This is a home project for a simple parallel EEPROM programmer based on Raspberry PI (model 3). It currently supports 28C16 (2Kx8), 28C64 (8Kx8) and 28C256 (32Kx8) EEPROMs, but it will probably work with all 28C-family (having all the necessary address-bus pins).
The need of model 3 of Raspberry is only for the number of usable GPIOs (but it may be possible to save a lot of pins using serial-to-parallel shift registers for the address bus). The different voltages between Raspberry GPIOs (3.3V) and EEPROM pin (5V) is managed by a TXS0108 (8-bit bidirectional voltage-level translator). The software currently supports single-byte reads/writes, write operation is followed by hard-coded delay to complete a write cycle.
Schematics and PCB layouts are designed with ExpressPCB free CAD software.
The software is written in C and uses WiringPI for GPIO access, and the GNU Getopt function to automate the parsing of command-line options.
Below is the list of options with the relative allowed params, as shown in the help:
Warn! The software, in this release, does not check the value of the parameters, be careful.
See file CHANGES for the project resources change logs
See file TODO for the project future plans
Author : Alessandro Fraschetti (mail: [email protected])
This project is licensed under the MIT license
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