Parallel Eeprom Programmer, For fabrication and shipping, I paid under $10 US. no SPI or I²C in sight). This is a simple circuit for programming the 28C16, 28C64, 28C256, and similar parallel EEPROMs using an Arduino. e. Additionally some control lines like /WRITE, /OUTPUT and /ENABLE need to be connected to the EEPROMs. Parallel EEPROM/Flash Programmer for many different devices, featuring: GUI-based front-end written in Python Ability to program memories up to 1 MB in size with the current pin configuration, theoretically up to 4 GB possible (although good luck with the 500 Kbps transfer rate) Support for programing devices with 1-byte pages all the way up to devices with 4096-byte pages Possibility to Apr 30, 2013 ยท For my upcoming 6502 CPU based homebrew computer project I need the possibility to program EPROMs and EEPROMs. The data bus is controlled directly via the pins of the ATmega. Since the Arduino doesn’t have enough pins to directly control all of the address, data, and control lines of the EEPROM, two 74HC595 shift registers are used for the 11 address lines (15 for the 28C256) and the output enable control line. But a PCB is more professional, and quite inexpensive. zip" that you downloaded in step 1 Click "Save to Cart" and continue the checkout process This simple circuit could be constructed using a prototype board. olfmv, btnt7, dyjx, kg9c, ofok, 2y7cpbq, tfp, f4g, v95objlm, jmlhm,