AT80C31X2(2008) 데이터 시트보기 (PDF) - Atmel Corporation

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AT80C31X2
(Rev.:2008)

8-bit CMOS Microcontroller ROMless

Atmel Corporation 

AT/TS80C31X2

4. SFR Mapping

The Special Function Registers (SFRs) of the TS80C31X2 fall into the following categories:

Table 4-1.

• C51 core registers: ACC, B, DPH, DPL, PSW, SP, AUXR1

• I/O port registers: P0, P1, P2, P3

• Timer registers: TCON, TH0, TH1, TMOD, TL0, TL1

• Serial I/O port registers: SADDR, SADEN, SBUF, SCON

• Power and clock control registers: PCON

• Interrupt system registers: IE, IP, IPH

• Others: CKCON

All SFRs with their address and their reset value

Bit

addressable

Non Bit addressable

0/8

1/9

2/A

3/B

4/C

5/D

6/E

7/F

F8h

FFh

F0h

B

0000 0000

F7h

E8h

EFh

E0h

ACC

0000 0000

E7h

D8h

DFh

D0h

PSW

0000 0000

D7h

C8h

CFh

C0h

C7h

IP

B8h

XXX0 0000

P3

B0h

1111 1111

IE

A8h

0XX0 0000

P2

A0h

1111 1111

SCON

98h

0000 0000

P1

90h

1111 1111

TCON

88h

0000 0000

P0

80h

1111 1111

0/8

Reserved

SADEN

0000 0000

SADDR

0000 0000

SBUF

XXXX XXXX

AUXR1

XXXX XXX0

TMOD

0000 0000

SP

0000 0111

1/9

TL0

0000 0000

DPL

0000 0000

2/A

TL1

0000 0000

DPH

0000 0000

3/B

TH0

0000 0000

4/C

TH1

0000 0000

5/D

BFh

IPH

XXX0 0000

B7h

AFh

A7h

9Fh

97h

CKCON

8Fh

XXXX XXX0

PCON

87h

00X1 0000

6/E

7/F

3

4428E–8051–02/08

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