at89ls51-16si ATMEL Corporation, at89ls51-16si Datasheet - Page 7
at89ls51-16si
Manufacturer Part Number
at89ls51-16si
Description
At89ls51, Low-voltage Microcontroller With 4k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89LS51-16SI.pdf
(32 pages)
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Table 5-1.
User software should not write 1s to these unlisted locations, since they may be used in future products to invoke new fea-
tures. In that case, the reset or inactive values of the new bits will always be 0.
Interrupt Registers: The individual interrupt enable bits are in the IE register. Two priorities can be set for each of the five
interrupt sources in the IP register.
3053B–MICRO–3/05
0D8H
0D0H
0C8H
0C0H
0F8H
0F0H
0E8H
0E0H
0B8H
0B0H
0A8H
0A0H
98H
90H
88H
80H
XX000000
0X000000
00000000
00000000
00000000
11111111
11111111
00000000
11111111
00000000
11111111
SCON
TCON
PSW
ACC
P3
P2
P1
P0
IP
IE
B
AT89LS51 SFR Map and Reset Values
XXXXXXXX
00000000
00000111
TMOD
SBUF
SP
XXXXXXX0
00000000
00000000
AUXR1
DP0L
TL0
00000000
00000000
DP0H
TL1
00000000
00000000
DP1L
TH0
00000000
00000000
DP1H
TH1
XXXXXXXX
XXX00XX0
WDTRST
AUXR
AT89LS51
0XXX0000
PCON
0FFH
0F7H
0EFH
0E7H
0DFH
0D7H
0CFH
0C7H
0BFH
0B7H
0AFH
0A7H
9FH
97H
8FH
87H
7
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