2.2.2 megaAVR® and Smart Battery Devices

  • ATmega16HVB stack pointer does not initialize correctly and must be initialized by the application. This is an issue with the actual chip, and the simulator just reflects reality, see data sheet Errata section 38.1.1 (Rev. B).

  • ATmega169PA/165PA/329P/325P/3250P/3290P/649P/645P/6490P/6450P watchdog timer does not work (#9301)

  • The system clock prescaler is not included in simulator models. Writing CLKPR will not affect system clock.

  • External interrupt rising flank triggers on both flanks on some ATmega devices (#13434)

  • CLKPR is not updated when debugging if the CKDIV8 fuse is programmed (#10515)