A Flipchip I/O Library with dynamitcally switchable 1.8V/3.3V GPIO, 5V I2C/SM- Bus ODIO, 5V OTP Cell, 1.8V & 3.3V Analog Cells and associated ESD.
A key attribute of this library is its ability to detect and dynamically adjust to a VDDIO supply of 1.8V or 3.3V during system operation. The GPIO cell can be configured as input, output, open-source, or open-drain with an optional internal 50K ohm pull-up or pull-down resistor. Four selectable drive strengths are offered (25-235MHz @1.8V,10pF)to optimize across SSO currents & power. The output driver exhibits 50 (ś20%) termination across PVT to reduce reflections at higher operating frequencies. Supply cells for VDDIO, VREF, and core VDD include necessary built-in ESD circuitry. A 5V I2C / SMBUS open-drain (fail-safe) cell, 5V OTP programming gate cell and 1.8V & 3.3V analog cells with ESD protection are included. The library features protection break cells to allow for separate grounds while maintaining ESD robustness. ESD design targets are 2KV HBM, & 500VCDM,yet this libraryhas consistently demonstrated 4KV HBM. This library can also support 2KV IEC 61000-4-2 system ESD with appropriate integration.
Operating Conditions
| Parameter | Value |
| VDDIO | 1.8V/3.3V Selectable |
| VREF | 1.8V |
| Core | 0.8V |
| BEOL | 1P8M or 1P10M |
| Cell Size | 30x50um |
| Temperature | -40C to 125C |
| Max Load | 50pF (1opF at speed) |
Library Cell Summary
| Cell Type | Feature |
| GPIO | 25-235MHz, selectable |
| I2C ODIO | 5V, fail-safe |
| Analog | 1.8V & 3.3V |
| Supply/ESD | 1.8V/3.3V; 1.8V; 0.8V; GND |
| OTP | 5V progamming gate cell |
| Break Cells | VDDIO, VDD, VSS |
