AT89C51CC03U-RDTIM datasheet(55/195 Pages) ATMEL

部品番号	AT89C51CC03U-RDTIM

部品情報	Enhanced 8-bit MCU with CAN Controller and Flash Memory

PDF	195 Pages

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メーカー	ATMEL [ATMEL Corporation]

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AT89C51CC03

4182I–CAN–06/05

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

No program lock features enabled.

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.

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..

Same as 3, also external execution is disabled

AT89C51CC03U-RDTIM データシート(PDF) 55 Page - ATMEL Corporation