PCA9502
8-bit I/O expander with I
2
C-bus/SPI interface
Rev. 03 鈥?13 October 2006
Product data sheet
1. General description
The PCA9502 is an 8-bit I/O expander with I
2
C-bus/SPI host interface. The device comes
in a very small HVQFN24 package, which makes it ideally suitable for hand-held, battery
operated applications.
The device also supports software reset, which allows the host to reset the device at any
time, independent of the hardware reset signal.
2. Features
2.1 General features
I
I
I
I
I
I
I
I
Selectable I
2
C-bus or SPI interface
3.3 V or 2.5 V operation
Industrial temperature range:
鈭?0 擄C
to +85
擄C
Eight programmable I/O pins
Software reset
Industrial and commercial temperature ranges
Available in HVQFN24 package
16 hardware-selectable slave addresses
2.2 I
2
C-bus features
I
I
I
I
Noise 鏗乴ter on SCL/SDA inputs
400 kbit/s (maximum)
Compliant with I
2
C-bus Fast-mode
Slave mode only
2.3 SPI features
I
15 Mbit/s maximum speed
I
Slave mode only
I
SPI Mode 0
3. Applications
I
Factory automation and process control
I
Portable and battery operated devices
I
Cellular data devices