SX1512BIULTRT Semtech, SX1512BIULTRT Datasheet

SX1512BIULTRT

Manufacturer Part Number

SX1512BIULTRT

Description

16-chan GPIO With Independent I/O Voltages (SPI)

Manufacturer

Semtech

Datasheets

1.SX1511B.pdf (43 pages)

2.SX1511BIULTRT.pdf (43 pages)

3.SX1511BIULTRT.pdf (42 pages)

Current page: 1 of 42
Download datasheet (2Mb)

ADVANCED COMMUNICATIONS & SENSING

SX1510/SX1511/SX1512

World’s Lowest Voltage Level Shifting GPIO with LED Driver and Keypad Engine

The SX1510, SX1511 and SX1512 are complete ultra

low voltage 1.2V to 3.6V General Purpose parallel

Input/Output (GPIO) expanders ideal for low power

handheld battery powered equipment. This family of

GPIOs comes in 4-, 8-, 16-channel configuration and

allows easy serial expansion of I/O through a

standard SPI interface. GPIO devices can provide

additional

microcontroller or chipset has insufficient I/O ports, or

in systems where serial communication and control

from a remote location is advantageous.

These devices 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. The core is operating as low as 1.425V while

the dual I/O banks can operate between 1.2V and

3.6V independent of the core voltage and each other

(5.5V tolerant).

The SX1510, SX1511 and SX1512 feature a fully

programmable LED Driver with internal oscillator for

enhanced lighting control such as intensity (via 256-

step PWM), blinking and breathing (fade in/out) make

them highly versatile for a wide range of LED

applications.

In addition, keypad application is also supported with

the

continuous keypad monitoring up to 64 keys without

any additional host interaction and further reduce the

bus activity.

The SX1510, SX1511 and SX1512 have the ability to

generate mask-programmable interrupts based on

falling/rising edge of any of its GPIO lines. A

dedicated pin indicates to a host controller that a

state change occurred in one or more of the lines.

Each GPIO is programmable via 8-bit configuration

registers such as data registers, direction registers,

pull-up/pull-down registers, interrupt mask registers

and interrupt registers. These I/O expanders come in

small footprint packages and are rated from -40° C t o

+85° C temperature range.

(1)

Rev 1 – 24

Future product

ENERAL

RDERING

SX1511IULTRT

SX1512IULTRT

SX1510XXX

Part Number

SX1512EVK

on-chip

control

Feb. 2010

ESCRIPTION

NFORMATION

(1)

scanning

I/O Channels

and

engine

monitoring

which

Evaluation Kit

QFN-UT-14

QFN-UT-20

QFN-UT-28

Package

when

enables

the

YPICAL

World’s Lowest Voltage Level Shifting GPIO

1.2V to 3.6V Low Operating Voltage with Dual

Independent I/O Rails (VCC1, VCC2)

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

On-Chip Keypad Scanning Engine

4/8/16 Channels of True Bi-directional Style I/O

Open Drain Active Low Interrupt Output (NINT)

Built-in Clock Management (Internal 2MHz

Oscillator/External Clock Input, 7 clock values)

SPI Compatible Slave Interface (up to 20MHz)

Power-On Reset and Reset Input (NRESET)

Ultra Low Current Consumption of typ. 1uA

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

2kV HBM ESD Protection

Small Footprint Packages

Pb & Halogen Free, RoHS/WEEE compliant

Cell phones, PDAs, MP3 players

Digital camera, Notebooks, GPS Units

Any battery powered equipment

RODUCT

Enable Direct Level Shifting Between I/O

Intensity Control (256-step PWM)

Blink Control (224 On/Off values)

Breathing Control (224 Fade In/Out values)

Support Up to 8x8 Matrix (64 Keys)

Configurable Input Debouncer

Programmable Pull-up/Pull-down

Push/Pull or Open-drain outputs

Programmable Polarity

Bit Maskable

Programmable Edge Sensitivity

OSCIO can be Configured as GPO

Banks and Host Controller

PPLICATIONS

with LED Driver and Keypad Engine

SX1510/SX1511/SX1512

EATURES

www.semtech.com

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