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Switching Between Programming and Power Options With Xplained Mini

Last modified by Microchip on 2026/10/23 09:32

Overview

In this video:

Alternate between In-System Programming (ISP) and debugWIRE interface (toggling the power after using Serial Peripheral Interface (SPI) to enable the Debug Wire Enable (DWEN) Fuse).
Switch to ISP from debugWIRE:
- While debugging, selecting Disable debugWIRE and close now allows you to select ISP
Open the Programming dialog box in ISP mode to read the fuse settings.
Program the Clout Out (CKOUT) fuse to put the AVR^® MCU clock out on the COUT pin.
Run the ATmega328PB Xplained Mini at:
- 5 V - reading a clock frequency of 16 MHz
- 3 V - reading a clock frequency of 8 MHz
Understand speed vs. voltage of the AVR MCU from the data sheet.

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Switching Between Programming and Power Options With Xplained Mini

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