User Guide

ME310G1 Hardware User Guide
1VV0301588 Rev. 4 Page 44 of 77 2020-01-21
General purpose I/O
The ME310G1 module is provided by a set of Configurable Digital Input / Output pins
(CMOS 1.8V). Input pads can only be read; they report the digital value (high or low) present
on the pad at the read time. Output pads can only be written or queried and set the value
of the pad output.
An alternate function pad is internally controlled by the ME310G1 firmware and acts
depending on the function implemented.
The following table shows the available GPIO on the ME310G1:
PAD
Signal
I/O
Drive
Strength
Default State
NOTE
V11
GPIO_01
I/O
1 mA
INPUT - PD (100K)
Alternate function DTR
INPUT - PU (100K)
V13
GPIO_02
I/O
1 mA
INPUT - PD (100K)
Alternate function
RING
D7
GPIO_03
I/O
1 mA
INPUT - PD (100K)
D9
GPIO_04
I/O
1 mA
INPUT - PD (100K)
D11
GPIO_05
I/O
1 mA
INPUT - PD (100K)
D13
GPIO_06
I/O
1 mA
INPUT - PD (100K)
5.7.1. Using a GPIO as INPUT
The GPIO pads, when used as inputs, can be connected to a digital output of another device
and report its status, provided this device has interface levels compatible with the 1.8V
CMOS levels of the GPIO.
NOTE:
In order to avoid a back powering effect it is recommended to avoid
having any HIGH logic level signal applied to the digital pins of the
ME310G1 when the module is powered off or during an ON/OFF
transition.