EEPROM Chip Programming

Some EPROM chip, like W27C512 or W27C512,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.

1. WinBond EEPROM

The programmer supports: W27E512,W27E010,W27C010,W27C020,W27C040

Operation steps:  1) Setup the 12 bit DIP, select the chip model W27CXX

2) Take out the jumper protectionline, the programming voltage auto to 15V, special model jumper auto to W27C position --press the special chip button to W27C position (last bit, the LED 7 light up position)

3) Insert W27CXX to 32PIN ZIP socket, click the software upper right corner erase button, the program indicator lamp flashs and progress bar is not moving, then directly press reset button, the chip starts to erase.

4) Check write in, everything is normal.

2. SST EEPROM

This programmer supports: 27SF256, 512, 010, 020, 040;37VF512, 010, 020, 040.

Operation steps (Vpp keeps as 12V): 1) Setup the 12 bit DIP, select the chip model W27CXX

2) Take out the jumper protectionline, the programming voltage auto to 15V, special model jumper auto to W27C position --press the special chip button to W27C position (last bit, the LED 7 light up position)

3) Insert W27CXX to 32PIN ZIP socket, click the software upper right corner erase button, the program indicator lamp flashs and progress bar is not moving, then directly press reset button, the chip starts to erase.

4) Check write in, everything is normal.

3. MX26C4000 EEPROM

Operation steps (VPP keeps as 12V): 1) Setup the 12 bit DIP, select the chip model W27CXX

2) Take out the jumper protectionline, the programming voltage auto to 15V, special model jumper auto to W27C position --press the special chip button to W27C position (last bit, the LED 7 light up position)

3) Insert W27CXX to 32PIN ZIP socket, click the software upper right corner erase button, the program indicator lamp flashs and progress bar is not moving, then directly press reset button, the chip starts to erase.

4) Check write in, everything is normal