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Document MT1503P.A
© Xsens Technologies B.V.
Hardware Integration Manual MTi 1-series
3.4 I/O pins
The I/O interface specifications are listed in Table 8.
Table 8: I/O interface specifications
I/O interface
Symbol
Min
Max
Unit
Description
SYNC_IN
V
IL
0.3
·
VDDIO
V
Input low voltage
V
IH
0.45
·
VDDIO + 0.3
V
Input high voltage
V
HYS
0.45
·
VDDIO + 0.3
V
Threshold hysteresis
voltage
nRST
V
IL
0.3
·
VDDIO
V
Only drive momentarily
R
PU
30
50
kΩ
Pull-up resistor
T
P
20
µs
Generated reset pulse
duration
3.4.1 Reset
The reset pin is active low. Drive this pin with an open drain output or momentary (tactile) switch to GND.
During normal operation, this pin should be left floating, as this line is also used for internal resets. This
pin has an internal weak pull-up to VDDIO.
Do not connect the reset pin directly to VDDIO!
3.4.2 SYNC_IN
SYNC_IN pin accepts an external trigger, on which the MTi 1-series sends out the latest available data
message. The SYNC_IN pin is 5V tolerant and can be connected directly to an external device. Please
make sure that the MTi 1-series and the external device are connected to or have the same common
GND. Table 8 shows the electrical specifications.
3.5 DNC/RESERVED pins
These pins are reserved for future use.
Do not connect, leave pins floating!
