#Eprom programmer 5401 full#
Of this card is to design a PCB that can be used in a variety of ways depending on which components are fitted This allows the user to have full hardware control of the signals by selecting switches for testing, or making permanent changes by using wired links. Use two cards should that function be required. Note: The card may be used either with an EPROM programmer or a memory card, not both together. A decoder chip layout is also provided.Īll devices used are "through-hole" allowing easy soldering. Secondly four multiple memory chips may be connected together. The spacing of the sockets and headers allow either a 0.6" or 0.3" pitch devices tp be paralleled up together. The address and data lines are then only available via a bespoke connector. In the case of some older 8-bit game computers and the Z88 card for example, the flash or EPROM chip is inside a plug-able module.
The target 64 way DIN41612 connector allows a plug and socket to be used.Īdditional tri-state switches are provided to take up the job that some adapters do holding chip select pins, for example, when the number of active pins from the programmer is at a premium.They may be fitted at either a 0.3" or 0.6" pitch. This allows larger devices to be programmed in several steps using a 32 pin programmer. In some cases the physical chip or the footprint is not available. The user may know, for example, which signals need to be swapped, changed or held at a different logic level and would welcome a board to try different combinations before the final solution is found, either be theory or by trail and error.įit into the ZIF socket of the EPROM programmer. Larger memory devices that are not supported may also be programmed, by manually setting the most significant bit individual address signal lines to a 1 or 0 using the tri-state switches provided. Firstly it allows the user to set in hardware, a source footprint to be translated into a target footprint, using either switches, jumpers or jumper leads. This break out card addresses both these applications. This works well if the chip type and footprint is in the database but what happens when a variation is required?Ĭonnecting Memory chips in parallel to expand the overall memory size is a common requirement. These could be used in the (Target) location using (Zero Insertion Force) ZIF sockets if required.ĮPROM Programmers are now software controlled. There are already adapters on the market that change the footprints from the 0.3" or 0.6" DIL to other footprints like PLCC, TSOP. Using hardware switches and links to change the position of the signals for different footprints using different "Dual In Line" (DIL) or DIP based EPROM Erasers seemed like a good starting point. or a connector to go to a card with the chip inside the card.Redirecting the active programming signals to the (Target) device, be it.and set the remaining signals to the footprint that it is set.changing the state of some of the signals that the chip does.Convince the EPROM Programmer (Source) that the chip is connected by.I found that I needed several attempts hard-wiring the adapter, before I reached the final configuration that worked. This is either propriety based, or could be changed by the user once the final configuration was known. They have many electronic and industrial applications such as controlling a vehicle's engine output and fuel delivery.The main stumbling block I found when changing a footprint that was not listed was that all programming changes are described with software.
What are chip programmers used for?Ĭhip programmers eliminate the need for mechanical switches when programming.
#Eprom programmer 5401 software#
A software program on the computer transfers data to the chip programmer selects the interface type as well as the device and then begins the process of programming.
#Eprom programmer 5401 serial#
Some devices require data on the serial pins while others receive the data via a serial interface.Ĭhip programmers are connected to a computer via a USB, parallel port or Local Area Network (LAN) interface. Signals are transmitted through the connection pins of the chip programmer into the target device. These type of programmer devices configure the device via the socket on the programming equipment or by configuring the device on a PCB (printed circuit board). In the case of EPROMs, once they have been programmed, they can be erased with the use of an EPROM UV eraser. They support a broad range of chip sets such as EPROMs, EEPROMs and flash, ROMs, GALs and microcontrollers. Chip programmers known as device programmers or IC programmers are items of electronic equipment that arrange written software to configure programmable devices.