27 series eeprom programmer copier free#
For this I use a free utility called HJSplit, which nicely provides numbered file segments. For the larger devices you’ll first need to use a file split utility to split your EPROM file into 4Mb (512KB) segments, as the TL866 thinks you are programming a 4Mb EPROM (ie. If programming a 27C400 (4Mb) you are now ready to go. Finally, unselect the “Device ID Check” check-box. For my STMicroElectronics M27C322 (32Mb EPROM), I select 12.5v Vpp. You then select the Vpp programming voltage suitable for your chosen EPROM. This is a 4Mb 16bit device which uses the JEDEC-approved 40pin DIP pin-out (which is not MASK ROM compatible).
27 series eeprom programmer copier software#
On the TL866 software you simply select the supported 16bit EPROM type 27C4096. The Adapter’s ZIF socket is positioned over the TL866’s ZIF socket allowing it to sit nicely balanced, and with the board edge nicely aligned with the edge of the TL866’s case.A clearly labeled slide switch for “Device Select”, to allow easy visual indication of currently selected device.A simple and intuitive rotary “Bank Select” switch to allow quick, easy, and error free selection of which memory bank to program.In resolving the issues I saw with the existing Google located example, my improved adapter implements: So, after pulling down all the data sheets for the various EPROM’s and drawing up a suitable design, I finally have my improved EPROM Programmer Adapter completed, fully tested, and happily resolving my MASK ROM replacement programming needs using my TL866 EPROM Programmer. I didn’t want the adapter to fall over sideways when the programmers ZIF socket wasn’t clamped shut! I wanted my adapter to sit nicely balanced in the programmer’s ZIF socket. I was unhappy with the physically unbalanced design of having the 42pin ZIF socket alongside the 40pin header (not above it).The use of a push on/off switch for device selection didn’t appear to be the best way to provide a clear visual indication of which device was currently selected.
![27 series eeprom programmer copier 27 series eeprom programmer copier](https://www.mk3.com/thumbnail/crop/1000/1000/products/product/MK9934/tmpro-transponder-maker-pro-2-key-programmer-mk9934-6.jpg)
![27 series eeprom programmer copier 27 series eeprom programmer copier](https://ecs7.tokopedia.net/img/cache/300/product-1/2020/5/29/batch-upload/batch-upload_c8bfe44f-f51e-4cef-a837-f78e6534a4e4.jpg)
These have proven very popular with hobbyists.
![27 series eeprom programmer copier 27 series eeprom programmer copier](https://m.media-amazon.com/images/I/717omIrGnrL._SY355_.jpg)
EPROM programmers that support the above family of devices “out of the box” can run into the hundreds of dollars! Not particularly wallet friendly for most Retro enthusiasts or electronics hobbyists!Ī good example of a very popular EPROM programmer is the TL866 series of USB EPROM Programmers, which can generally be picked up for a very reasonable price. Most of the popular “reasonably priced” EPROM programmers only accept devices up to 40 pins. The challenge is finding a reasonably priced programming solution for these devices.
![27 series eeprom programmer copier 27 series eeprom programmer copier](https://image.made-in-china.com/2f0j00CZEGQYKlVtcH/2020-New-Upa-USB-Programmer-V1-3-with-Full-Adapters-Main-Unit-Upa-USB-1-3-Upa-USB-V1-3-ECU-Chip-Tunning-OBD2-Diagnostic-Tool.jpg)
27C800 – 8Mb, organised as 512K x 16bit in a 42 pin DIP.27C400 – 4Mb, organised as 256K x 16bit in a 40 pin DIP.This family utilise a pin-out that is compatible with MASK ROM’s of the same size, so in many cases they are a simple drop-in replacement. There is a popular family of EPROM’s which are fit for this MASK ROM replacement purpose. No doubt, this also applies to various other cool Retro devices from the 16bit era. Often this requirement comes about due to a need to replace an original MASK ROM in 16bit devices like SNES & Sega consoles, and Amiga computers etc. If you’d like one of these adapters you can find on eBay here: Īmongst Retro Gaming and Retro Computer enthusiasts, there is often a need to program relatively large 42 pin (and 40 pin) 16bit wide EPROM chips.