Paul Alexandrow's Techlog

Topic: Microcontrollers

ATmega32U2 PLL Control and Status Register: Datasheet Error

Screenshot of the PLL Control and Status Register description from the ATmega32U2 datasheet.

There seems to be an error in the datasheet for ATmega32U2 (and possibly also ATmega8U2 and ATmega16U2). There, the bits of the PLLCSR register are named DIV5, DIV3, PINDIV, PLLE and PLOCK. However, it seems in iom32uh.h the prescaler bits are called PLLP0, PLLP1 and PLLP2 respectively. Therefore, these are the correct C statements to […]

2023-05-24 16:00 |

LED UV Box Project

A little project I finished recently: a LED based UV exposure box for building prototype PCBs. Video inside!

2018-01-28 19:02 |

Hello!

Portrait of Paul Alexandrow I am a freelance IT consultant, software developer and commercial pilot from Vienna, Austria.

In this Blog I post random notes about findings and solutions to technical issues that I encounter during my daily - or sometimes nightly - work.

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