GPIO Port Expander From Diodes Incorporated Provides I2C Interface And Level Shifting For Any Peripheral
March 13 2019 - 10:00AM
Business Wire
Diodes Incorporated (Nasdaq: DIOD), a leading global
manufacturer and supplier of high-quality application specific
standard products within the broad discrete, logic, analog and
mixed-signal semiconductor markets, today announced the
PI4IOE5V6416 16-bit I/O expander, which enables any digital device
to be accessed and controlled over an I2C interface, across a range
of input and output voltages from 1.8V to 5V. The PI4IOE5V6416
offers an ultra-low power solution to expanding the available GPIO
on a microprocessor, microcontroller, ASSP, ASIC, or FPGA, using
the ubiquitous I2C interface. With 16 individually configurable
I/Os, developers can easily add an I2C interface to legacy
peripherals such as keypads, push-button switches, or digital
sensors. The I2C bus complies with both fast and standard
modes.
Each of the 16 ports on the PI4IOE5V6416 is configurable as
either an input or output by writing to the relevant register. All
of the I/O pins feature a push/pull FET configuration: when
configured as an input the FETs are turned off; when configured as
an output the corresponding FET provides a low impedance path to
either VDD(P) or VSS. Each port also features a programmable
pull-up or pull-down resistor and programmable output current. A
programmable latch is also provided for each pin when configured as
an input.
As the PI4IOE5V6416 provides flexible, bidirectional voltage
level shifting between the host and the outputs, it represents an
ideal solution to interfacing legacy digital devices operating at
up to 5.5V, with modern hosts operating at supply voltages as low
as 1.65V.
In addition to providing bidirectional voltage level shifting
and highly configurable I/O, the PI4IOE5V6416 also offers a
maskable open-drain active-low interrupt output that can be
configured to trigger on the change of state on any of the 16
GPIOs. This powerful feature has many potential uses where a
specific condition can be used to initiate a system-level action,
avoiding the need for the host to continuously poll the
peripheral.
The PI4IOE5V6416 offers exceptionally low stand-by current
consumption of just 1.5µA at 5V and 1.0µA at 3.3V. Active current
consumption during continuous register read at an I2C bus speed of
400kHz and supply voltage of 1.65 to 2.3V is typically 20µA (45µA,
max).
The PI4IOE5V6416 is available in a 24-pin TQFN (PI4IOE5V6416LE)
package or 24-pin TSSOP (PI4IOE5V6416ZDE) package. Further
information is available at www.diodes.com.
About Diodes Incorporated
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s
SmallCap 600 and Russell 3000 Index company, is a leading global
manufacturer and supplier of high-quality application specific
standard products within the broad discrete, logic, analog, and
mixed-signal semiconductor markets. Diodes serves the consumer
electronics, computing, communications, industrial, and automotive
markets. Diodes’ products include diodes, rectifiers, transistors,
MOSFETs, protection devices, function-specific arrays, single gate
logic, amplifiers and comparators, Hall-effect and temperature
sensors, power management devices, including LED drivers, AC-DC
converters and controllers, DC-DC switching and linear voltage
regulators, and voltage references along with special function
devices, such as USB power switches, load switches, voltage
supervisors, and motor controllers. Diodes also has timing,
connectivity, switching, and signal integrity solutions for
high-speed signals. Diodes’ corporate headquarters and Americas’
sales office are located in Plano, Texas and Milpitas, California.
Design, marketing, and engineering centers are located in Plano;
Milpitas; Taipei, Taiwan; Taoyuan City, Taiwan; Zhubei City,
Taiwan; Manchester, England; and Neuhaus, Germany. Diodes’ wafer
fabrication facility is located in Manchester, with an additional
facility located in Shanghai, China. Diodes has assembly and test
facilities located in Shanghai, Jinan, Chengdu, and Yangzhou,
China, as well as in Hong Kong, Neuhaus, and Taipei. Additional
engineering, sales, warehouse, and logistics offices are located in
Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China;
Seongnam-si, South Korea; Munich, Germany; and Tokyo, Japan, with
support offices throughout the world.
Recent news releases, annual reports and SEC filings are
available at the Company’s website: http://www.diodes.com. Written
requests may be sent directly to the Company, or they may be
e-mailed to: diodes-fin@diodes.com.
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version on businesswire.com: https://www.businesswire.com/news/home/20190313005062/en/
Company Contact:Diodes IncorporatedEmily YangVP,
Worldwide Sales and MarketingP: 972-987-3900E:
pressinquiries@diodes.com
Investor Relations Contact:Shelton GroupLeanne K.
SieversEVP, Investor RelationsP: 949-224-3874E:
lsievers@sheltongroup.com
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