C504 Datasheet, PDF(15/49 Page) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

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C504 Datasheet, PDF (15/49 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

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C504

Table 2

Special Function Registers - Functional Blocks

Block

Symbol Name

Address Contents after

Reset

CPU

ACC

B

DPH

DPL

PSW

SP

SYSCON

Accumulator

B-Register

Data Pointer, High Byte

Data Pointer, Low Byte

Program Status Word Register

Stack Pointer

System Control Register

E0H 1)

F0H 1)

83H

82H

D0H 1)

81H

B1H

00H

00H

00H

00H

00H

07H

XX10XXX0B 3)

Interrupt

System

IEN0

IEN1

CCIE 2)

IP0

IP1

ITCON

Interrupt Enable Register 0

Interrupt Enable Register 1

Capture/Compare Interrupt Enable Reg.

Interrupt Priority Register 0

Interrupt Priority Register 1

Interrupt Trigger Condition Register

A8H1)

A9H

D6H

B8H 1)

B9H

9AH

0X000000B 3)

XX000000B 3)

00H

XX000000B 3)

XX000000B 3)

00101010B

Ports

P0

P1

P1ANA 2)

P2

P3

P3ANA 2)

Port 0

Port 1

Port 1 Analog Input Selection Register

Port 2

Port 3

Port 3 Analog Input Selection Register

80H 1)

90H 1)

90H 1) 4)

A0H 1)

B0H 1)

B0H 1) 4)

FFH

FFH

XXXX1111B 3)

FFH

FFH

XX1111XXB 3)

A/D-

Converter

ADCON0 A/D Converter Control Register 0

ADCON1 A/D Converter Control Register 1

ADDATH A/D Converter Data Register High Byte

ADDATL A/D Converter Data Register Low Byte

P1ANA 2) Port 1 Analog Input Selection Register

P3ANA 2) Port 3 Analog Input Selection Register

D8H 1

DCH

D9H

DAH

90H 4)

B0H 4)

XX000000B 3)

01XXX000B 3)

00H

00XXXXXXB 3)

XXXX1111B 3)

XX1111XXB 3)

Serial

Channels

PCON 2)

SBUF

SCON

Power Control Register

Serial Channel Buffer Register

Serial Channel Control Register

87H

99H

98H 1)

000X0000B

XXH 3)

00H

Timer 0/

Timer 1

TCON

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) X means that the value is undefined and the location is reserved

4) SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set.

Semiconductor Group

15

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