Name	Euse M4 DEMO
Part	EU-STM32F407VET6-DEMO
Brand	Euse
Origin	China

Part	STM32F407VET6
Manufacturer	ST-Microelectronics
Core	Arm Cortex-M4
Max. Clock Speed	168MHz
Package	LQFP 100 pins

FLASH	512KiB
SRAM	192KiB
Backup SRAM	4KiB

HSI	16MHz
LSI	32kHz
HSE	8MHz
LSE	32.768kHz

Sources	Any +3.3V pin (+3.3V) Any +5V pin (+5V) USB connector (+5V)
VDDA pin	No
VSSA pin	No
VREF- pin	No
VREF+ pin	Yes
Backup battery	Holder (12.5mm / 12)

Manufacturer	Holtek Semiconductor Inc.
Part	HT7833 (HT7833)
Package	SOT89-3 3 pins
Input	+4.3V to +8.5V
Output	+3.3V @ 500mA
Datasheet	HT78xx.pdf

Color	Black
Size (w x l)	69mm x 101mm
Mounting	4x mounting hole (M2)

• Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.
• Warning: The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional pull-up resistor on D+. This resistor is not needed and violates the USB specification when the internal pull-up resistors are also used. This may cause errors while using USB on this board.

• Perspective view
• Top view
• Bottom view

Name	RESET
Reference	-
Type	Button
Connected to	NRST
Mode	Active low

Name	BT0
Reference	-
Type	2-way jumper
Connected to	BOOT0
Mode	N.A.

Name	BT1
Reference	-
Type	2-way jumper
Connected to	PB2
Mode	N.A.

Name	BOOT0 SET1
Reference	-
Type	Button
Connected to	BOOT0
Mode	Active high

Name	KEY1
Reference	-
Type	Button
Connected to	PA0
Mode	Active high

Name	KEY2
Reference	-
Type	Button
Connected to	PC1
Mode	Active high

Name	-
Reference	-
Type	Solder bridge
Connected to	Display header NC pin
Mode	N.A.

• Info: Connects the Display NC pin to either +5V, +3.3V or ground.

Name	Power
Reference	-
Type	LED
Connected to	+3.3V rail
Mode	N.A.

Name	LED1
Reference	-
Type	LED
Connected to	PC0
Mode	Sink

Name	LED2
Reference	-
Type	LED
Connected to	PD3
Mode	Sink

Name	Unknown
Reference	J7
Type	Pin header (2.54mm, 24x2, male)

#	Name	Function	Connected to
1	3.3V	-	+3.3V rail
2	GND	-	Ground plane
3	A9	-	PA9
4	A10	-	PA10
5	3.3V	-	+3.3V rail
6	GND	-	Ground plane
7	3.3V	-	+3.3V rail
8	GND	-	Ground plane
9	C11	-	PC11
10	VREF+	-	VREF+
11	C12	-	PC12
12	D13	-	PD13
13	C13	-	PC13
14	D14	-	PD14
15	C14	-	PC14
16	D15	-	PD15
17	C15	-	PC15
18	E0	-	PE0
19	D0	-	PD0
20	E1	-	PE1
21	D1	-	PD1
22	E2	-	PE2
23	D2	-	PD2
24	E7	-	PE7
25	D3	-	PD3
26	E8	-	PE8
27	D4	-	PD4
28	E9	-	PE9
29	D5	-	PD5
30	E10	-	PE10
31	D6	-	PD6
32	E11	-	PE11
33	D7	-	PD7
34	E12	-	PE12
35	D8	-	PD8
36	E13	-	PE13
37	D9	-	PD9
38	E14	-	PE14
39	D10	-	PD10
40	E15	-	PE15
41	GND	-	Ground plane
42	B8	-	PB8
43	B10	-	PB10
44	B9	-	PB9
45	B11	-	PB11
46	C6	-	PC6
47	5V	-	+5V rail
48	C7	-	PC7

Name	Unknown
Reference	J6
Type	Pin header (2.54mm, 24x2, male)

