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T89C51AC2-RLSI-M Datasheet(PDF) 49 Page - ATMEL Corporation

Part # T89C51AC2-RLSI-M
Description  8-bit MCU with 32K bytes Flash, 10 bits A/D and EEPROM
PDF  117 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T89C51AC2-RLSI-M Datasheet(HTML) 49 Page - ATMEL Corporation

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Draft.A - March 30, 2001
49
Preview - Confidential
T89C51AC2
10.6. XROW Bytes
Table 18. Xrow mapping
SBV register
Software Boot Vector
Default value after erasing chip: FFh
NOTE:
Only accessed by the API or in the parallel programming mode.
Figure 30. SBV Register
EB register
EXTRA BYTE
Default value after erasing chip: FFh
NOTE:
TOnly accessed by the API or in the parallel programming mode.
Figure 31. EB Register
Mnemonic
Description
Default value
Address
SBV
Boot Vector Address
F8h
01h
SSB
Software Security Byte
FFh
05h
EB
Extra Byte
FFh
06h
Copy of the Manufacturer Code
58h
30h
Copy of the Device ID#1: Family code
D7h
31h
Copy of the Device ID#2:Memories size and
type
F7h
60h
Copy of the Device ID#3:Name and Revision FFh
61h
7
6
5
4
3
2
1
0
ADD 7
ADD 6
ADD 5
ADD 4
ADD 3
ADD 2
ADD 1
ADD 0
Bit Number Bit Mnemonic
Description
7-0
ADD7:0
MSB of user boot loader address location
7
6
5
4
3
2
1
0
--------
Bit Number Bit Mnemonic
Description
7-0
-
User definition



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