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NXP Semiconductors Electronic Components Datasheet

PCA9502 Datasheet

8-bit I/O expander

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PCA9502
8-bit I/O expander with I2C-bus/SPI interface
Rev. 03 — 13 October 2006
Product data sheet
1. General description
www.2Da.taShFeeeta4Ut.ucormes
The PCA9502 is an 8-bit I/O expander with I2C-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.
2.1 General features
I Selectable I2C-bus or SPI interface
I 3.3 V or 2.5 V operation
I Industrial temperature range: 40 °C to +85 °C
I Eight programmable I/O pins
I Software reset
I Industrial and commercial temperature ranges
I Available in HVQFN24 package
I 16 hardware-selectable slave addresses
2.2 I2C-bus features
I Noise filter on SCL/SDA inputs
I 400 kbit/s (maximum)
I Compliant with I2C-bus Fast-mode
I 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


NXP Semiconductors Electronic Components Datasheet

PCA9502 Datasheet

8-bit I/O expander

No Preview Available !

NXP Semiconductors
PCA9502
8-bit I/O expander with I2C-bus/SPI interface
4. Ordering information
Table 1. Ordering information
Type number Package
Name
Description
Version
PCA9502BS
HVQFN24 plastic thermal enhanced very thin quad flat package; SOT616-3
no leads; 24 terminals; body 4 × 4 × 0.85 mm
5. Block diagram
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VDD
RESET
SCL
SDA
A0
A1
IRQ
1 k(3.3 V)
1.5 k(2.5 V)
PCA9502
I2C-BUS
VDD
VDD
I2C/SPI
GPIO
REGISTER
VSS
002aab837
Fig 1. Block diagram of PCA9502 I2C-bus interface
8
GPIO[7:0]
VDD
RESET
SCLK
CS
SO
SI
IRQ
1 k(3.3 V)
1.5 k(2.5 V)
VDD
PCA9502
SPI
I2C/SPI
GPIO
REGISTER
VSS
Fig 2. Block diagram of PCA9502 SPI interface
002aab838
8
GPIO[7:0]
PCA9502_3
Product data sheet
Rev. 03 — 13 October 2006
© NXP B.V. 2006. All rights reserved.
2 of 25


Part Number PCA9502
Description 8-bit I/O expander
Maker NXP Semiconductors
Total Page 25 Pages
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