Boring_TECH Black Pill

STM32L433CCT6


Board

NameBoring_TECH Black Pill
PartUnknown
BrandBoring_TECH
OriginChina

Microcontroller

PartSTM32L433CCT6
ManufacturerST-Microelectronics
CoreArm Cortex-M4
Max. Clock Speed80MHz
PackageLQFP 48 pins

Internal memories

FLASH256KiB
SRAM64KiB

Oscillators

HSI16MHz
LSI32kHz
HSE8MHz
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 batteryPads

Regulator

ManufacturerUnknown
PartUnknown
PackageSOT23 3 pins
Input+3.6V to +5.5V
Output+3.3V @ 150mA
DatasheetUnavailable

PCB

ColorBlack
Size (w x l)25mm x 65mm
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

Boring_TECH Black Pill: Perspective view
Boring_TECH Black Pill: Perspective view
Boring_TECH Black Pill: Top view
Boring_TECH Black Pill: Top view
Boring_TECH Black Pill: Bottom view
Boring_TECH Black Pill: Bottom view

Inputs & outputs


Reset button

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

BOOT0 button

Name BOOT
Reference -
Type Button
Connected to BOOT0
Mode Active high

BOOT1 solder bridge

Name BOOT1
Reference 1
Type Solder bridge
Connected to PB2
Mode Active high

Power LED

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

User LED 1 (Red)

Name -
Reference -
Type LED
Connected to PA0
Mode Sink

User LED 2 (Green)

Name -
Reference -
Type LED
Connected to PA1
Mode Sink

User LED 3 (Blue)

Name -
Reference -
Type LED
Connected to PA2
Mode Sink

Connectors & headers


Header 1 properties

Name Unknown
Reference None
Type Pin header (2.54mm, 20x1, male)

Header 1 pins

# Name Function Connected to
1 C13 - PC13
2 B9 - PB9
3 B8 - PB8
4 B7 - PB7
5 B6 - PB6
6 B5 - PB5
7 B4 - PB4
8 B3 - PB3
9 A15 - PA15
10 A14 - PA14
11 A13 - PA13
12 A12 - PA12
13 A11 - PA11
14 A10 - PA10
15 A9 - PA9
16 A8 - PA8
17 5V - +5V rail
18 G - Ground plane
19 G - Ground plane
20 3V3 - +3.3V rail

Header 2 properties

Name Unknown
Reference None
Type Pin header (2.54mm, 20x1, male)

Header 2 pins

# Name Function Connected to
1 A0 - PA0
2 A1 - PA1
3 A2 - PA2
4 A3 - PA3
5 A4 - PA4
6 A5 - PA5
7 A6 - PA6
8 A7 - PA7
9 B0 - PB0
10 B1 - PB1
11 B2 - PB2
12 B10 - PB10
13 B11 - PB11
14 B12 - PB12
15 B13 - PB13
16 B14 - PB14
17 B15 - PB15
18 G - GND
19 5V - +5V rail
20 3V3 - +3.3V rail

USB connector properties

Name Unknown
Reference None
Type USB C

USB connector pins

# Name Function Connected to
A1/B12 - GND Ground plane
A4/B9 - VBUS +5V rail
B8 - SBU2 N.C.
A5 - CC1 N.C.
B7 - D- PA11 via 22Ω
A6 - D+ PA12 via 22Ω
A7 - D- PA11 via 22Ω
B6 - D+ PA12 via 22Ω
A8 - SBU1 N.C.
B5 - CC2 N.C.
B4/A9 - VBUS +5V rail
B1/A12 - GND Ground plane

SWD header properties

Name Unknown
Reference None
Type pin header (2.54mm, 4x2, male)

SWD header pins

# Name Function Connected to
1 G GND Ground plane
2 C SWCLK PA14
3 5V 5V +5V rail
4 3V3 VCC +3.3V rail
5 T TX PA9
6 G GND Ground plane
7 R RX PA10
8 D SWDIO PA13

Screen connector properties

Name Unknown
Reference None
Type FFC connector (0.5mm, 1x8, female)

Screen connector pins

# Name Function Connected to
1 - PWR +3.3V rail via transistor
2 - GND Ground plane
3 - RST PB6
4 - DC PB4
5 - SDA PB5
6 - SCL PB3
7 - VCC +3.3V rail
8 - GND Ground plane

Devices


Generic FLASH properties footprint

Name W25QXX
Reference Unknown
Manufacturer Unknown
Part Generic FLASH
Marking Unknown
Datasheet Unavailable
Package SOIC 8 pins
Description Generic Dual/Quad SPI FLASH

Generic FLASH pins footprint

# Name Function Connected to
1 - /CS PB12
2 - DO PB14
3 - /WP Ground plane
4 - GND Ground plane
5 - DI PB15
6 - CLK PB13
7 - /HOLD Ground plane
8 - VCC +3.3V rail