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PIC24FJ128GL303 bảng dữ liệu(PDF) 63 Page - Microchip Technology

tên linh kiện PIC24FJ128GL303
Giải thích chi tiết về linh kiện  16-Bit eXtreme Low-Power Microcontrollers with LCD Controller in Low Pin Count Packages
PDF  424 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC24FJ128GL303 bảng dữ liệu(HTML) 63 Page - Microchip Technology

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 2019-2020 Microchip Technology Inc.
DS30010198B-page 63
PIC24FJ128GL306 FAMILY
TABLE 6-1:
EXAMPLE PAGE ERASE
EXAMPLE 6-1:
ERASING A PROGRAM MEMORY BLOCK (‘C’ LANGUAGE CODE)
Step 1: Set the NVMCON register to erase a page.
MOV
#0x4003, W0
MOV
W0, NVMCON
Step 2: Load the address of the page to be erased into the NVMADRU/NVMADR register pair.
MOV
#PAGE_ADDR_LO, W0
MOV
W0, NVMADR
MOV
#PAGE_ADDR_HI, W0
MOV
W0, NVMADRU
Step 3: Set the WR bit.
MOV
#0x55, W0
MOV
W0, NVMKEY
MOV
#0xAA, W0
MOV
W0, NVMKEY
BSET
NVMCON, #WR
NOP
NOP
NOP
// C example using MPLAB XC16
unsigned
long progAddr = 0xXXXXXX;
// Address of row to write
unsigned
int
offset;
//Set up pointer to the first memory location to be written
NVMADRU = progAddr>>16;
// Initialize PM Page Boundary SFR
NVMADR
= progAddr & 0xFFFF;
// Initialize lower word of address
NVMCON
= 0x4003;
// Initialize NVMCON
asm("DISI #5");
// Block all interrupts with priority <7
// for next 5 instructions
__builtin_write_NVM();
// check function to perform unlock
// sequence and set WR



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