AT89C5131-PLTIL ATMEL Corporation, AT89C5131-PLTIL Datasheet - Page 14
AT89C5131-PLTIL
Manufacturer Part Number
AT89C5131-PLTIL
Description
8-bit Flash Microcontroller with Full Speed USB Device
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C5131-PLTIL.pdf
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14
AT89C5131
The Special Function Registers (SFRs) of the AT89C5131 fall into the following
categories:
Table 14. C51 Core SFRs
Table 15. I/O Port SFRs
Mnemonic
Mnemonic
PSW
ACC
DPH
DPL
SP
P0
P1
P2
P3
P4
B
Add
Add
E0h
D0h
A0h
B0h
C0h
F0h
81h
82h
83h
80h
90h
Name
Accumulator
B Register
Program Status
Word
Stack Pointer
LSB of SPX
Data Pointer
Low byte
LSB of DPTR
Data Pointer
High byte
MSB of DPTR
Name
Port 0
Port 1
Port 2
Port 3
Port 4 (x2)
7
7
6
6
5
5
4
4
3
3
2
2
4136B–USB–09/03
1
1
0
0
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