embedded-processors-controllers

STM32F405

Full part number: STM32F405OET6

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

01 — Overview

This STMicroelectronics datasheet covers the STM32F405xx and STM32F407xx microcontroller families. It details high-performance 32-bit ARM Cortex-M4 MCUs with an embedded FPU, operating up to 168MHz. Key parameters include a supply voltage of 1.8V to 3.6V, a maximum clock speed of 168MHz, and up to 1MB of Flash memory. The devices feature 192+4KB of RAM, 210DMIPS performance, and support for USB OTG, Ethernet, and multiple communication interfaces like SPI, I2C, and USART.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current 3 µA 3 µA 3.4 µA Backup SRAM ON, low-speed oscillator and RTC ON
output current — — 25 mA
supply voltage range -300 mV — 4 V
operating temperature -40 °C — 85 °C Maximum power dissipation
clock frequency 600 kHz 15 MHz 18 MHz VDDA = 1.8(1)(3)to 2.4 V
power dissipation — — 435 mW LQFP64
input capacitance — 5 pF —
psrr — -67 dB -40 dB No RLOAD, CLOAD = 50 pF
cpu speed — 168 MHz —
program memory size — 524 kB —
ram size — 197 kB —
io count — 72 —
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
contact current — 20 µA — VDD = 3.3 V(2)C = CINT; 2 MHz
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)
settling time — 3 µs 6 µs
03 — Alternatives

Closest matches to STM32F405

STM32F411CCU6 2.5× higher contact current, 2.0× lower program memory size, 1.5× lower ram size
GD32F103RFT6 10.0× higher program erase cycles, 10.0× lower settling time, 2.4× lower clock frequency
STM32F103B 9.6× lower ram size, 4.0× lower program memory size, 2.4× higher clock frequency
STM32F103C8T6 9.6× lower ram size, 8.0× lower program memory size, 7.8× higher quiescent current
STM32G431x6 16.0× lower program memory size, 6.0× lower ram size, 5.7× higher clock frequency
GD32F303CCT5 10.0× higher program erase cycles, 10.0× lower settling time, 4.9× lower clock frequency
GD32F303CCT6 10.0× higher program erase cycles, 10.0× lower settling time, 4.9× lower clock frequency
STM32G071C8 8.3× higher rise time, 8.0× lower program memory size, 5.3× lower ram size
04 — FAQ

Frequently asked questions

What is the ADC resolution of the STM32F405OET6?

The ADC resolution is 12 bit.

What is the clock frequency when VDDA = 1.8(1)(3)to 2.4 V?

The clock frequency is 15 MHz.

What is the contact current for the STM32F405OET6?

The contact current is 20 µA when VDD = 3.3 V(2)C = CINT; 2 MHz.

What is the core size of the STM32F405OET6?

The core size is 32 bit.

What is the maximum CPU speed of the STM32F405OET6?

The maximum CPU speed is 168 MHz.

What is the data retention period for the STM32F405OET6 after 1 kcycle 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 when CL = 50 pF.

What is the input capacitance?

The input capacitance is 5 pF.

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