Download Topview Programmer User Manual

Transcript
4.10 Disable Serial Program
4.10 Disable Serial Program:
This command applies only for the devices that have
Serial Peripheral Interface(SPI) facility. (AT89S53,
AT89LS53, AT89S8252 and AT89LS8252).
A programmable fuse is available in the controller device
to disable serial programming if the user needs maximum system security. The serial programming fuse can
only be programmed or erased in the parallel programming mode.
By using this command user can disable the programming of the device through SPI.
Atmel 89CXX Flash Programmer
58