STM32-base

Blue Header

STM32F103C8T6

Board

NameBlue Header
PartUnknown
BrandUnknown
OriginChina

Microcontroller

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

Internal memories

FLASH64KiB
SRAM20KiB

Oscillators

HSI8MHz
LSI40kHz
HSE25MHz
LSE32.768kHz

Power

Sources
Any +3.3V pin (+3.3V)
Any +5V pin (+5V)
USB connector (+5V)
VDDA pinNo
VSSA pinNo
VREF- pinNo
VREF+ pinNo
Backup batteryPin

Regulator

ManufacturerAdvanced Monolithic Systems Inc.
PartAMS1117 (AMS1117)
PackageSOT223 3 pins
Input+4.6V to +15V
Output+3.3V @ 1A
DatasheetAMS1117.pdf

PCB

ColorBlue
Size (w x l)34mm x 60mm
MountingNone

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

Blue Header: Perspective view
Blue Header: Perspective view
Blue Header: Top view
Blue Header: Top view
Blue Header: Bottom view
Blue Header: Bottom view

Resources

Inputs

Outputs

Connectors

Devices

None

Inputs & outputs

Reset button

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

BOOT0 jumper

Name -
Reference J6
Type 1-way jumper
Connected to BOOT0
Mode Active low

Power LED

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

User LED

Name LED
Reference -
Type LED
Connected to PB8
Mode Sink

Connectors & headers

Header 1 properties

Name Unknown
Reference J2
Type Pin header (2.54mm, 27x2, male)

Header 1 pins

# Name Function Connected to
1 PA1 - PA1
2 PA0 - PA0
3 PC15 - PC15
4 PC14 - PC14
5 PC13 - PC13
6 BAT - VBAT
7 PB7 - PB7
8 PB6 - PB6
9 PB5 - PB5
10 PB4 - PB4
11 PB3 - PB3
12 PB2 - PB2
13 PB1 - PB1
14 PB0 - PB0

Header 2 properties

Name Unknown
Reference J1
Type Pin header (2.54mm, 27x2, male)

Header 2 pins

# Name Function Connected to
1 PA2 - PA2
2 PA3 - PA3
3 PA4 - PA4
4 PA5 - PA5
5 PA6 - PA6
6 PA7 - PA7
7 PB8 - PB8
8 PB9 - PB9
9 PB10 - PB10
10 PB11 - PB11
11 PB12 - PB12
12 PB13 - PB13
13 PB14 - PB14
14 PB15 - PB15

Header 3 properties

Name Unknown
Reference J5
Type Pin header (2.54mm, 27x2, male)

Header 3 pins

# Name Function Connected to
1 PA8 - PA8
2 PA9 - PA9
3 PA10 - PA10
4 PA11 - PA11
5 PA12 - PA12
6 PA13 - PA13
7 PA14 - PA14
8 PA15 - PA15

USB connector properties

Name Unknown
Reference J10
Type USB Mini

USB connector pins

# Name Function Connected to
1 - VCC +5V rail
2 - D- PA11 via 220Ω resistor (R6)
3 - D+ PA12 via 220Ω resistor (R7)
4 - ID N.C.
5 - GND Ground plane

SWD header properties

Name Unknown
Reference J3
Type Pin header (2.54mm, 4x1, male)

SWD header pins

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

JTAG header properties

Name JTAG
Reference JP1
Type IDC (2.54mm, 10x2, male)

JTAG header pins

# 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

Serial header properties

Name Unknown
Reference J4
Type Pin header (2.54mm, 4x1, male)

Serial header pins

# Name Function Connected to
1 TXD - PA9
2 RXD - PA10
3 GND - Ground plane
4 +5V - +5V rail

Power header properties

Name Unknown
Reference None
Type Pin header (2.54mm, 3x2, male)

Power header pins

# Name Function Connected to
1 5V - +5V rail
2 5V - +5V rail
3 GND - Ground plane
4 GND - Ground plane
5 3V3 - +3.3V rail
6 3V3 - +3.3V rail