|
III - Adressage du PCF8574 |
III - Adressage du PCF8574 ( PCF8574A )
Tableau d'adressage des PCF8574
|
PCF8574 |
Adresse partie fixe |
Adresse sélection |
Mode |
Adresse en hexadécimal |
|||||
|
A6 |
A5 |
A4 |
A3 |
A2 |
A1 |
A0 |
R / W |
||
|
n° 1 off off off |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0x40 |
|
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0x41 |
|
|
n° 2 off off On |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
0x42 |
|
0 |
1 |
0 |
0 |
0 |
0 |
1 |
1 |
0x43 |
|
|
n° 3 off On off |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0x44 |
|
0 |
1 |
0 |
0 |
0 |
1 |
0 |
1 |
0x45 |
|
|
n° 4 off On On |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
0x46 |
|
0 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
0x47 |
|
|
n° 5 On off off |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0x48 |
|
0 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0x49 |
|
|
n° 6 On off On |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
0x4A |
|
0 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
0x4B |
|
|
n° 7 On On off |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0x4C |
|
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0x4D |
|
|
n° 8 On On On |
0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
0x4E |
|
0 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0x4F |
|
Tableau d'adressage des PCF8574A
|
PCF8574A |
Adresse partie fixe |
Adresse sélection |
Mode |
Adresse en hexadécimal |
|||||
|
A6 |
A5 |
A4 |
A3 |
A2 |
A1 |
A0 |
R / W |
||
|
n° 1 off off off |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0x70 |
|
0 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
0x71 |
|
|
n° 2 off off On |
0 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
0x72 |
|
0 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0x73 |
|
|
n° 3 off On off |
0 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0x74 |
|
0 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
0x75 |
|
|
n° 4 off On On |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
0x76 |
|
0 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
0x77 |
|
|
n° 5 On off off |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0x78 |
|
0 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
0x79 |
|
|
n° 6 On off On |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0x7A |
|
0 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
0x7B |
|
|
n° 7 On On off |
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0x7C |
|
0 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0x7D |
|
|
n° 8 On On On |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0x7E |
|
0 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0x7F |
|
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