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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AT89C51SND1C-ROTIL 데이터시트(PDF) 21 Page - ATMEL Corporation |
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AT89C51SND1C-ROTIL 데이터시트(HTML) 21 Page - ATMEL Corporation |
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21 / 210 page  21 AT8xC51SND1C 4109E–8051–06/03 Registers Table 21. AUXR1 Register AUXR1 (S:A2h) – Auxiliary Register 1 Reset Value = XXXX 00X0b Note: 1. ENBOOT bit is only available in AT89C51SND1C product. 7654 3210 - - ENBOOT - GF3 0 - DPS Bit Number Bit Mnemonic Description 7 - 6 - Reserved The value read from these bits are indeterminate. Do not set these bits. 5 ENBOOT1 Enable Boot Flash Set this bit to map the boot Flash in the code space between at addresses F000h to FFFFh. Clear this bit to disable boot Flash. 4- Reserved The value read from this bit is indeterminate. Do not set this bit. 3GF3 General Flag This bit is a general-purpose user flag. 20 Always Zero This bit is stuck to logic 0 to allow INC AUXR1 instruction without affecting GF3 flag. 1- Reserved for Data Pointer Extension. 0DPS Data Pointer Select Bit Set to select second data pointer: DPTR1. Clear to select first data pointer: DPTR0. |
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