SuperPro EPROM Programmers


Xeltek SuperPro universal programmers support a variety of EPROM / EEPROM chips from different manufacturers.

What are EPROM and EEPROM?

EEPROM stands for Electrically Erasable Programmable Read-Only Memory, and EPROM stands for Erasable Programmable Read-Only Memory. EEPROM, unlike EPROM, can be written in or programmed more than once. Data stored in an EEPROM chip is permanent, unless the user decides to erase and replace the information it contains. Furthermore, the data stored in an EEPROM chip is not lost even when the power is turned off. An EPROM can also retain its data when its power supply is switched off. EPROM devices have two versions: OTP (One-Time Programmable) and UV version. The OTP version EPROM can be programmed once and it can't be erased electrically. Once programmed, the user can only reprogram the area which was not programmed before. The UV version EPROM is a reprogrammable device. After erasing by exposing under strong ultraviolet light, the user can program the UV EPROM again.

Programming EPROM/EEPROM using Xeltek SuperPro programmers


EEPROM Programming

Xeltek programmer software includes Chip_Erase, Blank_Check, Program, Verify and Read functions. Each device also has a basic Auto operation, which will automatically execute chosen operations in sequence. Users can edit Auto in the function screen or program chips by selecting different functions manually.

Figure 1 shows a screenshot of programming an EEPROM MX28F1000P. Follow Test Procedure I to test your own EEPROM.

Test Procedure I:

    1. Select device
    2. Insert the socket adapter at the bottom of the 48pin DIP socket with the adapter part number on the top
    3. Insert the chip into the socket by following the position of pin 1 according to the instructions in the adapter information box.
    4. Enable Insertion Test (and ID check) under operation option of the software to verify if setup is correct prior to performing any chip operation.
    5. Load and edit file in buffer.
    6. Run Erase, Blank_Check, Program, Verify.

Figure 1

For some EEPROM devices that don't have Erase function in the software, the user needs to erase the chip by filling the buffer with all "FF", then running Program and Verify. For this instance, please use Test procedure II.

Test procedure II:

    1. Select device
    2. Insert the socket adapter at the bottom of the 48pin DIP socket with the adapter part number on the top.
    3. Insert the chip into the socket by following the position of pin 1 according to the instructions in the adapter information box.
    4. Enable Insertion Test under operation option of the software to verify if setup is correct prior to performing any chip operation.
    5. Erase the chip by filling the buffer with all "FF", then running Program and Verify.
    6. Edit the buffer or load file to the buffer
    7. Run Blank_Check, Program, Verify

EPROM Programming

ERPOM devices usually have a one-time programmable (OTP) and a UV erasable version. For an OTP version, the memory in each address cannot be programmed one time. For a UV erasable versions, the user can use an EPROM Eraser to erase data before reprogramming.

Microchip 27C128 shown in Figure 3 is an EPROM with OTP version and UV erasable version. The test procedure is same as EEPROM except Erase.

Figure 2

Figure 3

Serial EEPROM Programmer with ISP

Some EEPROMs can be programmed in-circuit with ISP header cable, please refer to our ISP programming page for connecting the chip on target board to the programmer. Xeltek in-system programming tools provide a convenient method for configuring microcontrollers and various serial devices. For more details please check In circuit serial Programming (ICSP).

For more information, please click the button below or call 408-530-8080.

Xeltek EPROM Programmers

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