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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AT89C51CC03CA-RDTZM датащи(PDF) 55 Page - ATMEL Corporation |
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AT89C51CC03CA-RDTZM датащи(HTML) 55 Page - ATMEL Corporation |
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55 / 197 page  55 AT89C51CC03 4182K–CAN–05/06 Table 17. Program Lock Bit Program Lock bits U: unprogrammed P: programmed WARNING: Security level 2 and 3 should only be programmed after Flash and Core verification. Program Lock Bits Protection Description Security level LB0 LB1 LB2 1 U U U No program lock features enabled. 2P U U MOVC instruction executed from external program memory are disabled from fetching code bytes from internal memory, EA is sampled and latched on reset, and further parallel programming of the Flash is disabled. ISP and software programming with API are still allowed. Writing EEprom Data from external parallel programmer is disabled but still allowed from internal code execution. 3U P U Same as 2, also verify through parallel programming interface is disabled. Writing And Reading EEPROM Data from external parallel programmer is disabled but still allowed from internal code execution.. 4 U U P Same as 3, also external execution is disabled |
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