Manual

59
AT89C5131
4136A–USB–03/03
XROW Bytes Table 44. XRow Mapping
Notes: 1. Default value after erasing chip: FFh
2. Only accessed by the API or in the parallel programming mode.
Notes: 1. Default value after erasing chip: FFh
2. Only accessed by the API or in the parallel programming mode.
Mnemonic Description Default Value Address
BSB Boot Status Byte 00h
SBV Software Boot Vector F4h 01h
P1_CF FFh 02h
P3_CF FFh 03h
P4_CF FFh 04h
SSB Software Security Byte FFh 05h
EB Extra Byte FFh 06h
reserved 07h-2Fh
Manufacturer Code 58h 30h
ID1 Device ID#1: Family code D7h 31h
reserved 32h-5Fh
ID2 Device ID#2: Memories size and type F7h 60h
ID3 Device ID#3: Name and Revision DFh 61h
reserved 62h-7Fh
Table 45. SBV Register
Software Boot Vector
76543210
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 bootloader address location
Table 46. EB Register
EXTRA BYTE
76543210
--------
Bit Number
Bit
Mnemonic Description
7 - 0 - User definition