Name	Euse M3 DEMO
Part	Unknown
Brand	Euse
Origin	China

Part	STM32F103ZET6
Manufacturer	ST-Microelectronics
Core	Arm Cortex-M3
Max. Clock Speed	72MHz
Package	LQFP 144 pins

FLASH	512KiB
SRAM	64KiB

HSI	8MHz
LSI	40kHz
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	No
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)	65mm x 103mm
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.

• 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	PF11
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	POW
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, 32x2, 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	E1	-	PE1
8	E2	-	PE2
9	E0	-	PE0
10	B5	-	PB5
11	B4	-	PB4
12	B3	-	PB3
13	G15	-	PG15
14	G12	-	PG12
15	D7	-	PD7
16	D6	-	PD6
17	D5	-	PD5
18	D4	-	PD4
19	D3	-	PD3
20	D2	-	PD2
21	D1	-	PD1
22	D0	-	PD0
23	C12	-	PC12
24	C11	-	PC11
25	C10	-	PC10
26	A15	-	PA15
27	A14	-	PA14
28	A13	-	PA13
29	A12	-	PA12
30	A11	-	PA11
31	3.3V	-	+3.3V rail
32	GND	-	Ground plane
33	C9	-	PC9
34	C8	-	PC8
35	G7	-	PG7
36	G6	-	PG6
37	G5	-	PG5
38	G4	-	PG4
39	G3	-	PG3
40	G2	-	PG2
41	D15	-	PD15
42	D14	-	PD14
43	D13	-	PD13
44	D12	-	PD12
45	D11	-	PD11
46	D10	-	PD10
47	D9	-	PD9
48	D8	-	PD8
49	B15	-	PB15
50	B14	-	PB14
51	B13	-	PB13
52	B12	-	PB12
53	E15	-	PE15
54	E14	-	PE14
55	E13	-	PE13
56	E12	-	PE12
57	GND	-	Ground plane
58	B8	-	PB8
59	B10	-	PB10
60	B9	-	PB9
61	B11	-	PB11
62	C6	-	PC6
63	5V	-	+5V rail
64	C7	-	PC7

Name	Unknown
Reference	J6
Type	Pin header (2.54mm, 32x2, male)

#	Name	Function	Connected to
1	A8	-	PA8
2	A6	-	PA6
3	A7	-	PA7
4	A5	-	PA5
5	G13	-	PG13
6	G14	-	PG14
7	3.3V	-	+3.3V rail
8	GND	-	Ground plane
9	C13	-	PC13
10	C14	-	PC14
11	C15	-	PC15
12	F0	-	PF0
13	F1	-	PF1
14	F2	-	PF2
15	F3	-	PF3
16	F4	-	PF4
17	F5	-	PF5
18	F6	-	PF6
19	F7	-	PF7
20	F8	-	PF8
21	F9	-	PF9
22	F10	-	PF10
23	C0	-	PC0
24	C1	-	PC1
25	C2	-	PC2
26	C3	-	PC3
27	B6	-	PB6
28	E4	-	PE4
29	B7	-	PB7
30	E5	-	PE5
31	E3	-	PE3
32	E6	-	PE6
33	3.3V	-	+3.3V rail
34	GND	-	Ground plane
35	A0	-	PA0
36	A1	-	PA1
37	A2	-	PA2
38	A3	-	PA3
39	A4	-	PA4
40	C4	-	PC4
41	C5	-	PC5
42	B0	-	PB0
43	B1	-	PB1
44	B2	-	PB2
45	F11	-	PF11
46	F12	-	PF12
47	F13	-	PF13
48	F14	-	PF14
49	F15	-	PF15
50	G0	-	PG0
51	G1	-	PG1
52	E7	-	PE7
53	E8	-	PE8
54	E9	-	PE9
55	E10	-	PE10
56	E11	-	PE11
57	G8	-	PG8
58	G10	-	PG10
59	G9	-	PG9
60	G11	-	PG11
61	3.3V	-	+3.3V rail
62	GND	-	Ground plane
63	5V	-	+5V rail
64	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	G12	-	PG12
2	G0	-	PG0
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	F8	-	PF8
30	F9	-	PF9
31	F10	-	PF10
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