Pinout of I2C bus

I2C is a bus invented by Philips to allow simple, robust and cost effective communication between integrated circuits. TWI and SMBus are the Atmel and Intel versions of these bus.

This article illustrates on which pins are available this interface

Acqua A5

Up to three hardware I2C bus are available on Aria G25 (pinout page).

Pin # Signal Atmel name Description
J3.42 SDA0 (TWD0) PA30 Data line bus 0
J3.41 SCL0 (TWCK0) PA31 Clock line bus 0
J3.26 SDA1 (TWD1) PC26 Data line bus 1
J3.28 SCL1 (TWCK1) PC27 Clock line bus 1
J3.36 SDA2 (TWD2) PA18 Data line bus 2
J3.35 SCL2 (TWCK2) PA19 Clock line bus 2

Aria G25

Up to two hardware I2C bus are available on Aria G25 (pinout page).

Pin # Signal Atmel name Description
W17 SDA0 (TWD0) PA30 Data line bus 0
W18 SCL0 (TWCK0) PA31 Clock line bus 0
N2 SDA1 (TWD1) PC0 Data line bus 1
N3 SCL1 (TWCK0) PC1 Clock line bus 1

Arietta G25

Up to two hardware I2C bus are available on Arietta G25 (pinout page).

Pin # Signal Atmel name Description
J4.14 SDA0 (TWD0) PA30 Data line bus 0
J4.12 SCL0 (TWCK0) PA31 Clock line bus 0
J4.39 SDA1 (TWD1) PC0 Data line bus 1
J4.37 SCL1 (TWCK1) PC1 Clock line bus 1

Author:
Sergio Tanzilli - tanzilli@acmesystems.it
http://www.tanzilli.com - https://github.com/tanzilli