Initialisierung:
------------------------------------------

void init_eeprom(void)
  {
  SPI_CS_EEPROM=0;
  SPI_WRITE(0b00000110);    // Write Enable
  SPI_CS_EEPROM=1;
  delay_ms(40);

  SPI_CS_EEPROM=0;
  SPI_WRITE(0b00000001);
  SPI_WRITE(0b00000010);    // Write Status Register
  SPI_CS_EEPROM=1;
  delay_ms(2);
  }




write- und read-funktionen:
-----------------------------------------------

void eeprom_write(int16 adresse,int8 wert)
  {
  int8 byte1,byte2;

  byte2=adresse;
  adresse>>=8;
  byte1=adresse;

  SPI_CS_EEPROM=0;
  SPI_WRITE(0x02);
  SPI_WRITE(byte1);
  SPI_WRITE(byte2);
  SPI_WRITE(wert);
  SPI_CS_EEPROM=1;
  }


int8 eeprom_read(int16 adresse)
  {
  int8 wert,byte1,byte2;
  byte2=adresse;
  adresse>>=8;
  byte1=adresse;
  SPI_CS_EEPROM=0;
  SPI_WRITE(0x03);
  SPI_WRITE(byte1);
  SPI_WRITE(byte2);
  wert=SPI_READ();
  SPI_CS_EEPROM=1;
  return wert;
  }




Test-funktion:
--------------------------------------

int8 wert=0,wert_out,byte1,byte2;
int16 adresse;

  adresse=0x4369;
  wert_out=0x55;

  byte2=adresse;
  adresse>>=8;
  byte1=adresse;

  lcd_curs(cursor_off);
  lcd_putc("\fEEPROM-Test:");      // \f=desplay löschen!
  lcd_gotoxy(0,1);
  printf(lcd_putc,"Adresse: %2X%2X",byte1,byte2);
  eeprom_write(adresse,wert_out);
  wert=eeprom_read(adresse);
  lcd_gotoxy(0,2);
  printf(lcd_putc,"Wert: %2X",wert);