VRS550-QLC25 datasheet(6/40 Pages) ETC1

Part #	VRS550-QLC25

Description	VRS550 - 8kB Flash, 256B RAM, 25MHz, 8-Bit MCU VRS560 - 16kB Flash, 256B RAM, 25MHz, 8-Bit MCU

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VRS550 / VRS560

VERSA

Datasheet Rev 1.1

1134 Ste Catherine Street West, Suite 900, Montreal, Quebec, Canada H3B 1H4 Tel: (514) 871-2447 http://www.goalsemi.com

6

Special Function Registers (SFR)

Addresses 80h to FFh of the SFR address space can be accessed in direct addressing mode only. The following table

lists the VRS550 and VRS560 Special Function Registers.

TABLE 5: SPECIAL FUNCTION REGISTERS (SFR)

SFR

Register

SFR

Adrs

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reset Value

P0

80h

-

SP

81h

-

DPL

82h

-

DPH

83h

-

Reserved

84h

PCON

87h

SMOD

-

GF1

GF0

PDOWN

IDLE

00000000b

TCON

88h

TF1

TR1

TF0

TR0

IE1

IT1

IE0

IT0

00000000b

TMOD

89h

GATE1

C/T1

M1.1

M0.1

GATE0

C/T0

M1.0

M0.0

00000000b

TL0

8Ah

-

TL1

8Bh

-

TH0

8Ch

-

TH1

8Dh

-

P1

90h

-

SCON

98h

SM0

SM1

SM2

REN

TB8

RB8

TI

RI

00000000b

SBUF

99h

-

WDTCON

9Fh

WDTE

-

WDCLR

-

WDPS2

WDPS1

WDPS0

0*0**000b

P2

A0h

-

IE

A8h

EA

-

ET2

ES

ET1

EX1

ET0

EX0

00000000b

P3

B0h

-

IP

B8h

-

PT2

PS

PT1

PX1

PT0

PX0

00000000b

SYSCON

BFh

WDRESET

-

ALEI

0******0b

T2CON

C8h

TF2

EXF2

RCLK

TCLK

EXEN2

TR2

C/T2

CP/RL2

00000000b

RCAP2L

CAh

-

00000000b

RCAP2H

CBh

-

TL2

CCh

-

TH2

CDh

PSW

D0h

CY

AC

F0

RS1

RS0

OV

-

P

00000000b

ACC

E0h

-

B

F0h

-

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