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EEPROM with single pin interface
Two years ago Microchip introduced serial EEPROMs with UNI/O. The speciality is the single pin data interface, so the memory chip needs only 3 pins including power. This can be great help for the...
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Web platform: 32Mbit flash instead of EEPROM
megabug replaced the 1Mbit EEPROM storage chip on the web platform with a 32Mbit (4MB) flash rom chip. Support is already available in the Microchip TCP/IP stack, so all you need to do is swap the...
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Bus Pirate Zeno zit zapper hack update
Restoring a Zeno zit zaper tip was one of the first published ‘hacks’ using the Bus Pirate a few years ago. It’s still a super popular post that gets a ton of hits. Here’s some updates: Was jacking...
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Bus Pirate: Modifying the EEPROM on a LED POV fan
MrZor decided to find some use for his Bus Pirate. After dissembling a LED POV fan he figured out that it uses a 24LC02B EEPROM chip to store the text displayed on the device. The 24LC02B is a I2C...
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Reprogramming USB Webkey dongle using Bus Pirate
JJShortcut took one of the webkey USB devices his school was discarding and decided to reverse engineer it. The device plugs into the USB port on a PC and when its on-board button is pushed it opens...
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App note: Extending the life cycle of emulated EEPROM in program memory
Some applications require you to store data that wont be lost if the power goes down. Usual solutions involve either using an on-chip EEPROM or external memory devices. This app note from Microchip...
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STM M24LR04E-R 4-Kbit dual interface EEPROM with RFID
STMicroelectronics has introduced the M24LR04E-R 4-Kbit Dual Interface EEPROM with RFID. “The M24LR04E-R device is a dual-interface, electrically erasable programmable memory (EEPROM). It features an...
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HOW-TO: Access Bus Pirate v4 on-board I2C EEPROM
Bus Pirate v4 has an on-board 24xx64 8Kbyte data storage chip called an EEPROM (IC3). It can be used to store various settings and preferences, but cooler, the EEPROM’s I2C interface can be accessed...
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App note: Bit Banging I2C on mid-range MCUs with the XC8 C compiler
Bit Banging I2C on mid-range MCUs with the XC8 C compiler: This application note is intended to serve as a reference for communicating with Microchip’s 24XXXX series Serial EEPROM devices without...
View ArticleApp note: EEPROM emulation using flash
Here’s is a video describing the basic concepts of using Freescale flash memory to emulate EEPROM.
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MEEPROMMER: (E)EPROM programmer based on Arduino hardware
mkeller0815 built his own programmer – the MEEPROMMER, that is available at github: The idea behind this EEPROM programmer was to have a tool to get data on a 28Cxxx EEPROM for my own 6502 based...
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Tips and tricks using the 24LC256 I2C EEPROM memories
Jechavarria shared some tips and tricks on using the 24LC256 I2C EEPROM memories: I resume this brief series of articles with another device I usually use. It’s the popular 24LC256 I2C EEPROM memory,...
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Bus Pirate meets the 93LC46B
Bob writes: I found an old EEPROM chip in my spare parts collection, the 93LC46B. The data sheet says it communicates using 3-wire serial I/O, and can store 1024 bits organized either as 8- or 16-bit...
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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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