STM8AP6226TCX 查看數據表（PDF） - STMicroelectronics

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STM8AP6226TCX

Automotive 8-bit MCU, with up to32 Kbytes Flash, data EEPROM, 10-bit ADC, timers, LIN, SPI, I2C, 3 to 5.5V

STMicroelectronics 

Option bytes

STM8AF61xx, STM8AF62xx

Table 18. Option byte description (continued)

Option byte no.

Description

HSITRIM: Trimming option for 16 MHz internal RC oscillator

0: 3-bit on-the-fly trimming (compatible with devices based on the 128K

silicon)

1: 4-bit on-the-fly trimming

LSI_EN: Low speed internal clock enable

0: LSI clock is not available as CPU clock source

1: LSI clock is available as CPU clock source

OPT3

IWDG_HW: Independent watchdog

0: IWDG independent watchdog activated by software

1: IWDG independent watchdog activated by hardware

WWDG_HW: Window watchdog activation

0: WWDG window watchdog activated by software

1: WWDG window watchdog activated by hardware

WWDG_HALT: Window watchdog reset on Halt

0: No reset generated on Halt if WWDG active

1: Reset generated on Halt if WWDG active

EXTCLK: External clock selection

0: External crystal connected to OSCIN/OSCOUT

1: External clock signal on OSCIN

OPT4

CKAWUSEL: Auto-wakeup unit/clock

0: LSI clock source selected for AWU

1: HSE clock with prescaler selected as clock source for AWU

PRSC[1:0]: AWU clock prescaler

00: Reserved

01: 16 MHz to 128 kHz prescaler

10: 8 MHz to 128 kHz prescaler

11: 4 MHz to 128 kHz prescaler

OPT5

HSECNT[7:0]: HSE crystal oscillator stabilization time

This configures the stabilization time to 0.5, 8, 128, and 2048 HSE

cycles with corresponding option byte values of 0xE1, 0xD2, 0xB4, and

0x00.

OPT6

OPT7

TMU[3:0]: Enable temporary memory unprotection

0101: TMU disabled (permanent ROP).

Any other value: TMU enabled.

Reserved

OPT8

TMU_KEY 1 [7:0]: Temporary unprotection key 0

Temporary unprotection key: Must be different from 0x00 or 0xFF

OPT9

OPT10

TMU_KEY 2 [7:0]: Temporary unprotection key 1

Temporary unprotection key: Must be different from 0x00 or 0xFF

TMU_KEY 3 [7:0]: Temporary unprotection key 2

Temporary unprotection key: Must be different from 0x00 or 0xFF

OPT11

TMU_KEY 4 [7:0]: Temporary unprotection key 3

Temporary unprotection key: Must be different from 0x00 or 0xFF

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Doc ID 14952 Rev 6

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