Arria® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683213
Date 10/18/2023
Public
Document Table of Contents

5.3.4. MultiVolt I/O Interface in Arria® V Devices

The MultiVolt I/O interface feature allows Arria® V devices in all packages to interface with systems of different supply voltages.

Table 41.  MultiVolt I/O Support in Arria® V Devices
VCCIO (V) Device Variant Support VCCPD (V) 0 Input Signal (V) Output Signal (V)
1.2 All 2.5 1.2 1.2
1.25 All 2.5 1.25 1.25
1.35 All 2.5 1.35 1.35
1.5 All 2.5 1.5, 1.8 1.5
1.8 All 2.5 1.5, 1.8 1.8
2.5 All 2.5 2.5, 3.0, 3.3 2.5
3.0 GX, GT, SX, and ST 3.0 2.5, 3.0, 3.3 3.0
GZ 3.0 2.5, 3.0, 3.3 3.0, 3.3
3.3 GX, GT, SX, and ST 3.3 2.5, 3.0, 3.3 3.3

The pin current may be slightly higher than the default value. Verify that the VOL maximum and VOH minimum voltages of the driving device do not violate the applicable VIL maximum and VIH minimum voltage specifications of the Arria® V device.

The VCCPD power pins must be connected to a 2.5 V, 3.0 V, or 3.3 V power supply. Using these power pins to supply the pre-driver power to the output buffers increases the performance of the output pins.

Note: If the input signal is 3.0 V or 3.3 V, Altera recommends that you use a clamping diode on the I/O pins. Use the on-chip clamping diode for the Arria® V GX, GT, SX, and ST devices, and an external clamping diode for the Arria® V GZ devices.