Datasheet

PCA9535_PCA9535C_5 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 05 — 15 September 2008 3 of 31
NXP Semiconductors
PCA9535; PCA9535C
16-bit I
2
C-bus and SMBus, low power I/O port with interrupt
4. Block diagram
Remark: All I/Os are set to inputs at reset.
Fig 1. Block diagram of PCA9535; PCA9535C
PCA9535
PCA9535C
POWER-ON
RESET
002aac217
I
2
C-BUS/SMBus
CONTROL
INPUT
FILTER
SCL
SDA
V
DD
INPUT/
OUTPUT
PORTS
IO0_0
V
SS
8-bit
write pulse
read pulse
IO0_2
IO0_1
IO0_3
IO0_4
IO0_5
IO0_6
IO0_7
INPUT/
OUTPUT
PORTS
IO1_0
8-bit
write pulse
read pulse
IO1_2
IO1_1
IO1_3
IO1_4
IO1_5
IO1_6
IO1_7
INT
A1
A0
A2
V
DD