Apogee SemiconductorAPIO16ENT-JEspansori GPIO

Product Description

• •  Dual Protocol Support:
• •  MODE pin selectable: SPI or I²C/SMBus operation
• •  Address Flexibility:
• •  I²C mode: Up to 16 devices via pin-configurable addresses
• •  SPI mode: 3 chip-select lines with built-in address decoding
• •  High-Speed Communication:
• •  1 MHz Fast Mode Plus (I²C)
• •  25 MHz SPI
• •  Voltage Range:
• •  1.4 V to 5.5 V operation for both interface and I/O supplies
• •  Built-in Level Shifting:
• •  Separate VCC pins allow operation across different logic levels
• •  Cold Sparable I/Os
• •  Power-On Reset (POR)

The APIO16 is a 16-bit radiation-hardened level translating I₂C, SMBUS, SPI 16-bit I/O expander designed for harsh environments, such as space and medical applications. It provides voltage-level translation and bidirectional communication over I2C , SMBUS, or SPI interfaces, supporting low-voltage controllers while driving higher voltage peripherals. The APIO16features extensive circuit techniques throughout, including triple modular redundancy, self correcting digital circuits and Dual Interlocked storage CEll (DICE) latches to ensure a high level of immunity to single-event transients (SET) and single event upset (SEU) without requiring additional redundant devices. The APIO16supports up to 16 I2C addresses configured via dedicated pins, and three SPI chip-select inputs allow multi-device SPI operation with minimal additional decoding logic. The open-drain INTB pin alerts the controller of input changes.
For more demanding radiation tolerance, see the Geosynchronous Earth Orbit (GEO) version AFIO16.

Evaluation Board

Apogee Semiconductor’s AP (LEO) and AF (LEO) families of radiation hardened logic, level translators, and RelBridge™ devices are focused on making the frontier of space more accessible by bridging the technology gap between commercial and high-reliability technologies at a lower cost with innovative solutions. The APIO16-EVB allows functional and performance validation of the AP and AF families in 28pin TSSOP packages.

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