Filter Circuit for USB , EEPROM and RS232 module

[eva1000]

hello  everyone ,
As i am trying to create a PCB project for my university project with stm32 MCU , at the moment i am kind of stuck in process of finding optimal filter circuit one needs to implement for optimal functioning , i have been reading through all the materials i can find and least to say there are many mixed suggestion and i also watched the stm webminar  and MOOC for USB but i am even more confused, 
so if any one can give me link for a  working project or just material that can help me implement my targetted components , any project that have implemented the suggested circuit will help
I am using M24M01 EEPROM , i want to add a USB-A port so that i can export saved files to USB thumbdrives and also add max232 module for serial communication 

[FBL]

Hi @eva1000 

For USB type A implementation you can follow the schematics provided here

common-mode EMI filter and ESD protection are essential for robust connection and clean signals. For reference MB1939.

[Andrew Neil]

Check out ST's Application Notes; eg, 

AN4879: Introduction to USB hardware and PCB guidelines using STM32 MCUs

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@eva1000 wrote:

 i am trying to create a PCB project for my university project with stm32 MCU 

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What STM32, exactly?

For each family, you should find a Hardware Development guide; eg,

AN2586: Getting started with STM32F10xxx hardware development.

As @FBL suggested, check-out the schematics for ST's boards.

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@eva1000 wrote:

 add max232 module for serial communication 

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Is this a retro design project?!

[Andrew Neil]

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@eva1000 wrote:

 max232 module for serial communication 

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The MAX232 is a 5V part - so not suitable for use with STM32.

Plenty of 3V alternatives are available ...