STM32F405 Arm Cortex-M4 Microcontroller

20 January 2022 - 0 Comments

STM32F405 Microcontroller

STM32F405 Pinout

The STM32F405xx family is based on the high-performance Arm Cortex-M4 32-bit RISC core that can operate at a frequency of up to 168 MHz; The Cortex-M4 core features a Floating Point Unit (FPU) which supports all Arm single-precision data-processing instructions and data types. The STM32F405 series also incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to 192 Kbytes of SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals for seamless operation. All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, and a true random number generator (RNG). They also feature standard and advanced communication interfaces.

STM32F405 Pinout Configuration

Pin Num	Pin Name	Alternate functions	Additional functions
1	VBAT	-	-
2	PC13	EVENTOUT	RTC_OUT, RTC_TAMP1, RTC_TS
3	PC14/OSC32_IN (PC14)	EVENTOUT	OSC32_IN
4	PC15/ OSC32_OUT (PC15)	EVENTOUT	OSC32_OUT
5	PH0/OSC_IN (PH0)	EVENTOUT	OSC_IN
6	PH1/OSC_OUT (PH1)	EVENTOUT	OSC_OUT
7	NRST	-	-
8	PC0	OTG_HS_ULPI_STP/ EVENTOUT	ADC123_IN10
9	PC1	ETH_MDC/ EVENTOUT	ADC123_IN11
10	PC2	SPI2_MISO / OTG_HS_ULPI_DIR / ETH_MII_TXD2 /I2S2ext_SD/ EVENTOUT	ADC123_IN12
11	PC3	SPI2_MOSI / I2S2_SD / OTG_HS_ULPI_NXT / ETH_MII_TX_CLK/ EVENTOUT	ADC123_IN13
12	VSSA	-	-
13	VDDA	-	-
14	PA0/WKUP (PA0)	USART2_CTS/ UART4_TX/ ETH_MII_CRS / TIM2_CH1_ETR/ TIM5_CH1 / TIM8_ETR/ EVENTOUT	ADC123_IN0/WKU
15	PA1	USART2_RTS / UART4_RX/ ETH_RMII_REF_CLK / ETH_MII_RX_CLK / TIM5_CH2 / TIM2_CH2/ EVENTOUT	ADC123_IN1
16	PA2	USART2_TX/TIM5_CH3 / TIM9_CH1 / TIM2_CH3 / ETH_MDIO/ EVENTOUT	ADC123_IN2
17	PA3	USART2_RX/TIM5_CH4 / TIM9_CH2 / TIM2_CH4 / OTG_HS_ULPI_D0 / ETH_MII_COL/ EVENTOUT	ADC123_IN3
18	VSS	-	-
19	VDD	-	-
20	PA4	SPI1_NSS / SPI3_NSS / USART2_CK / DCMI_HSYNC / OTG_HS_SOF/ I2S3_WS/ EVENTOUT	ADC12_IN4 /DAC_OUT1
21	PA5	SPI1_SCK/ OTG_HS_ULPI_CK / TIM2_CH1_ETR/ TIM8_CH1N/ EVENTOUT	ADC12_IN5/DAC_ OUT2
22	PA6	SPI1_MISO / TIM8_BKIN/TIM13_CH1 / DCMI_PIXCLK / TIM3_CH1 / TIM1_BKIN/ EVENTOUT	ADC12_IN6
23	PA7	SPI1_MOSI/ TIM8_CH1N / TIM14_CH1/TIM3_CH2/ ETH_MII_RX_DV / TIM1_CH1N / ETH_RMII_CRS_DV/ EVENTOUT	ADC12_IN7
24	PC4	ETH_RMII_RX_D0 / ETH_MII_RX_D0/ EVENTOUT	ADC12_IN14
25	PC5	ETH_RMII_RX_D1 / ETH_MII_RX_D1/ EVENTOUT	ADC12_IN15
26	PB0	TIM3_CH3 / TIM8_CH2N/ OTG_HS_ULPI_D1/ ETH_MII_RXD2 / TIM1_CH2N/ EVENTOUT	ADC12_IN8
27	PB1	TIM3_CH4 / TIM8_CH3N/ OTG_HS_ULPI_D2/ ETH_MII_RXD3 / TIM1_CH3N/ EVENTOUT	ADC12_IN9
