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STM8AL3LE8x bảng dữ liệu(PDF) 62 Page - STMicroelectronics

tên linh kiện STM8AL3LE8x
Giải thích chi tiết về linh kiện  Automotive 8-bit ultra-low-power MCU, 64 KB Flash, EEPROM, RTC, AES, LCD, timers, USARTs, I2C, SPIs, ADC, DAC, COMPs
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STM8AL3LE8x bảng dữ liệu(HTML) 62 Page - STMicroelectronics

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Option byte
STM8AL31E8x STM8AL3LE8x
62/133
DocID027180 Rev 5
7
Option byte
Option byte contain configurations for device hardware features as well as the memory
protection of the device. They are stored in a dedicated memory block.
All option byte can be modified in ICP mode (with SWIM) by accessing the EEPROM
address. See Table 12 for details on option byte addresses.
The option byte can also be modified ‘on the fly’ by the application in IAP mode, except for
the ROP, UBC and PCODESIZE values which are only taken into account when they are
modified in ICP mode (with the SWIM).
Refer to the STM8AL31E8x/STM8AL3LE8x Flash programming manual (PM0054) and
STM8 SWIM and Debug Manual (UM0470) for information on SWIM programming
procedures.
Table 12. Option byte addresses
Address
Option name
Option
byte
No.
Option bits
Factory
default
setting
76
54
3
2
1
0
00 4800
Read-out
protection
(ROP)
OPT0
ROP[7:0]
0xAA
00 4802
UBC (User
Boot code size)
OPT1
UBC[7:0]
0x00
00 4807
PCODESIZE
OPT2
PCODE[7:0]
0x00
00 4808
Independent
watchdog
option
OPT3
[3:0]
Reserved
WWDG
_HALT
WWDG
_HW
IWDG
_HALT
IWDG
_HW
0x00
00 4809
Number of
stabilization
clock cycles for
HSE and LSE
oscillators
OPT4
Reserved
LSECNT[1:0]
HSECNT[1:0]
0x00
00 480A
Brownout reset
(BOR)
OPT5
[3:0]
Reserved
BOR_TH
BOR_
ON
0x01
00 480B
Bootloader
option byte
(OPTBL)
OPTBL
[15:0]
OPTBL[15:0]
0x00
00 480C
0x00



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