NXP PCF7923

[+giriprakash1978]

Hello friends.......i have grand i10 with Proximity key......have to make spear one, so i take one new key and program but i forget to program both new and old, after that old one didn't work ....i try again  to program both but proximity key didn't recognized by programmer, so i decided to unlock that proximity key with the help of KD X2, unlock done!! and try to program, again same problem didn't recognized key by programmer.... i decided to take that PCF7923 chip from PCB and used VVDI prog to read, that chip is protected so i erase that chip....every things  erase except hex adress 0000:xxxxxxxx (first four pair hex) and 001F0: 5th  to 14th pairs of hex con't erase. i try same with PCF7945 used chip and have same problem....please tell me friends this NXP chip only 1 time used or i am doing some things wrong!!!!!!help me thanks

[vitluch]

Hello! First and last page have read-only attributes. It is ok. First page have serial number.

[+giriprakash1978]

hi thanks for replay.....please tell me how to connect PCF7922 with i prog pro?

[vitluch]

PCF7922 is like PCF7961.

[+giriprakash1978]

i don't see there any help then  how to connect?

[vitluch]

PCF79xx pinouts.