SX1504 Datasheet, PDF (1/33 Pages) Semtech Corporation – 4/8/16 Channel GPIO with NINT and NRESET

ADVANCED COMMUNICATIONS & SENSING
SX1504/SX1505/SX1506
4/8/16 Channel GPIO
SX1504/SX1505/SX1506
4/8/16 Channel GPIO with NINT and NRESET
GENERAL DESCRIPTION
The SX1504, SX1505 and SX1506 are complete
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 2.5V while the I/O
banks can operate between 2.5V 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 SX1504, SX1505 and SX1506 offer a unique
fully programmable logic functions like a PLD to give
more flexibility and reduce external logic gates used
for standard applications.
The SX1504, SX1505 and SX1506 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 SX1504, SX1505 and SX1506 each come in a
small QFN-UT-20/28 package as well as a TSSOP-
20/28 package. All devices are rated from -40°C to
+85°C temperature range.
ORDERING INFORMATION
Part Number I/O Channels Package
SX1504I087TRT
4
QFN-UT-20
SX1505I087TRT
8
QFN-UT-20
SX1506I091TRT
16
QFN-UT-28
SX1504I088TRT⁽¹⁾
4
TSSOP-20
SX1505I088TRT⁽¹⁾
8
TSSOP-20
SX1506I089TRT⁽¹⁾
16
TSSOP-28
SX1502EVK⁽²⁾
8
Evaluation Kit
(1)_{Future products}
(2)_{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
• 2.5V 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 and TSSOP-20
packages (SX1504/SX1505)
• Ultra-Thin 4x4mm QFN-UT-28 and TSSOP-28
packages (SX1506)
TYPICAL APPLICATIONS
• Cell phones, PDAs, MP3 players
• Digital camera
• Portable multimedia player
• Notebooks
• GPS Units
• Industrial, ATE
• Any battery powered equipment
Rev 1 – 3^rd Oct. 2008
1
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