u-blox EVK-M91, User Manual

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EVK-M91 - User guide
2 Specifications
Parameter Specification
Serial interfaces
1 USB 2.0 Type C
1 UART, max. baud rate 921600 Bd
RS232 +/- 5 V level
14 pin – 3.0 V logic
1 I2C max. 400 kHz
1 SPI – max. SPI CLK 5.5 MHz, max. data rate 1 Mbit/s
Timing interfaces 1 Time pulse output
Dimensions 105 x 64 x 26 mm
Power supply 5 V via USB or powered via external power supply pin 14
(V5_IN) and pin 1 (GND)
Normal operating temperature
-40 °C to +65 °C
Table 2: EVK-M91 specifications
2.1 Safety precautions
EVK-M91 must be supplied by a PS1 class limited power source. See section 6.2.2.4 of IEC
62368-1:2018 [
11 ] for more information on the PS1 class.
In addition to a limited power source, only ES1 class circuits are to be connected to the EVK-
M91, including interfaces and antennas. See section 5.2.1.1 of IEC 62368-1:2018 [
11 ] for more
information on the ES1 class.
UBX-19056858 - R02 2 Specifications Page 5 of 24