
106
AT89C51RB2/RC2
4180E–8051–10/06
PROGRAM X2 FUSE
0Ah
Fuse value
00h or 01h
0008h
XXh
none
Program X2 fuse bit with ACC
PROGRAM BLJB
FUSE
0Ah
Fuse value
00h or 01h
0004h
XXh
none
Program BLJB fuse bit with ACC
READ HSB
0Bh
XXh
XXXXh
XXh
ACC = HSB
Read Hardware Byte
READ BOOT ID1
0Eh
XXh
DPL = 00h
XXh
ACC = ID1
Read boot ID1
READ BOOT ID2
0Eh
XXh
DPL = 01h
XXh
ACC = ID2
Read boot ID2
READ BOOT VERSION
0Fh
XXh
XXXXh
XXh
ACC = Boot_Version
Read bootloader version
Table 74. API Call Summary (Continued)
Command
R1
A
DPTR0
DPTR1
Returned Value
Command Effect