C517A_99 Datasheet, PDF(38/218 Page) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

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C517A_99 Datasheet, PDF (38/218 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

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C517A

Table 3-1

Special Function Registers - Functional Blocks

Block Symbol Name

Address Contents after

Reset

CPU

ACC

B

DPH

DPL

DPSEL

PSW

SP

Accumulator

B-Register

Data Pointer, High Byte

Data Pointer, Low Byte

Data Pointer Select Register

Program Status Word Register

Stack Pointer

E0H 1)

F0H 1)

83H

82H

92H

D0H 1)

81H

00H

00H

00H

00H

XXXX X000B 3)

00H

07H

A/D-

Converter

ADCON0 2)

ADCON1

ADDATH

ADDATL

A/D Converter Control Register 0

A/D Converter Control Register 1

A/D Converter Data Register, High Byte

A/D Converter Data Register, Low Byte

D8H 1)

DCH

D9H

DAH

00H

0XXX 0000B 3)

00H

00XX XXXXB 3

Interrupt

System

IEN0 2)

IEN1 2)

IEN2

IP0 2)

IP1

IRCON0 2)

IRCON1

TCON 2)

T2CON 2)

S0CON 2)

S1CON 2)

CTCON 2)

Interrupt Enable Register 0

Interrupt Enable Register 1

Interrupt Enable Register 2

Interrupt Priority Register 0

Interrupt Priority Register 1

Interrupt Request Control Register 0

Interrupt Request Control Register 1

Timer 0/1 Control Register

Timer 2 Control Register

Serial Channel 0 Control Register

Serial Channel ! Control Register

Compare Timer Control Register

A8H 1)

B8H 1)

9AH

A9H

B9H

C0H 1)

D1H

88H 1)

C8H 1)

98H 1)

9BH

E1H

00H

00H

XX00 00X0B 3)

00H

XX00 0000B 3)

00H

00H

00H

00H

00H

0X00 0000B 3)

0X00 0000B 3)

MUL/DIV

Unit

ARCON

MD0

MD1

MD2

MD3

MD4

MD5

Arithmetic Control Register

Multiplication/Division Register 0

Multiplication/Division Register 1

Multiplication/Division Register 2

Multiplication/Division Register 3

Multiplication/Division Register 4

Multiplication/Division Register 5

EFH

E9H

EAH

EBH

ECH

EDH

EEH

0XXXXXXXB 3)

XXH 3)

XXH 3)

XXH 3)

XXH 3)

XXH 3)

XXH 3)

Timer 0 /

Timer 1

TCON 2)

TH0

TH1

TL0

TL1

TMOD

Timer 0/1 Control Register

Timer 0, High Byte

Timer 1, High Byte

Timer 0, Low Byte

Timer 1, Low Byte

Timer Mode Register

88H 1)

00H

8CH

00H

8DH

00H

8AH

00H

8BH

00H

89H

00H

1) Bit-addressable special function registers

2) This special function register is listed repeatedly since some bits of it also belong to other functional blocks.

3) âXâ means that the value is undefined and the location is reserved

Semiconductor Group

3-12

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