Table of Contents
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Table 3-1. Troubleshooting guide.
Problem
Unable to do ISP and high-
voltage programming using
Internal 1MHz RC oscillator
STK521 User Guide
Reason
Usage of internal 1MHz RC
oscillator not recommended
Troubleshooting Guide
Solution
To start the microcontroller in low power
mode, use the 128KHz oscillator
Section 3
3-12
8194B–AVR–01/12
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