ST7FLITE29 STMICROELECTRONICS [STMicroelectronics], ST7FLITE29 Datasheet - Page 123

• Manufacturer Part Number: ST7FLITE29
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

15 DEVICE CONFIGURATION AND ORDERING INFORMATION
Each device is available for production in a user
programmable version (FLASH). FLASH devices
are shipped to customers with a default content
15.1 OPTION BYTES
The two option bytes allow the hardware configu-
ration of the microcontroller to be selected.
The option bytes can be accessed only in pro-
gramming mode (for example using a standard
ST7 programming tool).
OPTION BYTE 0
OPT7 = Reserved, must always be 1.
OPT6:4 = OSCRANGE[2:0] Oscillator range
When the internal RC oscillator is not selected
(Option OSC=1), these option bits select the range
of the resonator oscillator current source or the ex-
ternal clock source.
Note: When the internal RC oscillator is selected,
the OSCRANGE option bits must be kept at their
default value in order to select the 256 clock cycle
delay (see
Default
Typ.
frequency
range with
Resonator
External
Clock source:
CLKIN
Value
Res.
7
1
Reserved
Section
LP
MP
MS
HS
VLP 32.768kHz
on OSC1
on PB4
1
OSCRANGE
7.5).
8~16MHz
1~2MHz
2~4MHz
4~8MHz
2:0
1
OPTION BYTE 0
1
SEC1 SEC0
2
0
0
0
0
1
1
1
1
1
OSCRANGE
1
0
0
1
1
0
0
1
1
1
FMP
R
0
0
0
1
0
1
0
1
1
0
FMP
W
0
0
(FFh). This implies that FLASH devices have to be
configured by the customer using the Option
Bytes.
OPT3:2 = SEC[1:0] Sector 0 size definition
These option bits indicate the size of sector 0 ac-
cording to the following table.
OPT1 = FMP_R Read-out protection
This option indicates if the FLASH program mem-
ory and Data EEPROM is protected against pira-
cy. The read-out protection blocks access to the
program and data areas in any mode except user
mode and IAP mode. 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
on page 14
0: Read-out protection off
1: Read-out protection on
OPT0 = FMP_W FLASH write protection
This option indicates if the FLASH program mem-
ory is write protected.
Warning: When this option is selected, the pro-
gram memory (and the option bit itself) can never
be erased or programmed again.
0: Write protection off
1: Write protection on
Sector 0 Size
x4x8
PLL
1
7
0.5k
1k
2k
4k
OFF
PLL
1
for more details
PLL32
OFF
1
OPTION BYTE 1
SEC1
OSC LVD1 LVD0
0
0
1
1
0
1
1
ST7LITE2
SEC0
section 4.5
WDG
SW
1
0
1
0
1
123/131
HALT
WDG
0
1