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Spiflash

florolf·spi-flasher·adapter/spiflash.kicad_pcb

Spiflash PCB layout, top view — open source STM32 board by florolf

About the Spiflash PCB

Spiflash is an open source STM32 PCB design by florolf, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 35 × 22 mm, with 42 components from 19 distinct parts.

Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the XC6206P332MR, SRV05-4-P-T7 and SN74LVC1T45DBVR. By type, the board carries 19 capacitors, 10 resistors, 7 ICs, 4 connectors, 1 crystal and 1 diode.

From the project

USB-C-to-SPI-flash adapter with level shifting, stm32-vserprog compatible

This repository contains an USB-C-to-SPI-flash adapter that is compatible with stm32-vserprog and also has integrated level-shifters towards the SPI flash. This was created mainly to try out the JLCPCB assembly service and because there is no convenient way to program 1.8V flash chips with the "Bluepill + mess of wires" setup I was using before. The pinout is arranged such that it matches the common flash test clips.

Spiflash, from the project README
From the project README

Main components on the Spiflash

XC6206P332MRSRV05-4-P-T7STM32F103C8T6SN74LVC1T45DBVR

Spiflash bill of materials (BOM)

42 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XC6206P332MR
XC6206
Torex Semicon
U1
1
SRV05-4-P-T7
ProTek Devices
U2
1
STM32F103C8T6
STMicroelectronics
U4
4
SN74LVC1T45DBVR
SN74LVC1T45DBV
Texas Instruments
U5, U6, U7, U8
1
X50328MSB2GI
8MHz
Yangxing Tech
Y1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
1
CONN_01X02
Conn_01x02
J3
1
CONN_01X03
Conn_01x03
J4
1
Clip
J5
1
19-217/GHC-YR1S2/3T
green
Everlight Elec
D1
3
CL10A105KB8NNNC
1u
Samsung Electro-Mechanics
C1, C5, C7
1
CL21A106KAYNNNE
10u
Samsung Electro-Mechanics
C2
2
0402CG200J500NT
20p
Guangdong Fenghua Advanced Tech
C3, C6
13
CL05B104KO5NNNC
100n
Samsung Electro-Mechanics
C4, C8, C9, C10, C11, C12, C13, C14 +5
2
0402WGF5101TCE
5k1
Uniroyal Elec
R1, R2
1
0402WGF2200TCE
220R
Uniroyal Elec
R3
4
0402WGF330JTCE
33R
Uniroyal Elec
R4, R5, R9, R10
1
0402WGF1501TCE
1k5
Uniroyal Elec
R6
2
0402WGF1001TCE
1k
Uniroyal Elec
R7, R8

Spiflash design files

The KiCad project lives in the florolf/spi-flasher repository on GitHub; these links point at the commit this page was built from.

Spiflash: common questions

What microcontroller does the Spiflash use?

The Spiflash is built around the STM32F103C8T6, from the STM32 family.

How big is the Spiflash PCB?

The Spiflash measures 35 × 22 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Spiflash?

42 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Spiflash design files?

From the florolf/spi-flasher repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Spiflash design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which florolf chose for the repository.

Can I test firmware for the Spiflash without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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