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STLUX385ATR データシート(PDF) 53 Page - STMicroelectronics |
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STLUX385ATR データシート(HTML) 53 Page - STMicroelectronics |
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53 / 99 page ![]() DocID024387 Rev 2 53/98 STLUX385A Option bytes 8 Option bytes The user option byte is a memory E²PROM area allowing users to customize the IC device major functionalities: • ROP: read-out protection control field • UBC: user boot code protection • PWM: configurable reset output value • WDG: internal watchdog HW configuration • AFR: alternate multifunction signals configuration • CKC: clock controller functionalities (PLL, HSE enable, AWU clock selection…) • HSE: clock stabilization counter • WAIT: Flash and E²PROM wait state access time has to be configured with value 0x00 • BOOT: configurable internal boot sources • BL: boot-loader control sequences Except the ROP byte all the other option bytes are stored twice in a regular (OPT) and complemented format (NOPT) for redundancy. The option byte can be programmed in ICP mode through the SWIM interface or in IAP mode by the application with the exception of the ROP byte that can be only configured via SWIM interface. Refer to the STM8 Flash programming manual (PM0047) for further information about Flash programming. Refer to STM8 SWIM communication protocol and debug module user manual (UM0470) for information on SWIM programming procedures. |
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