Automotive Product of the Year
Product Name: PI4IOE5V6534Q
Company: Diodes Incorporated
Entry Subject: Industry-First, Automotive-Compliant Dual Power Rail I2C Bus GPIO Expander Improves System Design and Adds Flexibility
Representing an industry first for the automotive industry, Diodes’ automotive-compliant, AEC-Q100 Grade 2 qualified 34-bit I/O expander with dual voltage rails provides enhanced programmable I/O for next-generation low voltage microprocessors and microcontrollers via the I2C interface.
As part of Diodes’ ongoing expansion into the automotive industry, its PI4IOE5V6534Q device provides engineers with a simple solution when additional I/Os are needed while keeping interconnections to a minimum – for example, in infotainment, telematics, and advanced driver-assistance systems (ADAS). Removing the need for an external voltage-level translator simplifies the design of new ADAS and telematics systems, and reduces overall bill-of-material (BOM) cost.
The PI4IOE5V6534Q operates from 1.65V to 5.5V on the GPIO port side, while on the SCL/SDA side (I2C interface), it operates from 0.8V to 3.6V. Crucially, this dual power rail allows the device to interface with next-generation low-power microchips on the SCL/SDA side. Reducing power consumption, the expander offers an exceptionally low standby current consumption of 2µA at 3.3V.
Each 34-bit GPIO on the device is configurable, and each port features a programmable pull-up or -down resistor and a programmable output current. As part of the enhanced I/O features and unlike many I/O expanders on the market, the PI4IOE5V6534Q also provides programmable open-drain outputs. The device has an interrupt masking feature, enabling the designer to mask the interrupt from an individual GPIO port and initiate a system-level action.
Ahead of the game, the PI4IOE5V6534Q scores strongly in three main areas to provide designers with a true ‘enabling solution’ to solve problems and offer greater flexibility:
1. Its low operation power supply voltage from 0.9V or 1.65V to 5.5V supports new generation low-voltage microprocessors and microcontrollers.
2. Automotive compliant, qualified to AEC-Q100 Grade 1 in IATF 16949 certified manufactured facilities supporting PPAP documents supporting automotive market requirements.
3. It has a host of enhanced I/O features, namely programmable output drive strength, latchable inputs, programmable pull-up/pull-down resistors, maskable interrupt, interrupt status register, programmable open-drain and push-pull outputs, whereas most I/O expanders have no or less open drain outputs, and do not provide enhanced programmable I/O features. So, the PI4IOE5V6534Q can satisfy engineers’ needs on open drain outputs and provide more options on I/O programming.
Furthermore, the device’s bidirectional voltage-level translation and GPIO expansion is able to link the new generation of low-power system processors and external I/O devices with different voltage levels. This saves the cost of a level shifter in terms of design time, BOM, and manufacturing.
The I/O port voltage, pin count, and I2C-bus voltage on new generation, automotive low-voltage microprocessors and microcontrollers is getting lower due to new semiconductor processes and packaging costs. To drive external devices operating at a different voltage level and with more I/O pins, designers need new I/O expanders to link the system processor and external devices. Meanwhile, designers need low-power consumption and more programmable devices to achieve power-saving target and flexible system design.
Factors driving the demand for this type of device are the needs for:
• Low operation power supply voltage from 1.65V or 0.9V on the I2C bus interface to 5.5V on I/O ports.
• Bidirectional voltage-level translation and GPIO expansion.
• Low standby current consumption.
• Enhanced I/O programming features, including programmable output drive strength, latchable inputs, programmable pull-up/pull-down resistors, maskable interrupt, interrupt status register, programmable open-drain, or push-pull outputs.
• Support -40 to 105°C ambient temperature range.
All of the above features contribute to making it possible for designers to respond more easily to the ever-increasing needs of the fast moving, technology-rich automotive market to provide enhanced driving features and experiences for the consumer.
Diodes’ automotive-compliant, AEC-Q100 Grade 2 qualified, 34-bit I/O PI4IOE5V6534Q expander provides enhanced programmable I/O for next-generation low-voltage microprocessors and microcontrollers via the I2C interface. The device simplifies design and offers increased flexibility.