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STM8L101F2P3ATR データシート(PDF) 34 Page - STMicroelectronics

部品番号 STM8L101F2P3ATR
部品情報  8-bit ultralow power microcontroller with up to 8 Kbytes Flash, multifunction timers, comparators, USART, SPI, I2C
PDF  77 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
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STM8L101F2P3ATR データシート(HTML) 34 Page - STMicroelectronics

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Option bytes
STM8L101xx
34/77
Doc ID 15275 Rev 7
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 row of the memory.
All option bytes can be modified only in ICP mode (with SWIM) by accessing the EEPROM
address. See Table 10 for details on option byte addresses.
Refer to the STM8L Flash programming manual (PM0054) and STM8 SWIM and Debug
Manual (UM0320) for information on SWIM programming procedures.
Table 10.
Option bytes
Addr.
Option name
Option
byte
No.
Option bits
Factory
default
setting
76
54
3
2
1
0
0x4800
Read-out
protection
(ROP)
OPT1
ROP[7:0]
0x00
0x4807
-
-
Must be programmed to 0x00
0x00
0x4802
UBC(User
Boot code size)
OPT2
UBC[7:0]
0x00
0x4803
DATASIZE
OPT3
DATASIZE[7:0]
0x00
0x4808
Independent
watchdog
option
OPT4
[1:0]
Reserved
IWDG
_HALT
IWDG
_HW
0x00
Table 11.
Option byte description
OPT1
ROP[7:0] Memory readout protection (ROP)
0xAA: Enable Readout protection (write access via SWIM protocol)
Refer to Read-out protection section in the STM8L reference manual
(RM0013) for details.
OPT2
UBC[7:0] Size of the user boot code area
0x00: no UBC
0x01-0x02: UBC contains only the interrupt vectors.
0x03: Page 0 and 1 reserved for the interrupt vectors. Page 2 is available to
store user boot code. Memory is write protected
...
0x7F - Page 0 to 126 reserved for UBC, memory is write protected
Refer to User boot area (UBC) section in the STM8L reference manual
(RM0013) for more details.
OPT3
DATASIZE[7:0] Size of the data EEPROM area
0x00: no data EEPROM area (1)
0x01 - 1 page reserved for data storage.(1)
... (1)
0x20 - 32 pages reserved for data storage.(1)
Refer to Data EEPROM (DATA) section in the STM8L reference manual
(RM0013) for more details.



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