PIC16F690-ISLASHSSSQTP datasheet(27/294 Pages) MICROCHIP

Part #	PIC16F690-I/SSSQTP

Description	20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PDF	294 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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27 / 294 page

DS41262D-page 25

PIC16F631/677/685/687/689/690

2.0

MEMORY ORGANIZATION

2.1

Program Memory Organization

The PIC16F631/677/685/687/689/690 has a 13-bit

program counter capable of addressing an 8K x 14

program memory space. Only the first 1K x 14

(0000h-03FFh) is physically implemented for the

PIC16F631, the first 2K x 14 (0000h-07FFh) for the

PIC16F677/PIC16F687,

and

the

first

4K x 14

(0000h-0FFFh) for the PIC16F685/PIC16F689/

PIC16F690.

Accessing

location

above

these

boundaries will cause a wraparound. The Reset vector

is at 0000h and the interrupt vector is at 0004h (see

Figures 2-1 through 2-3).

FIGURE 2-1:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16F631

FIGURE 2-2:

PROGRAM MEMORY MAP

AND STACK FOR THE

PIC16F685/689/690

PC<12:0>

0000h

0004h

0005h

03FFh

0400h

1FFFh

Stack Level 1

Stack Level 8

Reset Vector

Interrupt Vector

On-chip Program

Memory

CALL, RETURN

RETFIE, RETLW

Stack Level 2

Access 0-3FFh

PC<12:0>

0000h

0004h

0005h

0FFFh

1000h

1FFFh

Stack Level 1

Stack Level 8

Reset Vector

Interrupt Vector

On-chip Program

Memory

CALL, RETURN

RETFIE, RETLW

Stack Level 2

Access 0-FFFh

PIC16F690-I/SSSQTP Datasheet(PDF) 27 Page - Microchip Technology

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