STM32....C (LQFP48 and UFQFPN48) Breakout Module

A breakout module for STM32 microcontrollers in LQFP48 and UFQFPN48 footprint.

Basic Features

Focus on small footprint and direct access to most pins.
40 pins broken out, organized as two single row headers in 2.54mm pitch
Footprints for USB-B (THT) or Micro-USB (SMT) Header
Provides a 8 pin Micro-MaTch header for easy access to SWD and UART.
Pushbutton for Reset (press <1 second) and starting the bootloader (press >3 seconds).
Onboard LDO regulator (standard SOT-23-5) can be used for VDD and VDDA, just VDD or bypassed completely.
USB VBUS (5V) is available on a pin and can be routed to the onboard LDO
Dedicated USB disconnect function with proper pullup & disable (conforming to USB spec, not some dirty trickery)
Use of a crystal (SMT 3.2x2.5mm) is optional.
Options can be configured using solder bridges.
Power LED and User LED (on PC13, PB13 or disconnected).
Size: 25x51mm or 20x10 pins in the standard 2.54mm raster

Available pins

These pins are available on the 2.54mm headers:

PA0 - PA12, PA15
PB0 - PB15
PC13 - PC15
5V (USB Vbus or input to the LDO regulator)
Vdd
Vdda
Vbat
NRST
GND (2 times), also used on Vssa

These pins are also available on the Micro-MaTch:

SWCLK, SWDIO, SWO
NRST
GND
Vdd
UART RX, UART TX (which ones can be selected via solder bridges)

These pins are not individually broken out:

Vssa (directly connected to GND)
PD0, PD1 (only connected to the onboard crystal pads)
Boot0 (only connected to the reset / bootloader button)

Comparison to the popular "Blue Pill" boards

Allows to select the STM32 model you want, even the F4 models
Allows to select the optimal power configuration via solder bridges
Gives access to the bootloader via button press
USB disconnect function allows using USB based bootloaders without hassle
Better engineered
- Proper ESD protection for USB
- Ferrite beads in the power traces
- Pads for proper decoupling caps
Conveniant development with SWD, SWO, NRST, UART on one Micro-MaTch connector
Possible to use THT USB-B sockets which are mechanically more stable

Downside is that it is larger, Blue Pill uses 20x7 pins raster.

Some of the supported microcontrollers

STM32F070CB
STM32F072C8, STM32F072CB
STM32F102C8, STM32F102CB
STM32F103C8, STM32F103CB
STM32F301C8
STM32F302C8, STM32F302CB, STM32F302CC
STM32F303C8, STM32F303CB, STM32F303CC
STM32F334C6, STM32F334C8
STM32F401CB, STM32F401CC, STM32F401CD, STM32F401CE
STM32F411CC, STM32F411CE
STM32F412CE, STM32F412CG
STM32F413CG, STM32F413CH, STM32F423CH
STM32L151C6-A, STM32L151C8-A, STM32L151CB-A
STM32L152C6-A, STM32L152C8-A, STM32L152CB-A

These are just the ones that I checked for compatibility. Since ST regards pinout compatibility higly, nearly all STM32 controllers in LQFP48 and UFQFPN48 packages should work on this board.