Advantech SOM-4450 Series, Design Manual

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Advantech SOM-ETX Design Guide
2.5.2.10 I2C
Table 2.60 I2C I/O Voltage
Symbol Parameter Min Max Unit Note
V
IL
Input Low
Voltage -0.5 0.3Vdd V
V
IH
Input High
Voltage 0.7Vdd Vdd+0.5 V
V
OL
Output Low
Voltage 0 0.4 V
*1. The I2C Bus Specification V2.1.
*2. Vdd is the voltage which the pull-up resistor are connected.
2.5.2.11 SMBus
Table 2.61 SMBus I/O Voltage
Symbol Parameter Min Max Unit Note
V
IL
Input Low
Voltage - 0.8 V
V
IH
Input High
Voltage 2.1 Vdd V
V
OL
Output Low
Voltage - 0.4 V
*1. System Management Bus (SMBus) Specification v2.0.
*2. Vdd is the voltage which the pull-up resistor are connected.
Chapter 2 SOM-ETX Overview 49