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I/O Expander. PCA9534 Datasheet

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I/O Expander. PCA9534 Datasheet






PCA9534 Expander. Datasheet pdf. Equivalent




PCA9534 Expander. Datasheet pdf. Equivalent





Part

PCA9534

Description

Remote 8-Bit I2C and SMBus Low-Power I/O Expander



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9534 SCPS124G – SEPTEMB ER 2006 – REVISED JUNE 2014 PCA9534 R emote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Con figuration Registers 1 Features •1 L ow Standby Current Consumption of 1 μA Max • I2C to Parallel Port Expander • Open-Drain Active-Low Int.
Manufacture

Texas Instruments

Datasheet
Download PCA9534 Datasheet


Texas Instruments PCA9534

PCA9534; errupt Output • Operating Power-Supply Voltage Range of 2.3 V to 5.5 V • 5- V Tolerant I/O Ports • 400-kHz Fast I 2C Bus • Three Hardware Address Pins Allow up to Eight Devices on the I2C/SM Bus • Allows Up to 16 Devices on the I2C/SMBus When Used in Conjunction with the PCA9534A See Device Comparison Tab le for I2C Expander offerings • Input /Output Configuration Register.


Texas Instruments PCA9534

• Polarity Inversion Register • Int ernal Power-On Reset • Power-Up With All Channels Configured as Inputs • N o Glitch on Power Up • Noise Filter o n SCL/SDA Inputs • Latched Outputs Wi th High-Current Drive Maximum Capabilit y for Directly Driving LEDs • Latch-U p Performance Exceeds 100 mA Per JESD 7 8, Class II • ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model .


Texas Instruments PCA9534

(A114-A) – 200-V Machine Model (A115-A ) – 1000-V Charged-Device Model (C101 ) 2 Description This 8-bit I/O expande r for the two-line bidirectional bus (I 2C) is designed for 2.3-V to 5.5-V VCC operation. It provides general-purpose remote I/O expansion for most microcont roller families via the I2C interface [ serial clock (SCL), serial data (SDA)]. The PCA9534 consists .

Part

PCA9534

Description

Remote 8-Bit I2C and SMBus Low-Power I/O Expander



Feature


Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9534 SCPS124G – SEPTEMB ER 2006 – REVISED JUNE 2014 PCA9534 R emote 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Con figuration Registers 1 Features •1 L ow Standby Current Consumption of 1 μA Max • I2C to Parallel Port Expander • Open-Drain Active-Low Int.
Manufacture

Texas Instruments

Datasheet
Download PCA9534 Datasheet




 PCA9534
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
PCA9534
SCPS124G – SEPTEMBER 2006 – REVISED JUNE 2014
PCA9534 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 PCA9534A
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 PCA9534 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 PCA9534 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 PCA9534 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SSOP (16)
6.20 mm × 5.30 mm
PCA9534
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, 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.




 PCA9534
PCA9534
SCPS124G – 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 ....................... 23
10.1 Typical Application ............................................... 23
11 Power Supply Recommendations ..................... 25
11.1 Power-On Reset Requirements ........................... 25
11.2 Power-On Reset Errata......................................... 26
12 Device and Documentation Support ................. 27
12.1 Trademarks ........................................................... 27
12.2 Electrostatic Discharge Caution ............................ 27
12.3 Glossary ................................................................ 27
13 Mechanical, Packaging, and Orderable
Information ........................................................... 27
3 Revision History
Changes from Revision F (June 2010) to Revision G
Page
• Added Interrupt Errata section.............................................................................................................................................. 17
• Added Power-On Reset Errata section. ............................................................................................................................... 26
2 Submit Documentation Feedback
Product Folder Links: PCA9534
Copyright © 2006–2014, Texas Instruments Incorporated




 PCA9534
www.ti.com
PCA9534
SCPS124G – SEPTEMBER 2006 – REVISED JUNE 2014
4 Description (Continued)
INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the
remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via
the I2C bus. Thus, the PCA9534 can remain a simple slave device.
The device's outputs (latched) have high-current drive capability for directly driving LEDs. It has low current
consumption.
Three hardware pins (A0, A1, and A2) are used to program and vary the fixed I2C address and allow up to eight
devices to share the same I2C bus or SMBus.
The PCA9534 is pin-to-pin and I2C address compatible with the PCF8574. However, software changes are
required due to the enhancements in the PCA9534 over the PCF8574.
The PCA9534 is a low-power version of the PCA9554. The only difference between the PCA9534 and PCA9554
is that the PCA9534 eliminates an internal I/O pullup resistor, which dramatically reduces power consumption in
the standby mode when the I/Os are held low.
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.
Copyright © 2006–2014, Texas Instruments Incorporated
Product Folder Links: PCA9534
Submit Documentation Feedback
3



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