PIC16F54(2004) Просмотр технического описания (PDF) - Microchip Technology

Номер в каталоге

Компоненты Описание

производитель

PIC16F54
(Rev.:2004)

Flash-Based, 8-Bit CMOS Microcontroller Series

Microchip Technology 

PIC16F5X

3.2.2 SPECIAL FUNCTION REGISTERS

The Special Function Registers (SFR) are registers

used by the CPU and peripheral functions to control the

operation of the device (Table 3-1).

The Special Function Registers can be classified into

two sets. The Special Function Registers associated

with the “core” functions are described in this section.

Those related to the operation of the peripheral

features are described in the section for each

peripheral feature.

TABLE 3-1: SPECIAL FUNCTION REGISTER SUMMARY

Address Name

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Value on

Power-on

Reset

Details

on Page

N/A

TRIS

I/O Control Registers (TRISA, TRISB, TRISC, TRISD, TRISE) 1111 1111

29

N/A

OPTION

Contains control bits to configure Timer0 and Timer0/WDT

prescaler

--11 1111

18

00h

INDF

Uses contents of FSR to address data memory (not a physical xxxx xxxx

20

register)

01h

TMR0

02h

PCL(1)

Timer0 Module Register

Low order 8 bits of PC

xxxx xxxx

34

1111 1111

19

03h

STATUS

PA2 PA1 PA0 TO PD

Z

DC

C 0001 1xxx

17

04h

FSR(3)

Indirect data memory address pointer

111x xxxx

20

04h

FSR(4)

Indirect data memory address pointer

1xxx xxxx

20

04h

FSR(5)

Indirect data memory address pointer

xxxx xxxx

20

05h

PORTA(6)

—

—

— — RA3 RA2 RA1 RA0 ---- xxxx

29

06h

PORTB

RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 xxxx xxxx

29

07h

PORTC(2)

RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0 xxxx xxxx

29

08h

PORTD(7)

RD7 RD6 RD5 RD4 RD3 RD2 RD1 RD0 xxxx xxxx

29

09h

PORTE(6), (7) RE7 RE6 RE5 RE4 —

—

—

— xxxx ----

29

Legend: Shaded cells = unimplemented or unused, – = unimplemented, read as ‘0’ (if applicable), x = unknown,

u = unchanged

Note 1: The upper byte of the Program Counter is not directly accessible. See Section 3.5 “Program Counter”

for an explanation of how to access these bits.

2: File address 07h is a General Purpose Register on the PIC16F54.

3: PIC16F54 only.

4: PIC16F57 only.

5: PIC16F59 only.

6: Unimplemented bits are read as ‘0’s.

7: File address 08h and 09h are General Purpose Registers on the PIC16F54 and PIC16F57.

DS41213C-page 16

 2004 Microchip Technology Inc.

Share Link: