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Vizors Eeprom programming page
I don't take responsibility of anything what you may cause using this information found on this/these pages! This information is for educational purposes only! So don't cry to me if u burn your house or etc...
Last update at 10.11.1999 20:15:39
This programmer worked fine, using eeproms 24c16 (Nokia 5xxx), 24c64/65 (Nokia 6xxx). And it works with all 24cXX, I guess.
The picture number 1 is that what I use, it doesn't support in-circuit programming.
The picture number 2 is that what I also use, it does support in-circuit programming (just added 9V battery).
Picture 1
Picture 2
And here is the PCB layout of picture 1 (from cobberside & componentside)
And here is the pin-out of 24cXX and connector to eeprom (which is really hard to find, other way is to do it by your self like I did).
The connector in the picture isn't the right one (it is for 14 pins?), but just like the 8 pins one. (U can order it from
here)
Component list for programmer number 1:
Resistors
R1 - 10K (1/4)
R2 - 10K (1/4)
Diodes
D1 - 1N4148
D2 - ZENER DIODE 1N5230 (.5W)
D3 - ZENER DIODE 1N5230 (.5W)
Capacitors
C1 - 470uF (16V)
C2 - 47uF (16V)
Voltage Regulator
78L05
Others
W1 - 1cm Wire (Refer to the PCB)
Connector for PC serial port (9-pin female)
Connector for eeprom (look above)
Connection board cobber (PS. Sorry my bad english)
Software
I have used separate of progs, but best (this far) is PonyProgrammer. U can download it from here (free ofcourse).
First try to calibrate your eeprom programmer (eeprom should be connected to the eeprom programmer). If failed try again.
If still failed check once more your programmer.
If ok. Try to read your eeprom (set up the eeprom type settings first (the programm won't found your programmer in the setup)). If succesfull your programmer works correctly. If failed and u have self made connector to eeprom test many times (I didn't got it work at first time, u have to keep it very carefully that it wont move during the reading).
If got it succesfull, don't try to write it back, because it won't work because u have to add an external power supply first (eeprom programmer picture 2), or desolver the eeprom off from the phone (It very difficult to solver back - believe me ;-), or just lift up few pins (I don't know which pins). Good luck!!
If u have something to fix or something new information which not found on here please don't be afraid to contact me!