PIC12F1822-ISLASHMF datasheet(44/398 Pages) MICROCHIP

No. de pieza	PIC12F1822-I/MF

Descripción Electrónicos	8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology

PDF	398 Pages

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Fabricante Electrónico	MICROCHIP [Microchip Technology]

Página de inicio	http://www.microchip.com

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44 / 398 page

PIC12F/LF1822/16F/LF1823

DS41413A-page 44

Preliminary

 2010 Microchip Technology Inc.

FIGURE 3-5:

ACCESSING THE STACK EXAMPLE 2

FIGURE 3-6:

ACCESSING THE STACK EXAMPLE 3

0x0F

0x0E

0x0D

0x0C

0x0B

0x0A

0x09

0x08

0x07

0x06

0x05

0x04

0x03

0x02

0x01

Return Address

0x00

STKPTR = 0x00

This figure shows the stack configuration

after the first CALL or a single interrupt.

If a RETURN instruction is executed, the

return address will be placed in the

Program Counter and the Stack Pointer

decremented to the empty state (0x1F).

TOSH:TOSL

0x0F

0x0E

0x0D

0x0C

0x0B

0x0A

0x09

0x08

0x07

Return Address

0x06

Return Address

0x05

Return Address

0x04

Return Address

0x03

Return Address

0x02

Return Address

0x01

Return Address

0x00

STKPTR = 0x06

After seven CALLs or six CALLs and an

interrupt, the stack looks like the figure

on the left. A series of RETURN instructions

will repeatedly place the return addresses

into the Program Counter and pop the stack.

TOSH:TOSL

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