#	Name	Function	Connected to
1	A8	-	PA8
2	A6	-	PA6
3	A7	-	PA7
4	A5	-	PA5
5	D11	-	PD11
6	D12	-	PD12
7	3.3V	-	+3.3V rail
8	GND	-	Ground plane
9	A0	-	PA0
10	B12	-	PB12
11	A1	-	PA1
12	B13	-	PB13
13	A2	-	PA2
14	B14	-	PB14
15	A3	-	PA3
16	B15	-	PB15
17	A11	-	PA11
18	C0	-	PC0
19	A12	-	PA12
20	C1	-	PC1
21	B6	-	PB6
22	E4	-	PE4
23	B7	-	PB7
24	E5	-	PE5
25	E3	-	PE3
26	E6	-	PE6
27	3.3V	-	+3.3V rail
28	GND	-	Ground plane
29	A13	-	PA13
30	C2	-	PC2
31	A14	-	PA14
32	C3	-	PC3
33	B0	-	PB0
34	C5	-	PC5
35	B1	-	PB1
36	C8	-	PC8
37	B2	-	PB2
38	C9	-	PC9
39	B4	-	PB4
40	C10	-	PC10
41	A4	-	PA4
42	B3	-	PB3
43	A15	-	PA15
44	B5	-	PB5
45	3.3V	-	+3.3V rail
46	C4	-	PC4
47	5V	-	+5V rail
48	GND	-	Ground plane

Name	USB
Reference	None
Type	USB Micro

#	Name	Function	Connected to
1	-	VCC	+5V rail
2	-	D-	PA11
3	-	D+	PA12
4	-	ID	N.C.
5	-	GND	Ground plane

Name	Unknown
Reference	None
Type	Pin header (2.54mm, 4x1, female)

#	Name	Function	Connected to
1	3.3V	VCC	+3.3V rail
2	SWDIO	SWDIO	PA13
3	SWCLK	SWCLK	PA14
4	GND	GND	Ground plane

Name	Unknown
Reference	None
Type	IDC (2.54mm, 10x2, male)

#	Name	Function	Connected to
1	-	VCC	+3.3V rail
2	-	VCC	+3.3V rail
3	-	TRST	PB4
4	-	GND	Ground plane
5	-	TDI	PA15
6	-	GND	Ground plane
7	-	TMS / SWDIO	PA13
8	-	GND	Ground plane
9	-	TCLK / SWCLK	PA14
10	-	GND	Ground plane
11	-	RTCK	N.C.
12	-	GND	Ground plane
13	-	TDO / SWO	PB3
14	-	GND	Ground plane
15	-	RESET	NRST
16	-	GND	Ground plane
17	-	N.C.	N.C.
18	-	GND	Ground plane
19	-	N.C.	N.C.
20	-	GND	Ground plane

Name	mSD
Reference	None
Type	microSD

#	Name	Function	Connected to
1	-	DAT2	N.C.
2	-	CD/DAT3	PC11
3	-	CMD	PD2
4	-	VDD	+3.3V rail
5	-	CLK	PC12
6	-	VSS	Ground plane
7	-	DAT0	PC8
8	-	DAT1	N.C.
9	-	CD	N.C.
10	-	Body	Ground plane

Name	DIS
Reference	None
Type	Pin header (2.54mm, 17x2, female)

#	Name	Function	Connected to
1	D7	-	PD7
2	D13	-	PD13
3	D5	-	PD5
4	D4	-	PD4
5	C5	-	PC5
6	D14	-	PD14
7	D15	-	PD15
8	D0	-	PD0
9	D1	-	PD1
10	E7	-	PE7
11	E8	-	PE8
12	E9	-	PE9
13	E10	-	PE10
14	E11	-	PE11
15	E12	-	PE12
16	E13	-	PE13
17	E14	-	PE14
18	E15	-	PE15
19	D8	-	PD8
20	D9	-	PD9
21	D10	-	PD10
22	C2	-	PC2
23	B0	-	PB0
24	3.3V	-	+3.3V rail
25	3.3V	-	+3.3V rail
26	GND	-	Ground plane
27	GND	-	Ground plane
28	NC	-	N.C.
29	E0	-	PE0
30	E1	-	PE1
31	E2	-	PE2
32	C3	-	PC3
33	B2	-	PB2
34	B1	-	PB1

Name	EEPROM
Reference	Unknown
Manufacturer	Unknown
Part	Generic EEPROM
Marking	Unknown
Datasheet	Unavailable
Package	SOP 8 pins
Description	Generic I2C EEPROM

#	Name	Function	Connected to
1	-	A0	Ground plane
2	-	A1	Ground plane
3	-	A2	Ground plane
4	-	GND	Ground plane
5	-	SDA	PB7
6	-	SCL	PB6
7	-	WP	Ground plane
8	-	VCC	+3.3V rail

Name	FLASH
Reference	Unknown
Manufacturer	Unknown
Part	Generic FLASH
Marking	Unknown
Datasheet	Unavailable
Package	SOIC 8 pins
Description	Generic Dual/Quad SPI FLASH

#	Name	Function	Connected to
1	-	CS	PB12
2	-	DO	PB14
3	-	WP	+3.3V rail
4	-	GND	Ground plane
5	-	DI	PB15
6	-	CLK	PB13
7	-	HOLD	+3.3V rail
8	-	VCC	+3.3V rail