Philips Semiconductors
Product specification
128 × 8-bit EEPROM with I2C-bus interface
PCA8581; PCA8581C
12.2 Slave address
The PCA8581 has a fixed combination 1 0 1 0 as group 1, while group 2 is fully programmable (see Fig.13).
handbook, halfpage
1
0
1
0
A2 A1 A0 R/W
group 2
group 1
MLB892
Fig.13 Slave address.
12.3 Diode protection
handbook, halfpage
V
A0
A1
A2
DD
TEST
SCL
V
SDA
SS
substrate
MLB894
There is no connection between SCL and VDD, and SDA and VDD; this allows powering down the device without affecting I2C-bus operation.
Fig.14 Device diode protection.
1997 Apr 02
13