STM32 SD

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Name	Pin on SD	F4xx	Description
DAT3	1	PA8	Serial Data 3
CMD	2	PA6	Command
GND	3	N/C	Not connected/used on micro-SD
VCC	4	3.3V	Power supply
CLK	5	PB15	Clock
GND	6	GND	Ground
DAT0	7	PB4	Serial Data 0
DAT1	8	PA8	Serial Data 1
DAT2	9	PA9	Serial Data 2

Black Pill

Name	Pin on SD	STM32F411
DAT3	1	PA8

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