Datasheet

DocID8349 Rev 7 155/170
ST7LITE20F2 ST7LITE25F2 ST7LITE29F2 Device configuration
169
• OPT1 = FMP_R Read-out protection
Read-out protection, when selected provides a protection against program memory
content extraction and against write access to Flash memory. Erasing the option bytes
when the FMP_R option is selected will cause the whole memory to be erased first and
the device can be reprogrammed. Refer to the ST7 Flash Programming Reference
Manual and Section 4.5: Memory protection for more details
0: Read-out protection off
1: Read-out protection on
• OPT0 = FMP_W Flash write protection
This option indicates if the Flash program memory is write protected.
0: Write protection off
1: Write protection on
Warning: When this option is selected, the program memory (and the
option bit itself) can never be erased or programmed again.
Table 93. Size definition
Sector 0 size SEC1 SEC0
0.5k 00
1k 01
2k 10
4k 11
Table 94. Option byte default values
Option byte 0
7 0
Option byte 1
7 0
Res.
OSCRANGE
2:0
SEC
1
SEC
0
FMP
R
FMP
W
PLL
x4x8
PLL
OFF
PLL32
OFF
OSC
LVD
1
LVD
0
WDG
SW
WDG
HAL
T
Default
Value
11111 10011 1 011 1 1