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SX1509 Shifting GPIO: Datasheet, Pinout and Applications

IC GPIO EXPANDER I2C 16CH 28QFN SX1509 is the world’s lowest voltage level shifting GPIO with a led driver and keypad engine.

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Aug 16, 2021

Archer Belle

SX1509 GPIO Expander on Dragonboard 410c

 

IC GPIO EXPANDER I2C 16CH 28QFN

SX1509 is the world’s lowest voltage level shifting GPIO with a led driver and keypad engine. This article enforces datasheet, pinout, applications, and other details about SX1509.

SX1509BIULTRT

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SX1509 Pinout

SX1509 CAD Model

Symbol

 

Footprint

 

3D Model

SX1509 Description

The SX1509 is complete with an ultra-low voltage General Purpose parallels Input/Output (GPIO) expanders ideal for low power handheld battery-powered equipment. This device can also act as a level shifter to connect a microcontroller running at one voltage level to a component running at a different voltage level, thus eliminating the need for extra level translating circuits.

Specifications

Semtech Corporation SX1509BIULTRT technical specifications, attributes, parameters and parts with similar specifications to Semtech Corporation SX1509BIULTRT.

SX1509BIULTRT Tech Specifications

Semtech Corporation SX1509BIULTRT technical specifications, attributes, parameters and parts with similar specifications to Semtech Corporation SX1509BIULTRT.

Product Attribute Attribute Value
Factory Lead Time16 Weeks
MountSurface Mount
Mounting TypeSurface Mount
Package / Case28-UFQFN Exposed Pad
Number of Pins28Pins
Number of I/Os16I/Os
Operating Temperature-40°C~85°C
PackagingTape & Reel (TR)
Published2009
Pbfree Codeyes
Part StatusActive
Moisture Sensitivity Level (MSL)1 (Unlimited)
Product Attribute Attribute Value
Number of Terminations28Terminations
HTS Code8542.39.00.01
Voltage - Supply1.425V~3.6V
Terminal PositionQUAD
Number of Functions1Function
Supply Voltage3.3V
Terminal Pitch0.4mm
Base Part NumberSX150
Pin Count28
Output TypeOpen Drain, Push-Pull
InterfaceI2C
Clock Frequency400kHz
Product Attribute Attribute Value
Telecom IC TypeTELECOM CIRCUIT
Interrupt OutputYes
Current - Output Source/Sink8mA 15mA
FeaturesKeypad Controller, LED Output, POR
Length4mm
Height Seated (Max)0.6mm
Width4mm
Radiation HardeningNo
RoHS StatusRoHS Compliant
Lead FreeLead Free
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SX1509 Features

• 1.2V to 3.6V Low Operating Voltage with Dual Independent I/O Rails (VCC1, VCC2)

  1.  Enable Direct Level Shifting Between I/O Banks and Host Controller

• 5.5V Tolerant I/Os, Up to 15mA Output Sink on All I/Os (No Total Sink Current Limit)

• Integrated LED Driver for Enhanced Lighting

  1.  Intensity Control (256-step PWM)

  2.  Blink Control (224 On/Off values)

  3.  Breathing Control (224 Fade In/Out values)

• On-Chip Keypad Scanning Engine

  1.  Support Up to 8x8 Matrix (64 Keys)

  2.  Configurable Input Debouncer

• 8/16 Channels of True Bi-directional Style I/O

  1.  Programmable Pull-up/Pull-down

  2.  Push/Pull or Open-drain outputs

  3.  Programmable Polarity

• Open Drain Active Low Interrupt Output (NINT)

  1.  Bit Maskable

  2.  Programmable Edge Sensitivity

• Built-in Clock Management (Internal 2MHz Oscillator/External Clock Input, 7 clock values)

  1.  OSCIO can be Configured as GPO

• 400kHz I2C Compatible Slave Interface

• 4 User-Selectable I²C Slave Addresses

• Power-On Reset and Reset Input (NRESET)

• Ultra Low Current Consumption: 1uA Typ

• -40°C to +85°C Operating Temperature Range

• Up to 2kV HBM ESD Protection

• Small Footprint Packages

• Pb & Halogen Free, RoHS/WEEE compliant

 

SX1509 Block Diagram

SX1509 Applications

•    Cell phones, PDAs, MP3 players

•    Digital camera, Notebooks, GPS Units

•    Any battery-powered equipment

SX1509 Circuit

SX1509 Dimension

SX1509 Manufacturer

Semtech Corporation is a leading supplier of high-performance analog and mixed-signal semiconductor platforms and advanced algorithms. We are dedicated to providing proprietary platforms, differentiated by innovation, size, efficiency, performance, and reach. Our solutions are used in some of the most innovative systems and products in the fastest-growing markets today. These markets include Smartphones, LCD TVs, notebooks, tablets, smart grid, automotive, automatic meter reading, medical, wireless infrastructure, PON, Internet of Things, optical transport, and datacenters.

Datasheet PDF

Download datasheets and manufacturer documentation for Semtech Corporation SX1509BIULTRT.

SX1509BIULTRT Documents

Download datasheets and manufacturer documentation for SX1509BIULTRT

Frequently Asked Questions

What is SX1509?
The SX1509 is a 16-channel GPIO expander with an I2C interface -- that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. And, with a built-in keypad engine, it can interface with up to 64 buttons set up in an 8x8 matrix.
What is SX1509 used for?
The SX1509 Breakout is a 16-channel GPIO expander with an I2C interface – that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. But the SX1509 can do so much more than just simple digital pin control. It can produce PWM signals, so you can dim LEDs.
How does SX1509 work?
The SX1509 Breakout is a 16-channel GPIO expander with an I2C interface – that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. But the SX1509 can do so much more than just simple digital pin control. It can produce PWM signals, so you can dim LEDs.
FAQ
What is SX1509?
The SX1509 is a 16-channel GPIO expander with an I2C interface -- that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. And, with a built-in keypad engine, it can interface with up to 64 buttons set up in an 8x8 matrix.
What is SX1509 used for?
The SX1509 Breakout is a 16-channel GPIO expander with an I2C interface – that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. But the SX1509 can do so much more than just simple digital pin control. It can produce PWM signals, so you can dim LEDs.
How does SX1509 work?
The SX1509 Breakout is a 16-channel GPIO expander with an I2C interface – that means with just two wires, your microcontroller can interface with 16 fully configurable digital input/output pins. But the SX1509 can do so much more than just simple digital pin control. It can produce PWM signals, so you can dim LEDs.

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