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App note: F-RAM for smart E-Meters
Cypress’ application note on smart E-Meters and why its more advantageous to use F-RAM over conventional EEPROMs. This application note provides an overview of a smart electricity meter, or Smart...
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Open source hardware GPIB USB adapter update
Steven Casagrande posted an update on his open source hardware GPIB USB adapter: After many days, I just finished off firmware version 5 for my adapter. This is probably my biggest update yet. A lot...
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RFID reader for BuildBrighton door pt II
Chris Holden has written an article on their new door entry system at BuildBrighton: The basic idea is this: A keyfob is presented to the reader and the serial number read from it. The keyfob number...
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GPIBUSB Adapter update
Another update on Scasagrande’s project, GPIBUSB Adapter rev4: After working closely with a few individuals it was discovered that some of the pre-existing GPIB software (such as KE5FX’s tools) has...
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Demystifying hardware security with the Bus Pirate
Alain Iamburg over at FishNet Security writes: Welcome to Part III of this series on hardware security. In Part II we explored passive data captures of EEPROM read operations over the SPI bus. In this...
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Talk SPI to EEPROM part3: Test SPI Protocol with Bus Pirate
Jan Cumps tested out SPI Protocol using a Bus Pirate: It wasn’t my initial intention to use the Bus Pirate. But my first naive attempts to talk from Hercules to EEPROM failed. I could create the SPI...
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App note: Adding flexibility by using multiple footprints for I2C™ serial...
Save PCB space by utilizing EEPROM SOIC-8 area, here’s an application note from Microchip. Link here (PDF) For many years, the 8-lead SOIC package has been the most popular package for serial EEPROMs,...
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EEPROM rotation for ESP8266 and ESP32
Xose Pérez over at Tinkerman writes: The Arduino Core for ESP8266 and ESP32 uses one SPI flash memory sector to emulate an EEPROM. When you initialize the EEPROM object (calling begin) it reads the...
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BUS PIRATE: first test of Ultra v1b with SPI EEPROM
Bus Pirate prototype “Ultra” v1b successfully wrote to and read back from a 25LC020A SPI EEPROM chip. The image shows the Bus Pirate reading 8 bytes of 0x02 from the EEPROM at address 0x00, and the...
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App note: Implementation of error code correction in EEPROMs
App note from ON Semiconductors about their EEPROM error correction. Link here (PDF) Some of ON’s automotive EEPROMs, like the Grade 0 NV25xxx family (SPI, 1 – 64 Kb) and the Grade 1 CAV24Cxx /...
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