB —
ram size — 20.5 kB —
io count — 37 —
adc resolution — 12 bit —
core size — 32 bit —
rise time 4 ns — 20 ns CL = 50 pF
fall time 4 ns — 20 ns CL = 50 pF
data retention 30 year — — 1 kcycle(2)at TA = 85 °C
program erase cycles 10 kcycle — — TA = -40 to +85 °C (6 suffix versions)TA = -40 to +105 °C (7 suffix versions)
load capacitance — 30 pF — RS = 30 Ω
sample rate 50 kHz — 1 MHz
03 — Alternatives

Closest matches to STM32F103C8

STM32F103B 3.4× higher quiescent current, 2.0× higher program memory size, similar adc resolution
CH32V203C6T6 7.7× higher quiescent current, 4.5× lower clock frequency, 2.0× higher cpu speed
GD32F103RFT6 11.7× higher program memory size, 10.0× higher program erase cycles, 5.8× lower clock frequency
STM32F405OET6 9.6× higher ram size, 8.0× higher program memory size, 7.8× lower quiescent current
STM32F411CCU6 6.4× higher ram size, 4.0× higher program memory size, 2.4× lower clock frequency
STM32F030C4K6 10.0× lower program erase cycles, 7.4× higher quiescent current, 5.0× lower ram size
STM32G071C8 8.3× higher rise time, 2.4× lower fall time, 1.8× higher ram size
STM32L010F4P6 10.0× lower ram size, 4.0× lower program memory size, 2.2× lower clock frequency
04 — FAQ

Frequently asked questions

What is the ADC resolution of the STM32F103C8T6?

The ADC resolution is 12 bit.

What is the maximum clock frequency of the STM32F103C8T6?

The maximum clock frequency is 72 MHz.

What is the core size of the STM32F103C8T6?

The core size is 32 bit.

What is the maximum CPU speed of the STM32F103C8T6?

The maximum CPU speed is 72 MHz.

What is the data retention period for the STM32F103C8T6 under the condition of 1 kcycle(2)at TA = 85 °C?

The data retention is 30 year.

What is the fall time when CL = 50 pF?

The fall time is 20 ns.

What is the input capacitance of the STM32F103C8T6?

The input capacitance is 5 pF.

How many I/O pins does the STM32F103C8T6 have?

The STM32F103C8T6 has 37 I/O pins.

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