28	PB2/BOOT1	EVENTOUT	-
29	PB10	SPI2_SCK / I2S2_CK / I2C2_SCL/ USART3_TX / OTG_HS_ULPI_D3 / ETH_MII_RX_ER / TIM2_CH3/ EVENTOUT	-
30	PB11	I2C2_SDA/USART3_RX/ OTG_HS_ULPI_D4 / ETH_RMII_TX_EN/ ETH_MII_TX_EN / TIM2_CH4/ EVENTOUT	-
31	VCAP_1	-	-
32	VDD	-	-
33	PB12	SPI2_NSS / I2S2_WS / I2C2_SMBA/ USART3_CK/ TIM1_BKIN / CAN2_RX / OTG_HS_ULPI_D5/ ETH_RMII_TXD0 / ETH_MII_TXD0/ OTG_HS_ID/ EVENTOUT	-
34	PB13	SPI2_SCK / I2S2_CK / USART3_CTS/ TIM1_CH1N /CAN2_TX / OTG_HS_ULPI_D6 / ETH_RMII_TXD1 / ETH_MII_TXD1/ EVENTOUT	OTG_HS_VBUS
35	PB14	SPI2_MISO/ TIM1_CH2N / TIM12_CH1 / OTG_HS_DM/ USART3_RTS / TIM8_CH2N/I2S2ext_SD/ EVENTOUT	-
36	PB15	SPI2_MOSI / I2S2_SD/ TIM1_CH3N / TIM8_CH3N / TIM12_CH2 / OTG_HS_DP/ EVENTOUT	RTC_REFIN
37	PC6	I2S2_MCK / TIM8_CH1/SDIO_D6 / USART6_TX / DCMI_D0/TIM3_CH1/ EVENTOUT	-
38	PC7	I2S3_MCK / TIM8_CH2/SDIO_D7 / USART6_RX / DCMI_D1/TIM3_CH2/ EVENTOUT	-
39	PC8	TIM8_CH3/SDIO_D0 /TIM3_CH3/ USART6_CK / DCMI_D2/ EVENTOUT	-
40	PC9	I2S_CKIN/ MCO2 / TIM8_CH4/SDIO_D1 / /I2C3_SDA / DCMI_D3 / TIM3_CH4/ EVENTOUT	-
41	PA8	MCO1 / USART1_CK/ TIM1_CH1/ I2C3_SCL/ OTG_FS_SOF/ EVENTOUT	-
42	PA9	USART1_TX/ TIM1_CH2 / I2C3_SMBA / DCMI_D0/ EVENTOUT	OTG_FS_VBUS
43	PA10	USART1_RX/ TIM1_CH3/ OTG_FS_ID/DCMI_D1/ EVENTOUT	-
44	PA10	USART1_CTS / CAN1_RX / TIM1_CH4 / OTG_FS_DM/ EVENTOUT	-
45	PA12	USART1_RTS / CAN1_TX/ TIM1_ETR/ OTG_FS_DP/ EVENTOUT	-
46	PA13	JTMS-SWDIO/ EVENTOUT	-
47	VCAP_2	-	-
48	VDD	-	-
49	PA14	JTCK-SWCLK/ EVENTOUT	-
50	PA15	JTDI/ SPI3_NSS/ I2S3_WS/TIM2_CH1_ETR / SPI1_NSS / EVENTOUT	-
51	PC10	SPI3_SCK / I2S3_CK/ UART4_TX/SDIO_D2 / DCMI_D8 / USART3_TX/ EVENTOUT	-
52	PC11	UART4_RX/ SPI3_MISO / SDIO_D3 / DCMI_D4/USART3_RX / I2S3ext_SD/ EVENTOUT	-
53	PC12	UART5_TX/SDIO_CK / DCMI_D9 / SPI3_MOSI /I2S3_SD / USART3_CK/ EVENTOUT	-
54	PD2	TIM3_ETR/UART5_RX/ SDIO_CMD / DCMI_D11/ EVENTOUT	-
55	PB3	JTDO/ TRACESWO/ SPI3_SCK / I2S3_CK / TIM2_CH2 / SPI1_SCK/ EVENTOUT	-
56	PB4	NJTRST/ SPI3_MISO / TIM3_CH1 / SPI1_MISO / I2S3ext_SD/ EVENTOUT	-
57	PB5	I2C1_SMBA/ CAN2_RX / OTG_HS_ULPI_D7 / ETH_PPS_OUT/TIM3_CH2 / SPI1_MOSI/ SPI3_MOSI / DCMI_D10 / I2S3_SD/ EVENTOUT	-
58	PB6	I2C1_SCL/ TIM4_CH1 / CAN2_TX / DCMI_D5/USART1_TX/ EVENTOUT	-
59	PB7	I2C1_SDA / FSMC_NL / DCMI_VSYNC / USART1_RX/ TIM4_CH2/ EVENTOUT	-
60	BOOT0	-	VPP
61	PB8	TIM4_CH3/SDIO_D4/ TIM10_CH1 / DCMI_D6 / ETH_MII_TXD3 / I2C1_SCL/ CAN1_RX/ EVENTOUT
62	PB9	SPI2_NSS/ I2S2_WS / TIM4_CH4/ TIM11_CH1/ SDIO_D5 / DCMI_D7 / I2C1_SDA / CAN1_TX/ EVENTOUT	-
63	VSS	-	-
64	VDD	-	-

