STM32F103C8T6 - Green Board

Green Board

Overview

Board Name Green Board
Brand Unknown
Origin AliExpress, China
Microcontroller Part STM32F103C8T6
Package LQFP48
Core Cortex-M3
FLASH 64KB
SRAM 20KB
Max. Clock Speed 72MHz
Crystals HSE (High Speed External) 8MHz
LSE (Low Speed External) 32.768kHz
Power Sources Any +3.3V pin (+3.3V)
Any +5V pin (+5V)
USB connector (+5V)
Regulator manufacturer Torex Semiconductior
Regulator part number XC6204 (4A2D)
Regulator package SOT89
Output +3.3V @ 150mA
Battery holder Yes
Connectivity Headers 3x 2x12 male dupont (2.54mm)
Specific Power (1x2 male dupont (2.54mm))
Debug SWD (1x4 male dupont (2.54mm))
USB Micro
I/O LEDs Power LED (+5V)
User LED (LED1, PB0, source)
User LED (LED2, PB1, source)
Buttons, switches and jumpers 1-way jumper (BOOT0, BOOT0, active high)
User button (KEY, PB2, active low)
2-way switch (+5V from USB / +5V IN)
Other devices None
PCB Colour Green
Size 70mm x 60mm
Mounting 4x mounting hole (M3)
Remarks
  • Note: This board features a switch which is used to select the +5V source. Either +5V from USB or +5V from the 5V IN pin.

Pictures

Green Board

Green Board Top view

Green Board Bottom view

Header 1

Pin Connected to
GND Ground plane
3V3 +3.3V rail
GND Ground plane
GND Ground plane
GND Ground plane
PB0 PB0
NC N.C.
PB1 PB1
NC N.C.
PB2 PB2
NC N.C.
PB3 PB3
GND Ground plane
PB4 PB4
GND Ground plane
PB5 PB5
GND Ground plane
PB6 PB6
NC N.C.
PB7 PB7
NC N.C.
GND Ground plane
5V +5V rail
3V3 +3.3V rail

Header 2

Pin Connected to
5V +5V rail
3V3 +3.3V rail
NC N.C.
GND Ground plane
GND Ground plane
PB15 PB15
GND Ground plane
PB14 PB14
GND Ground plane
PB13 PB13
NC N.C.
PB12 PB12
5V +5V rail
PB11 PB11
GND Ground plane
PB10 PB10
GND Ground plane
PB9 PB9
GND Ground plane
PB8 PB8
NC N.C.
GND Ground plane
5V +5V rail
3V3 +3.3V rail

Header 3

The left main header as seen on the top view. Pins listed in a clock-wise order, alternating the outer pin with the inner pin.

Pin Connected to
NC N.C.
NC N.C.
5V +5V rail
5V +5V rail
GND Ground plane
GND Ground plane
PA15 PA15
PA10 PA10
PA8 PA8
PA9 PA9
GND Ground plane
GND Ground plane
3V3 +3.3V rail
3V3 +3.3V rail
GND Ground plane
GND Ground plane
PA3 PA3
PA7 PA7
PA2 PA2
PA6 PA6
PA1 PA1
PA5 PA5
PA0 PA0
PA4 PA4

USB

Pin Connected to
VCC +5V rail
D- PA11
D+ PA12
ID N.C.
GND Ground plane

SWD

Pin Connected to
3V3 +3.3V rail
GND Ground plane
CLK PA14
DIO PA13

Power

Pin Connected to
- Ground plane
+ +5V rail