STM8S207MBT3 datasheet(48/103 Pages) STMICROELECTRONICS

48 / 103 page

Option bytes

STM8S207xx, STM8S208xx

48/103

Doc ID 14733 Rev 9

Table 13.

Option byte description

Option byte no.

Description

OPT0

ROP[7:0] Memory readout protection (ROP)

0xAA: Enable readout protection (write access via SWIM protocol)

Note: Refer to the family reference manual (RM0016) section on

Flash/EEPROM memory readout protection for details.

OPT1

UBC[7:0] User boot code area

0x00: no UBC, no write-protection

0x01: Pages 0 to 1 defined as UBC, memory write-protected

0x02: Pages 0 to 3 defined as UBC, memory write-protected

0x03: Pages 0 to 4 defined as UBC, memory write-protected

...

0xFE: Pages 0 to 255 defined as UBC, memory write-protected

0xFF: Reserved

Note: Refer to the family reference manual (RM0016) section on

Flash/EEPROM write protection for more details.

OPT2

AFR7Alternate function remapping option 7

0: Port D4 alternate function = TIM2_CH1

1: Port D4 alternate function = BEEP

AFR6 Alternate function remapping option 6

0: Port B5 alternate function = AIN5, port B4 alternate function = AIN4

1: Port B5 alternate function = I2C_SDA, port B4 alternate function =

I2C_SCL

AFR5 Alternate function remapping option 5

0: Port B3 alternate function = AIN3, port B2 alternate function = AIN2,

port B1 alternate function = AIN1, port B0 alternate function = AIN0

1: Port B3 alternate function = TIM1_ETR, port B2 alternate function =

TIM1_CH3N, port B1 alternate function = TIM1_CH2N, port B0 alternate

function = TIM1_CH1N

AFR4 Alternate function remapping option 4

0: Port D7 alternate function = TLI

1: Port D7 alternate function = TIM1_CH4

AFR3 Alternate function remapping option 3

0: Port D0 alternate function = TIM3_CH2

1: Port D0 alternate function = TIM1_BKIN

AFR2 Alternate function remapping option 2

0: Port D0 alternate function = TIM3_CH2

1: Port D0 alternate function = CLK_CCO

Note: AFR2 option has priority over AFR3 if both are activated

AFR1 Alternate function remapping option 1

0: Port A3 alternate function = TIM2_CH3, port D2 alternate function

TIM3_CH1

1: Port A3 alternate function = TIM3_CH1, port D2 alternate function

TIM2_CH3

AFR0 Alternate function remapping option 0

0: Port D3 alternate function = TIM2_CH2

1: Port D3 alternate function = ADC_ETR

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