STM32-base

Green board

STM32F103C8T6

Board

NameGreen board
PartUnknown
BrandUnknown
OriginChina

Microcontroller

PartSTM32F103C8T6
ManufacturerST-Microelectronics
CoreArm Cortex-M3
Max. Clock Speed72MHz
PackageLQFP 48 pins

Internal memories

FLASH64KiB
SRAM20KiB

Oscillators

HSI8MHz
LSI40kHz
HSE8MHz
LSE32.768kHz

Power

Sources
Any +3.3V pin (+3.3V)
Any +5V pin (+5V)
USB connector (+5V)
5V IN connector (+5V)
VDDA pinNo
VSSA pinNo
VREF- pinNo
VREF+ pinNo
Backup batteryHolder (12.5mm / 12)

Regulator

ManufacturerTorex Semiconductor LTD.
PartXC6204 (4A2D / 4B2X)
PackageSOT89-3 3 pins
Input+3.6V to +10V
Output+3.3V @ 300mA
DatasheetXC6204-XC6205.pdf

PCB

ColorGreen
Size (w x l)60mm x 70mm
Mounting4x mounting hole (M3)

Remarks

  • 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.

Pictures

Green board: Perspective view
Green board: Perspective view
Green board: Top view
Green board: Top view
Green board: Bottom view
Green board: Bottom view

Resources

Inputs

Outputs

Connectors

Devices

None

Inputs & outputs

BOOT0 jumper

Name BOOT0
Reference -
Type 1-way jumper
Connected to BOOT0
Mode Active high

User button

Name KEY
Reference -
Type Button
Connected to PB2
Mode Active low

Power source switch

Name -
Reference -
Type Switch
Connected to +5V USB and 5V IN connector
Mode N.A.

Power LED

Name -
Reference -
Type LED
Connected to +5V rail
Mode N.A.

User LED 1

Name LED1
Reference -
Type LED
Connected to PB0
Mode Source

User LED 2

Name LED2
Reference -
Type LED
Connected to PB1
Mode Source

Connectors & headers

Header 1 properties

Name Unknown
Reference None
Type Pin header (2.54mm, 12x2, male)

Header 1 pins

# Name Function Connected to
1 5V - +5V rail
2 3V3 - +3.3V rail
3 NC - N.C.
4 GND - Ground plane
5 GND - Ground plane
6 CANRX PB8 - PB8
7 GND - Ground plane
8 CANTX PB9 - PB9
9 GND - Ground plane
10 IIC_SCL PB10 - PB10
11 5V - +5V rail
12 IIC_SDA PB11 - PB11
13 NC - N.C.
14 SPI_CS PB12 - PB12
15 GND - Ground plane
16 PI_CLK PB13 - PB13
17 GND - Ground plane
18 SPI_MISO PB14 - PB14
19 GND - Ground plane
20 SPI_MOSI PB15 - PB15
21 NC - N.C.
22 GND - Ground plane
23 5V - +5V rail
24 3V3 - +3.3V rail

Header 2 properties

Name Unknown
Reference None
Type Pin header (2.54mm, 12x2, male)

Header 2 pins

# Name Function Connected to
1 3V3 - +3.3V rail
2 GND - Ground plane
3 GND - Ground plane
4 GND - Ground plane
5 PB0 - PB0
6 GND - Ground plane
7 PB1 - PB1
8 NC - N.C.
9 PB2 - PB2
10 NC - N.C.
11 PB3 - PB3
12 NC - N.C.
13 PB4 - PB4
14 GND - Ground plane
15 PB5 - PB5
16 GND - Ground plane
17 PB6 IIC_SCL - PB6
18 GND - Ground plane
19 PB7 IIC_SDA - PB7
20 NC - N.C.
21 GND - Ground plane
22 NC - N.C.
23 3V3 - +3.3V rail
24 5V - +5V rail

Header 3 properties

Name Unknown
Reference None
Type Pin header (2.54mm, 12x2, male)

Header 3 pins

# Name Function Connected to
1 PA0 - PA0
2 PA4 SPI_CS - PA4
3 PA1 - PA1
4 PA5 SPI_CLK - PA5
5 PA2 - PA2
6 PA6 SPI_MISO - PA6
7 PA3 - PA3
8 PA7 SPI_MOSI - PA7
9 GND - Ground plane
10 GND - Ground plane
11 3V3 - +3.3V rail
12 3V3 - +3.3V rail
13 GND - Ground plane
14 GND - Ground plane
15 PA8 - PA8
16 PA9 TXD - PA9
17 PA15 - PA15
18 PA10 RXD - PA10
19 GND - Ground plane
20 GND - Ground plane
21 5V - +5V rail
22 5V - +5V rail
23 NC - N.C.
24 NC - N.C.

USB connector properties

Name USB
Reference None
Type USB Micro

USB connector pins

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

SWD connector properties

Name SWD
Reference None
Type Pin header (2.54mm, 4x1, male)

SWD connector pins

# Name Function Connected to
1 DIO SWDIO PA13
2 CLK SWCLK PA14
3 GND GND Ground plane
4 3V3 VCC +3.3V rail

Power connector properties

Name 5V IN
Reference None
Type Pin header (2.54mm, 2x1, male)

Power connector pins

# Name Function Connected to
1 - - Ground plane
2 + - +5V rail