深圳硕飞科技有限公司
SHENZHEN SOFI TECHNOLOGY
User's Guide
32
SP8 Seriel programmer
Appendix one, Frequently Asked Questions
Why 24 chips don't have the function Erase?
These chips are based on EEPROM technology. Users can directly rewrite the data in a chip and
don't have to erase in advance. Therefore, there isn't a usable operation of Erase.
To clear out the data, only write FFH.
Reasons that the software presents chip initialization error
In programming some chips (such as 24 series), the programmer performs initialized checks on them,
and if it fails, presents Error. Reasons for chip initialization error are:
Chip is not put in socket, or pins are in bad contact.
Misplaced chip, in wrong position or direction
Built-in problem with the chip
Chip types don't match-- the type of chip chosen by the software is different from that of the chip put
in socket
Problem with the ISP connecting line (only for ISP, chips with suffix [ISP])
Reasons that the chip to be programmed cannot work normally
Reasons that the chip to be programmed cannot work normally are:
Failed in loading data file before programming
Built-in problem with the chip
Mistakes in the program steps
Problem with the working circuit or voltage
