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T89C51AC2-RLSI-M 数据表(PDF) 40 Page - ATMEL Corporation |
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T89C51AC2-RLSI-M 数据表(HTML) 40 Page - ATMEL Corporation |
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40 / 117 page  40 Draft.A - March 30, 2001 Preview - Confidential T89C51AC2 9.5. Registers EECON (S:0D2h) EEPROM Control Register Reset Value= XXXX XX00b Not bit addressable Figure 26. EECON Register 7 6 5 4 3 2 1 0 EEPL3 EEPL2 EEPL1 EEPL0 - - EEE EEBUSY Bit Number Bit Mnemonic Description 7-4 EEPL3-0 Programming Launch command bits Write 5Xh followed by AXh to EEPL to launch the programming. 3- Reserved The value read from this bit is indeterminate. Do not set this bit. 2- Reserved The value read from this bit is indeterminate. Do not set this bit. 1 EEE Enable EEPROM Space bit Set to map the EEPROM space during MOVX instructions (Write in the column latches) Clear to map the XRAM space during MOVX. 0 EEBUSY Programming Busy flag Set by hardware when programming is in progress. Cleared by hardware when programming is done. Can not be set or cleared by software. |
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