SW500009 Microchip Technology, SW500009 Datasheet - Page 199

• Manufacturer Part Number: SW500009
• Description: HI-TECH FOR DSPIC/PIC24
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC24 & DsPICr

Specifications of SW500009

• Supported Families: PIC24
• Core Architecture: PIC, DsPIC
• Software Edition: Standard
• Kit Contents: Software And Docs
• Tool Type: Compiler
• Mcu Supported Families: PIC24 MCUs And DsPIC DSCs
• Lead Free Status / RoHS Status: Not applicable / RoHS Compliant
• For Use With/related Products: DSPIC3X/PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 025; 778-1003; 778-1003

Library Functions
EEPROM_READ, EEPROM_WRITE
Synopsis
Description
These function allow access to the on-chip eeprom (when present). The eeprom is not in the directly-
accessible memory space and a special byte sequence is loaded to the eeprom control registers to
access the device. Writing a value to the eeprom is a slow process and the eeprom_write() function
polls the appropriate registers to ensure that any previous writes have completed before writing the
next datum. Reading data is completed in the one cycle and no polling is necessary to check for a
read completion.
Example
Note
It may be necessary to poll the eeprom registers to ensure that the write has completed if an eep-
rom_write() call is immediately followed by an eeprom_read(). The global interrupt enable bit
(GIE) is now restored by the eeprom_write() routine. The EEIF interrupt flag is not reset by this
function.
#include <htc.h>
unsigned char eeprom_read (unsigned char addr);
void eeprom_write (unsigned char addr, unsigned char value);
#include <htc.h>
void
main (void)
{
}
unsigned char data;
unsigned char address;
address = 0x10;
data = eeprom_read(address);
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