NEC 78K0/Fx2, Руководство пользователя

Страница: 55 / 83

78K0/Fx2 – CAN it!
[Checksum after Program check box]
If this check box is checked, the flash memory checksum value of the target device is
read from the target device after execution of the Program command and EPV
command.
This value differs from the value displayed in the parameter window of the main
window.
<2> Security flag settings
The <Security flag settings> dialog box is used to specify which security function is
valid.
Figure 49: Device Setup Window – Security flag settings
Caution: The following is the correspondence between the [Erase] and
[Program] Commands when the security functions of a 78K0/FF2
microcontroller are valid!
Chip Erase Command Block Erase Command Program Command
Disable Chip Erase Invalid Invalid Valid (Note1)
Disable Block Erase Valid Invalid Valid
Disable Program Valid Invalid Invalid
Disable Boot block
cluster
reprogramming Invalid Valid (Note2) Valid (Note2)
Notes 1: Since the [Erase] command is invalid, the data that differs from the
data already written in the flash memory cannot be written.
Notes 2: Valid only for the area other than the area specified as the boot area
55