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STM8AL3148 데이터시트(PDF) 55 Page - STMicroelectronics

부품명 STM8AL3148
상세설명  Automotive 8-bit ultra-low-power MCU, up to 32 Kbyte Flash, RTC, data EEPROM, LCD, timers, USART, I2C, SPI, ADC, DAC, COMPs
PDF  124 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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STM8AL3148 데이터시트(HTML) 55 Page - STMicroelectronics

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STM8AL313x/4x/6x STM8AL3L4x/6x
Option bytes
57
7
Option bytes
Option bytes 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 bytes can be modified in ICP mode (with SWIM) by accessing the EEPROM
address. See Table 12 for details on option byte addresses.
The option bytes can also be modified ‘on the fly’ by the application in IAP mode, except for
the ROP, and UBC values which can only be taken into account when they are modified in
ICP mode (with the SWIM).
Refer to the STM8L15x/STM8L16x Flash programming manual (PM0054) and STM8 SWIM
and Debug Manual (UM0320) for information on SWIM programming procedures.
Table 12. Option byte addresses
Address
Option name
Option
byte
No.
Option bits
Factory
default
setting
7654
3
2
1
0
0x00 4800
Read-out
protection
(ROP)
OPT0
ROP[7:0]
0xAA
0x00 4802
UBC (User
Boot code size)
OPT1
UBC[7:0]
0x00
0x00 4807
Reserved
0x00
0x00 4808
Independent
watchdog
option
OPT3
[3:0]
Reserved
WWDG
_HALT
WWDG
_HW
IWDG
_HALT
IWDG
_HW
0x00
0x00 4809
Number of
stabilization
clock cycles for
HSE and LSE
oscillators
OPT4
Reserved
LSECNT[1:0]
HSECNT[1:0]
0x00
0x00 480A
Brownout reset
(BOR)
OPT5
[3:0]
Reserved
BOR_TH
BOR
_ON
0x01
0x00 480B
Bootloader
option bytes
(OPTBL)
OPTBL
[15:0]
OPTBL[15:0]
0x00
0x00 480C
0x00



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