PIC16F505 datasheet(21/98 Pages) MICROCHIP

21 / 98 page

 2004 Microchip Technology Inc.

Preliminary

DS41236A-page 19

PIC12F508/509/16F505

TABLE 4-2:

SPECIAL FUNCTION REGISTER (SFR) SUMMARY (PIC16F505)

Address

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on

Power-On

Reset(2)

Page #

00h

INDF

Uses Contents of FSR to Address Data Memory (not a physical

xxxx xxxx

01h

TMR0

8-bit Real-Time Clock/Counter

xxxx xxxx

02h(1)

PCL

Low-order 8 bits of PC

1111 1111

03h

STATUS

RBWUF

—PA0

0-01 1xxx

04h

FSR

Indirect Data Memory Address Pointer

110x xxxx

05h

OSCCAL

CAL6

CAL5

CAL4

CAL3

CAL2

CAL1

CAL0

—

1111 111-

06h

PORTB

—

RB5

RB4

RB3

RB2

RB1

RB0

--xx xxxx

07h

PORTC

—

RC5

RC4

RC3

RC2

RC1

RC0

--xx xxxx

N/A

TRISB

—

I/O Control Register

--11 1111

N/A

TRISC

—

I/O Control Register

--11 1111

N/A

OPTION

RBWU

RBPU

TOCS

TOSE

PSA

PS2

PS1

PS0

1111 1111

Legend: — = unimplemented, read as ‘0’, x = unknown, u = unchanged, q = value depends on condition.

Note 1:

If Reset was due to wake-up on pin change, then bit 7 = 1. All other Resets will cause bit 7 = 0.

Other (non Power-up) Resets include external reset through MCLR, Watchdog Timer and wake-up on pin

change Reset.

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