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PIC16F15213 датащи(PDF) 34 Page - Microchip Technology

номер детали PIC16F15213
подробное описание детали  PIC16F15213/14/23/24/43/44 Low Pin Count Microcontrollers
PDF  439 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F15213 датащи(HTML) 34 Page - Microchip Technology

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Figure 9-2. Program Memory and Stack (PIC16F152x4)
Filename:
Figure 4-2 Memory Map and Stack (4k).vsdx
Title:
Last Edit:
1/23/2020
First Used:
Notes:
Rev. Figure 4-2
1/23/2020
PC[14:0]
Stack Level 0
Stack Level 1
Stack Level 15
Reset Vector
Interrupt Vector
On-chip
Program
Memory
Unimplemented
0000h
0004h
0005h
0FFFh
1000h
7FFFh
15
CALL, CALLW
RETURN, RETLW
Interrupt, RETFIE
9.1.1
Reading Program Memory as Data
There are three methods of accessing constants in program memory. The first method is to use tables of RETLW
instructions, the second, to set an FSR to point to the program memory, and the third is to use the NVMREG interface
to access the program memory.
9.1.1.1
RETLW Instruction
The RETLW instruction can be used to provide access to tables of constants. The recommended way to create such a
table is shown in the following example.
Example 9-1. Accessing Table of Constants Using the RETLW Instruction
constants
BRW
;Add Index in W to
;program counter to
;select data
RETLW DATA0
;Index0 data
PIC16F15213/14/23/24/43/44
Memory Organization
© 2020-2022 Microchip Technology Inc.
and its subsidiaries
Data Sheet
DS40002195E-page 34



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