STK521 User Guide
3-12
8194B–AVR–01/12
Section 3
Troubleshooting Guide
Table 3-1.
Troubleshooting guide.
Problem
Reason
Solution
Unable to do ISP and high-
voltage programming using
Internal 1MHz RC oscillator
Usage of internal 1MHz RC
oscillator not recommended
To start the microcontroller in low power
mode, use the 128KHz oscillator
Summary of Contents for STK521
Page 1: ...8194B AVR 01 12 STK521 User Guide ...
Page 18: ...STK521 User Guide 6 16 8194B AVR 01 12 Figure 6 1 Schematics 1 of 3 ...
Page 19: ...STK521 User Guide 6 17 8194B AVR 01 12 Figure 6 2 Schematics 2 of 3 ...
Page 20: ...STK521 User Guide 6 18 8194B AVR 01 12 Figure 6 3 Schematics 3 of 3 ...
Page 21: ...STK521 User Guide 6 19 8194B AVR 01 12 Figure 6 4 Assembly drawing 1 of 1 ...