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PCA9555 Datasheet(PDF) 4 Page - NXP Semiconductors |
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PCA9555 Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 22 page ![]() Philips Semiconductors Product data sheet PCA9555 16-bit I2C and SMBus I/O port with interrupt 2004 Sep 30 4 BLOCK DIAGRAM POWER-ON RESET INPUT FILTER I2C/SMBUS CONTROL INPUT/ OUTPUT PORTS WRITE pulse READ pulse A0 A1 A2 SCL SDA VDD VSS 8-BIT I/O0.0 I/O0.1 I/O0.2 I/O0.3 I/O0.4 I/O0.5 I/O0.6 I/O0.7 SU01439 NOTE: ALL I/Os ARE SET TO INPUTS AT RESET VINT INT 8-BIT INPUT/ OUTPUT PORTS I/O1.0 I/O1.1 I/O1.2 I/O1.3 I/O1.4 I/O1.5 I/O1.6 I/O1.7 WRITE pulse READ pulse LP FILTER PCA9555 Figure 3. Block diagram |