Eprom manual

An EPROM (rarely EROM), or erasable programmable read-only memory, is a type of programmable read-only memory (PROM) chip that retains its data when its power supply is switched off. Computer memory that can retrieve stored data after a power supply has been turned off and back on is called non-volatile. The operation to EPROM chip is similar to general BIOS chip. The main diffrence is: the programmer jumper needs relevant ground setup. As an example: write a 27C16(programming voltage is V), also you need change the Vcc voltage setting accordingly. Some chips need the Vcc set to V when doing programming. 1. eprom programmer user manual release august 1. use in life support devices or systems must be expressly authorized. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without the express written approval of.

EPROM is inserted into the ZIF SOCKET for programming. LED1 glows to indicate the application of the programming pulse to the EPROM. Before applying the programming pulse to the EPROM, select the programming voltage (25V, 21V or V, as specified by the manufacturer) applied to pin 21 of the ZIF SOCKET by using jumper J1. Carefully remove the hot glue from the EPROM - either with your fingers, needle nose pliers or a small knife. Once the glue is removed, insert a thin screwdriver or small knife between the chip and the socket (not below the socket) to gently lift one edge of the chip 1/16”, then the other side 1/16”, then repeat until the chip is free, taking care not to bend the pins. Some EPROM chip, like W27C or W27C,they are 27series, but no erasing window on the top. Then, they have to be erased electronically. When programming this type, besides the DIP setup and insert tion of IC to 32 PIN ZIP socket, the special chip and special voltage button have to be adjusted accordingly.

Manual de usuario del visualizador de textos (TD) SIMATIC (contenido en SMB31 y SMW Control de escritura en la memoria no volátil (EEPROM). DE-4 EPROM Erasing System. Operating Instructions. Introduction. Ultraviolet Light. The invisible band of radiation just beyond he violet end of the visible. View datasheets for ST6 Family Eprom Prog - Manual by STMicroelectronics and In Remote mode, the EPROM programmer is connected to a DOS-compatible PC.