STM32F103C8T6 - Strange Thing

Strange Thing

Overview

Board Name Strange Thing
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 Advanced Monolithic Systems Inc.
Regulator part number AMS1117
Regulator package SOT223
Output +3.3V @ 1000mA
Battery holder No
Connectivity Headers 2x 2x8 male dupont (2.54mm)
1x 1x13 male dupont (2.54mm)
Specific None
Debug SWD (1x4 male dupont (2.54mm))
USB Micro
I/O LEDs Power LED (+3.3V)
User LED (PB0, sink)
Buttons, switches and jumpers Reset button (NRST, NRST, active low)
1-way jumper (BT0, BOOT0, active low)
1-way jumper (BT1, BOOT1, active low)
Other devices None
PCB Colour Black
Size 33mm x 34mm
Mounting None
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

Strange Thing

Strange Thing Top view

Strange Thing Bottom view

Header 1

Pin Connected to
A14 PA14
A15 PA15
A12 PA12
A13 PA13
A10 PA10
A11 PA11
A8 PA8
A9 PA9
A6 PA6
A7 PA7
A4 PA4
A5 PA5
A2 PA2
A3 PA3
A0 PA0
A1 PA1

Header 2

Pin Connected to
3.3 +3.3V rail
5V +5V rail
GND Ground plane
GND Ground plane
C13 PC13
C14 PC14
C15 PC15
RST NRST
BAT VBAT
3.3 +3.3V rail
5V +5V rail
GND Ground plane
GND Ground plane

Header 3

Pin Connected to
B14 PB14
B15 PB15
B12 PB12
B13 PB13
B10 PB10
B11 PB11
B8 PB8
B9 PB9
B6 PB6
B7 PB7
B4 PB4
B5 PB5
B2 PB2
B3 PB3
B0 PB0
B1 PB1

USB

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

SWD

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

Serial

Pin Connected to
GND Ground plane
TXD PA9
RXD PA10
+5V +5V rail