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Dan Meeks

UNITED STATES OF AMERICA • + Follow Edit Project

Engineer

SOUTH AFRICA
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Tools, APP Software Used etc.

KiCAD

Description

SPI Level Shifter

I needed to program a SPI FLASH, at 1.8V. Using FT232H USB/Serial converter the levels are at 3.3V. This board provides level shifting between the two. For power it uses a USB Mini (no data, just power).

On-board regulators make 3.3V and 1.8V.

MASTER side jumpers select 3.3V or 5V levels.

SLAVE side jumpers select 3.3V or 1.8V levels.

Also jumpers are provided to invert the signals if needed.

Signals converted:

SPI SCLK

SPI MOSI

SPI MISO

SPI CSb (chip select, or slave-select)

In my use case, I select 3.3V on the MASTER side (FT232H), and 1.8V on the SLAVE side (FLASH).

Download BOM(Bill of materials)

May 15,2024

547 views

SPI Level Shifter

Designed to program SPI FLASH using FT232H adapter. The adapter levels are 3.3V, the FLASH is 1.8V. This performs the level shifting.

547

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Published: May 15,2024

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BOM(Bill of materials)

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File Last Updated: 2024/05/15 (GMT+8)

File update record

2024-05-1510:21:23

Gerber file is updated.

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Attribution-ShareAlike (CC BY-SA) License

Under the Attribution-ShareAlike (CC BY-SA) License.

PCB
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Topic

DIY Electronics

Computers & USB

KiCad Design Contest-Communication Theme

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SPI Level Shifter I needed to program a SPI FLASH, at 1.8V. Using FT232H USB/Serial converter the levels are at 3.3V. ...

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