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Semtech Corporation - 16 Channel Low Voltage GPIO

Numéro de référence SX1503
Description 16 Channel Low Voltage GPIO
Fabricant Semtech Corporation 
Logo Semtech Corporation 





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SX1503 fiche technique
WIRELESS & SENSING
SX1501/SX1502/SX1503
4/8/16 Channel Low Voltage GPIO
SX1501/SX1502/SX1503
4/8/16 Channel Low Voltage GPIO with NINT and NRESET
GENERAL DESCRIPTION
The SX1501, SX1502 and SX1503 are complete ultra
low voltage General Purpose parallel Input/Output
(GPIO) expanders ideal for low power handheld
battery powered equipment. They allow easy serial
expansion of I/O through a standard I2C interface.
GPIO devices can provide additional control and
monitoring when the 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.
The core is operating as low as 1.2V while the I/O
banks can operate between 1.2V and 5.5V
independent of the core voltage and each other.
Each GPIO is programmable via 8-bit configuration
registers. Data registers, direction registers, pull-
up/pull-down registers, interrupt mask registers and
interrupt registers allow the system master to
program and configure 4 or 8 or 16-GPIOs using a
standard 400kHz I2C interface.
The SX1501, SX1502 and SX1503 offer a unique
fully programmable logic functions like a PLD to give
more flexibility and reduce external logic gates used
for standard applications.
The SX1501, SX1502 and SX1503 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 GPIO
lines.
The SX1501, SX1502 and SX1503 each come in a
small QFN-UT-20/28 package. All devices are rated
from -40°C to +85°C temperature range.
ORDERING INFORMATION
Part Number I/O Channels Package
SX1501I087TRT 4 QFN-UT-20
SX1502I087TRT 8 QFN-UT-20
SX1503I091TRT 16 QFN-UT-28
SX1502EVK(1)
8 Evaluation Kit
(1)SX1502I087TRT based, unique evaluation kit for the three
parts.
KEY PRODUCT FEATURES
4/8/16 channel of I/Os
True bi-directional style I/O
Programmable Pull-up/Pull-down
Push/Pull outputs
1.2V to 5.5V independent operating voltage for
all supply rails (VDDM, VCC1, VCC2)
5.5V compatible I/Os, up to 24mA output sink
(no total sink current limit)
Fully programmable logic functions (PLD)
400kHz 2-wire I2C compatible slave interface
Open drain active low interrupt output (NINT)
Bit maskable
Programmable edge sensitivity
Power-On Reset and reset input (NRESET)
Ultra low current consumption of typ. 1uA
-40°C to +85°C operating temperature range
Ultra-Thin 3x3mm QFN-UT-20 package
(SX1501/SX1502)
Ultra-Thin 4x4mm QFN-UT-28 package
(SX1503)
TYPICAL APPLICATIONS
Cell phones, PDAs, MP3 players
Digital camera
Portable multimedia player
Notebooks
GPS Units
Industrial, ATE
Any battery powered equipment
Rev 11 – 16th May 2012
1
www.semtech.com

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