Microelectronics Blog

Oscilloscope measurements quantify the execution time of a simple digital pin toggle across multiple Arduino boards. Results show that faster CPUs complete the operation in fewer microseconds, though instruction overhead varies by architecture. The data confirm a near-linear relationship between CPU clock speed and pin toggle performance.

Evaluation of EEPROM Programmer performance on Arduino. Overhead from digital I/O measured, and oscilloscope traces confirmed datasheet timing. Active polling of the READY/BUSY pin reduced write latency while maintaining reliability. Sequential write/read verification showed consistent integrity. Future work includes endurance testing, retention studies, and comparing Arduino boards with different clock speeds.

Practical walkthrough of 28C64 EEPROM on Arduino Giga. Pin mapping, minimal API for reads/writes, breadboard + LCD UI. Verified operation, observed write-edge vs datasheet mismatch, early-address retention issues, and plans for timing and READY/!BUSY testing.

The EEPROM Programmer project makes it possible to use Arduino platforms with an extended set of pins to read from and write to EEPROM chips from the AT28Cxx family.