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AT89C5131A-RDTUM Datasheet(PDF) 22 Page - ATMEL Corporation

Part # AT89C5131A-RDTUM
Description  8-bit Flash Microcontroller with Full Speed USB Device
PDF  188 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5131A-RDTUM Datasheet(HTML) 22 Page - ATMEL Corporation

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22
4337K–USB–04/08
AT89C5130A/31A-M
The Special Function Registers (SFRs) of the AT89C5131 fall into the following categories:
Table 6-2.
C51 Core SFRs
Table 6-3.
I/O Port SFRs
Mnemonic
Add
Name
7
6
5
4
3
2
1
0
ACC
E0h
Accumulator
B
F0h
B Register
PSW
D0h
Program Status
Word
SP
81h
Stack Pointer
LSB of SPX
DPL
82h
Data Pointer
Low byte
LSB of DPTR
DPH
83h
Data Pointer
High byte
MSB of DPTR
Mnemonic
Add
Name
7
6
5
4
3
2
1
0
P0
80h
Port 0
P1
90h
Port 1
P2
A0h
Port 2
P3
B0h
Port 3
P4
C0h
Port 4 (2bits)
Table 6-4.
Timer SFR’s
Mnemonic
Add
Name
7
6
5
4
3
2
1
0
TH0
8Ch
Timer/Counter 0 High byte
TL0
8Ah
Timer/Counter 0 Low byte
TH1
8Dh
Timer/Counter 1 High byte
TL1
8Bh
Timer/Counter 1 Low byte
TH2
CDh
Timer/Counter 2 High byte
TL2
CCh
Timer/Counter 2 Low byte
TCON
88h
Timer/Counter 0 and 1
control
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
TMOD
89h
Timer/Counter 0 and 1
Modes
GATE1
C/T1#
M11
M01
GATE0
C/T0#
M10
M00
T2CON
C8h
Timer/Counter 2 control
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2#
CP/RL2#
T2MOD
C9h
Timer/Counter 2 Mode
T2OE
DCEN



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