Features and Specifications

Arm 32-bit Cortex-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator)
Max Operating Voltage 1.8 - 3.6V
Up to 1 Mbyte of Flash memory with Up to 192+4 Kbytes of SRAM
LCD parallel interface, 8080/6800 modes
Serial wire debug (SWD) & JTAG
4-to-26 MHz crystal oscillator
Internal 16 MHz factory-trimmed RC (1% accuracy)
32 kHz oscillator for RTC with calibration
3×12-bit, 2.4 MSPS A/D converters: up to 24 channels
2×12-bit D/A converters
General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
USB 2.0 full-speed device/host/OTG controller with on-chip PHY
10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII
True random number generator
CRC calculation unit
96-bit unique ID
Junction temperature: –40 to + 125 °C

Note: Complete technical information can be found in the STM32F405 Datasheet, given at the bottom of this page.

Other STM32 ICS

STM32F030C6, STM32F030C8, STM32F030CC, STM32F103C8T6, STM32 Nucleo

How to Use the STM32F405 IC

The STM32F405 series microcontrollers are some of the most popular microcontrollers out there and can be used in a wide variety of applications. Other than that, the forum of STMicroelectronics is very huge and full of resources. This family of microcontrollers from STMicroelectronics is based on the ARM Cortex-M 32-bit processor core. The STM32 microcontrollers offer a large number of serial and parallel communication peripherals that can be used to interface with different electronic devices like sensors, displays, cameras, motors, etc. All STM32 variants come with internal Flash memory and RAM.

As it's a very popular microcontroller, development tools are pretty easy to get, though there are many development tools available, the most popular ones are ICSP, JTAG, and SWD.

STM32 Microcontroller Block Diagram

In terms of software tools compilers and debuggers, there are a few but the most popular ones are Keil MDK ARM (uVison5 IDE) and CoIDE that can be used to write and compile the code. Once the code and compilation is done Keil U-Link 2, Segger J-Link, or ST-Link programmers can be used to upload the code to the microcontroller