I/O Expander. PCA9534A Datasheet

PCA9534A Expander. Datasheet pdf. Equivalent

Part PCA9534A
Description Remote 8-BIT I2C and SMBus Low-Power I/O Expander
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PCA9534A
SCPS141I – SEPTEMBER 2006 – REVISED JUNE 2014
PCA9534A Remote 8-BIT I2C and SMBus Low-Power I/O Expander With Interrupt Output
And Configuration Registers
1 Features
1 Low Standby Current Consumption of 1 μA Max
• I2C to Parallel Port Expander
• Open-Drain Active-Low Interrupt Output
• Operating Power-Supply Voltage Range of 2.3 V
to 5.5 V
• 5-V Tolerant I/O Ports
• 400-kHz Fast I2C Bus
• Three Hardware Address Pins Allow Up to Eight
Devices on the I2C/SMBus
• Allows Up to 16 Devices on the I2C/SMBus When
Used in Conjunction with the PCA9534
See Device Comparison Table for I2C Expander
offerings
• Input/Output Configuration Register
• Polarity Inversion Register
• Internal Power-On Reset
• Power-Up With All Channels Configured as Inputs
• No Glitch on Power-Up
• Noise Filter on SCL/SDA Inputs
• Latched Outputs With High-Current Drive
Maximum Capability for Directly Driving LEDs
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
2 Description
This 8-bit I/O expander for the two-line bidirectional
bus (I2C) is designed for 2.3-V to 5.5-V VCC
operation. It provides general-purpose remote I/O
expansion for most microcontroller families via the I2C
interface [serial clock (SCL), serial data (SDA)].
The PCA9534A consists of one 8-bit configuration
(input or output selection), input port, output port, and
polarity inversion (active high or active low) register.
At power on, the I/Os are configured as inputs.
However, the system master can enable the I/Os as
either inputs or outputs by writing to the I/O
configuration bits. The data for each input or output is
kept in the corresponding input or output register. The
polarity of the input port register can be inverted with
the polarity inversion register. All registers can be
read by the system master.
The system master can reset the PCA9534A in the
event of a timeout or other improper operation by
utilizing the power-on reset feature, which puts the
registers in their default state and initializes the
I2C/SMBus state machine.
The PCA9534A open-drain interrupt (INT) output is
activated when any input state differs from its
corresponding input port register state and is used to
indicate to the system master that an input state has
changed.
The PCA9534A and PCA9534 are identical, except
for their fixed I2C address. This allows for up to 16 of
these devices (8 of each) on the same I2C bus.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SSOP (16)
6.20 mm × 5.30 mm
PCA9534A
VQFN (16)
4.00 mm × 4.00 mm
QFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
RGV PACKAGE
(TOP VIEW)
RGT PACKAGE
(TOP VIEW)
A0
A1
A2
P0
P1
P2
P3
GND
1
2
3
4
5
6
7
8
16 VCC
15 SDA
14 SCL
13 INT
12 P7
11 P6
10 P5
9 P4
16 15 14 13
A2 1
12 SCL
P0 2
11 INT
P1 3
10 P7
P2 4
9 P6
567 8
16 15 14 13
A2 1
12 SCL
P0 2
11 INT
P1 3
10 P7
P2 4
9 P6
567 8
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



PCA9534A
PCA9534A
SCPS141I – SEPTEMBER 2006 – REVISED JUNE 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Description ............................................................. 1
3 Revision History..................................................... 2
4 Description (Continued) ........................................ 3
5 Device Comparison Table..................................... 4
6 Pin Configuration and Functions ......................... 5
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ..................................... 6
7.2 Handling Ratings....................................................... 6
7.3 Recommended Operating Conditions....................... 6
7.4 Electrical Characteristics........................................... 7
7.5 I2C Interface Timing Requirements........................... 8
7.6 Switching Characteristics .......................................... 8
7.7 Typical Characteristics .............................................. 9
8 Parameter Measurement Information ................ 12
9 Detailed Description ............................................ 15
9.1 Functional Block Diagram ....................................... 15
9.2 Device Functional Modes........................................ 16
9.3 Programming........................................................... 17
10 Application And Implementation ....................... 24
10.1 Typical Application ............................................... 24
11 Power Supply Recommendations ..................... 26
11.1 Power-On Reset Requirements ........................... 26
11.2 Power-On Reset Errata......................................... 27
12 Device and Documentation Support ................. 28
12.1 Trademarks ........................................................... 28
12.2 Electrostatic Discharge Caution ............................ 28
12.3 Glossary ................................................................ 28
13 Mechanical, Packaging, and Orderable
Information ........................................................... 28
3 Revision History
Changes from Revision H (June 2010) to Revision I
Page
• Removed Ordering Information Table. ................................................................................................................................... 4
• Added Interrupt Errata section. ............................................................................................................................................ 17
• Deleted the 100 kΩ resistor at VCC....................................................................................................................................... 24
• Added Power-On Reset Errata section. ............................................................................................................................... 27
2 Submit Documentation Feedback
Product Folder Links: PCA9534A
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