Hardware

This is where I put information about the hardware

Image overview

TODO: Do an ifixit/adafruit style highlighted picture

Pins by Package Number

UQFPN-28 Number	Pin Name	SPROCKET USE	PWM	ADC
1	PC14-OSC32_IN	BUTTON1	No	No
2	PC15-OSC32_OUT	BUTTON2	No	No
3	VDD/VDDA	Supply	No	No
4	VSS/VSSA	Supply	No	No
5	PF2-NRST	SWD	No	No
6	PA0	LED1	Yes	ADC0
7	PA1	GPIO1	Yes	ADC1
8	PA2	UART-TX	Yes	ADC2
9	PA3	UART-RX	Yes	ADC3
10	PA4	SmartLED (SPI2_MOSI)	Yes	ADC4
11	PA5	GPIO2	Yes	ADC5
12	PA6	GPIO3	Yes	ADC6
13	PA7	GPIO4	Yes	ADC7
14	PB0	GPIO5	Yes	ADC8
15	PB1	GPIO6	Yes	ADC9
16	PA8	GPIO7	Yes	No
17	PC6	GPIO	Yes	No
18	PA11/PA9	I2C2-SCL	Yes	ADC15
19	PA12/PA10	I2C2-SDA	Maybe?	ADC16
20	PA13	SWDIO	No	ADC17
21	PA14-BOOT0	SWCLK	Maybe?	ADC18
22	PA15	SPI-CSn	Maybe?	No
23	PB3	SPI-SCK	Yes	No
24	PB4	SPI-CIPO	Yes	No
25	PB5	SPI-COPI	Yes	No
26	PB6	I2C1-SCL	Yes	No
27	PB7	I2C1-SDA	Maybe?	ADC11
28	PB8	LED2	Yes	No

