MCU War Stories, Part 10: Clock Drift Between Two CAN Nodes at -40°C
Two CAN nodes with 1% crystal tolerance behaved fine at room temperature. At -40°C the bit timing diverged enough to produce intermittent frame errors. The diagnosis took a temperature chamber and a logic analyzer.
Two CAN nodes with 1% crystal tolerance behaved fine at room temperature. At -40°C the bit timing diverged enough to produce intermittent frame errors. The diagnosis took a temperature chamber and a logic analyzer.
Overview
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Series
Part of MCU War Stories (installment 10).
Related notes
Tags
- can-bus
- clock-drift
- temperature
- embedded
- debugging
Manish Bookreader
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