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T89C51AC2-RLSI-M 数据表(PDF) 37 Page - ATMEL Corporation

部件名 T89C51AC2-RLSI-M
功能描述  8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM
PDF  117 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

T89C51AC2-RLSI-M 数据表(HTML) 37 Page - ATMEL Corporation

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Draft.A - March 30, 2001
37
Preview - Confidential
T89C51AC2
AUXR1 (S:A2h)
Auxiliary Control Register 1.
Reset Value= XXXX 00X0b
Figure 25. AUXR1 Register
7
6
5
4
3
2
1
0
-
-
ENBOOT
-
GF3
0
-
DPS
Bit Number Bit Mnemonic
Description
7-6
-
Reserved
The value read from these bits is indeterminate. Do not set these bits.
5
ENBOOT
Enable Boot Flash
Set this bit for map the boot flash between F800h -FFFFh
Clear this bit for disable boot flash.
4-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3
GF3
General Purpose Flag 3.
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.
0
DPS
Data Pointer Select Bit
Set to select second dual data pointer: DPTR1.
Clear to select first dual data pointer: DPTR0.



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