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This is very important when you want to smoothly and reliably burn those old CMOS and even older NMOS EPROM chips. Optional higher Vcc voltages (5.6v and 6.2v) will be available when an external AC power supply is used. Quality components are used, for example, the high current tolerant coil is used to boost the robustness of the circuitry. (2) AM29F040B-120JC EPROM Plcc - Usa Quick Ship - 9.59. I found some Willem EPROM programmer on eBay but it wants DB25 parallel port and my all computers do not have LPT ports (USB ports only). As an example: write a 27C16(programming voltage is 12.5V), also you need change the Vcc voltage setting accordingly. Folks, I am looking for new Willem or Arduino EPROM programmer to program MCS48 (8049/8041) microcontrollers. The main diffrence is: the programmer jumper needs relevant ground setup. High precision digital switching ICs are used to control the Vpp circuit ( vs cheap regular transistor controlled), thus dramatically improves the burning accuracy and reliability by multitudes. The operation to EPROM chip is similar to general BIOS chip. See how is supports 18Fxxx but not any Ks or Js.
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The device supported PIC makes interesting reading Helped me group PICs. The PCB layout is fully optimized and the digital circuitry is separated from the power supply circuit, thus reducing interference. Willem Programmer Theres a Willem programmer clone on an online selling websit.
Kee willem eprom programmer series#
We've added support for those new 25 series SPI Flash Bios chips ! This board has many enhanced features, such as built-in PLCC32, FWH / LPC sockets, thus NO NEED to pay extra to purchase these optional adapters. Introducing our newest Universal Willem EPROM programmer PCB5.0E SMD version! This is a brand-new and fully tested enhanced Dual Power (USB/AC) Willem Universal EPROM EEPROM programmer, PCB version PCB5.0SMD.