Complete Pinout Table

PIN Number	Pin Name	PIN TYPE	IO Capabilities	NOTES	SPROCKET USE	ALT FUNCS	ADD'L FUNC
1	PC14-OSC32_IN	I/O	FT	1, 2	BUTTON1	TIM1_BK2	OSC32_IN, OSC_IN
2	PC15-OSC32_OUT	I/O	FT	1, 2	BUTTON2	OSC32_EN, OSC_EN	OSC32_OUT
3	VDD/VDDA	S			Supply
4	VSS/VSSA	S			Supply
5	PF2-NRST	I/O	-	-	SWD	MCO	NRST
6	PA0	I/O	FT_a	-	LED1	SPI2_SCK, USART2_CTS, TIM2_CH1_ETR, LPTIM1_OUT	ADC_IN0, TAMP_IN2, WKUP1
7	PA1	I/O	FT_ea	-	GPIO1	SPI1_SCK, I2S1_CK, USART2_RTS_DE_CK, TIM2_CH2, I2C1_SMBA, EVENTOUT	ADC_IN1
8	PA2	I/O	FT_a	-	UART-TX	SPI1_MOSI, I2S1_SD, USART2_TX, TIM2_CH3, LPUART1_TX	ADC_IN2, WKUP4, LSCO
9	PA3	I/O	FT_ea	-	UART-RX	SPI2_MISO, USART2_RX, TIM2_CH4, LPUART1_RX, EVENTOUT	ADC_IN3
10	PA4	I/O	FT_a	-	SmartLED (SPI2_MOSI)	SPI1_NSS, I2S1_WS, SPI2_MOSI, TIM14_CH1, LPTIM2_OUT, EVENTOUT	ADC_IN4, TAMP_IN1, RTC_TS, RTC_OUT1, WKUP2
11	PA5	I/O	FT_ea	-	GPIO2	SPI1_SCK, I2S1_CK, TIM2_CH1_ETR, LPTIM2_ETR, EVENTOUT	ADC_IN5
12	PA6	I/O	FT_ea	-	GPIO3	SPI1_MISO, I2S1_MCK, TIM3_CH1, TIM1_BK, TIM16_CH1, LPUART1_CTS	ADC_IN6
13	PA7	I/O	FT_a	-	GPIO4	SPI1_MOSI, I2S1_SD, TIM3_CH2, TIM1_CH1N, TIM14_CH1, TIM17_CH1	ADC_IN7
14	PB0	I/O	FT_ea	-	GPIO5	SPI1_NSS, I2S1_WS, TIM3_CH3, TIM1_CH2N, LPTIM1_OUT	ADC_IN8
15	PB1	I/O	FT_ea	-	GPIO6	TIM14_CH1, TIM3_CH4, TIM1_CH3N, LPTIM2_IN1, LPUART1_RTS_DE, EVENTOUT	ADC_IN9
16	PA8	I/O	FT	-	GPIO7	MCO, SPI2_NSS, TIM1_CH1, LPTIM2_OUT, EVENTOUT	-
17	PC6	I/O	FT	-	GPIO	TIM3_CH1, TIM2_CH3	-
18	PA11/PA9	I/O	FT_fa	3	I2C2-SCL	SPI1_MISO, I2S1_MCK, USART1_CTS, TIM1_CH4, TIM1_BK2, I2C2_SCL	ADC_IN15
19	PA12/PA10	I/O	FT_fa	3	I2C2-SDA	SPI1_MOSI, I2S1_SD, USART1_RTS_DE_CK, TIM1_ETR, I2S_CKIN, I2C2_SDA	ADC_IN16
20	PA13	I/O	FT_ea	4	SWDIO	SWDIO, IR_OUT, EVENTOUT	ADC_IN17
21	PA14-BOOT0	I/O	FT_a	4	SWCLK	SWCLK, USART2_TX, EVENTOUT	ADC_IN18, BOOT0
22	PA15	I/O	FT	-	SPI-CSn	SPI1_NSS, I2S1_WS, USART2_RX, TIM2_CH1_ETR, EVENTOUT	-
23	PB3	I/O	FT	-	SPI-SCK	SPI1_SCK, I2S1_CK, TIM1_CH2, TIM2_CH2, USART1_RTS_DE_CK, EVENTOUT	-
24	PB4	I/O	FT	-	SPI-CIPO	SPI1_MISO, I2S1_MCK, TIM3_CH1, USART1_CTS, TIM17_BK, EVENTOUT	-
25	PB5	I/O	FT	-	SPI-COPI	SPI1_MOSI, I2S1_SD, TIM3_CH2, TIM16_BK, LPTIM1_IN1, I2C1_SMBA	WKP6
26	PB6	I/O	FT_f	-	I2C1-SCL	USART1_TX, TIM1_CH3, TIM16_CH1N, SPI2_MISO, LPTIM1_ETR, I2C1_SCL, EVENTOUT	-
27	PB7	I/O	FT_fa	-	I2C1-SDA	USART1_RX, SPI2_MOSI, TIM17_CH1N, LPTIM1_IN2, I2C1_SDA, EVENTOUT	ADC_IN11, PVD_IN
28	PB8	I/O	FT_f	-	LED2	SPI2_SCK, TIM16_CH1, I2C1_SCL, EVENTOUT	-

NOTES	Meaning
1	<= 2MHz, max load 30pF, only sinks 3mA (collectively?)
2	RTC domain relevant, see RM0444
3	pins are remappable to swap between IOs using SYSCFG_CFGR1
4	SWD on reset, PA13 Pull-Up, PA14 Pull-down internally
FT	5V tolerant I/O
_f	Fm+ capable
_a	analog switch function
_e	switchable diode to Vdd
PVD	Programmable Voltage Detector
MCO	Microcontroller Clock Output
LSCO	Low Speed Clock Output

Board Pinout

		Col 1	Col 2		Col 3		Col 4	Col 5
Row 1		GPIO1	GPIO5		SWDIO		COPI	CSn
Row 2		GPIO2	GPIO6		GND		SCK	CIPO
Row 3		GPIO3	GPIO7		SWCLK		SDA	SCL
Row 4		GPIO4	GPIO8		3v3		3v3	5v0
Row 5		GND	GND		NRST		GND	GND
Row 6		3v3	5v0		5v0+		RX	TX

"5v0" pins are post-protection diode. "5v0+" are pre-protection diode.