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Low Voltage-CPU

Page history last edited by Noah Vawter 4 years, 7 months ago

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STM32L476 with Nucleo

 

 

Table of Contents

 


 

In this project, we try to make a low-voltage CPU.

 

Datasheet

ATTiny43U low-voltage CPU:  http://www.atmel.com/dyn/products/product_card_mcu.asp?part_id=4523

 

 

Material

http://cgi.ebay.com/KAPTON-COPPER-CLAD-002-x12-x24-2-SIDES-5576_W0QQitemZ230434034336QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item35a6f052a0

 

 

Eagle Files for PCB:

     lil guy 04.sch     lil guy 04.brd

 

Digikey part numbers for high current switcher:  

 

L1 Inductor 15 µH, Low ESR     http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=DN7545CT-ND

D1 Schottky diode  10BQ015      http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=10BQ015PBFCT-ND

R1 Resistor  680 Ω          http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=RMCF1/10680JRCT-ND

C1 Input Capacitor 4.7 µF      http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=PCE4296CT-ND

C2 Secondary Input Cap. 100 nF      http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=490-1726-1-ND

C3 Output Capacitor  22 µF      http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=338-1803-1-ND

C4 Secondary Output Cap. 22 nF      http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=587-1121-1-ND

 

Sneak Previews of Board and Schematic

 

       

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