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4289A–8051–09/03<br />
Figure 44. Recommended EEPROM <strong>Data</strong> Write Sequence<br />
EEPROM <strong>Data</strong> Write<br />
Sequence<br />
EEBusy<br />
Cleared?<br />
Save & Disable IT<br />
EA= 0<br />
EEPROM <strong>Data</strong> Mapping<br />
EECON = 02h (EEE=1)<br />
<strong>Data</strong> Write<br />
DPTR= Address<br />
ACC= <strong>Data</strong><br />
Exec: MOVX @DPTR, A<br />
EEPROM Mapping<br />
EECON = 00h (EEE=0)<br />
Restore IT<br />
Last Byte<br />
to Load?<br />
<strong>AT89C51ID2</strong><br />
113