Technical characteristics

Accuracy [1]
Horizontal Position Accuracy (RMS)
SPS 1.2 m CEP
RTK [2] 0.02 m
10s GNSS Outage 0.4 m
Vertical Position Accuracy (RMS)
SPS 1.8 m CEP
RTK 0.03 m
10s GNSS Outage 0.6 m
Velocity Accuracy (RMS)
Horizontal 0.02 m/s
Vertical 0.02 m/s
Heading Accuracy (RMS) [3] 0.5°
Attitude Accuracy (Roll/Pitch, RMS) 0.1°
Operating Limits
Velocity 515 m/s
Acceleration 8 g
Angular Rate 400 °/s
Temperature Calibration Range -40 °C to +85 °C
Timing
Time to First Fix [4]
Cold Start [5] < 60 s
Warm Start [6] < 45 s
Hot Start < 11 s
Signal Re-acquisition < 2 s
RTK Initialization Time < 15 s
INS PVA output rate 100 Hz
Sensitivity
Tracking -160 dBm
Cold Start -140 dBm
Environment
Operating Temperature (°C) -40 to +85
Non-Operating Temperature (°C) -55 to +105
Vibration IEC 60068-2-6 (5g)
Shock survival MIL-STD-810G (40g)
Electrical
Input Voltage (VDC) 2.7 to 5.5 V
Power Consumption (W) 1.0 (Typical)
Digital Interface UART, CAN, SPI, Ethernet
Physical
Package Type 50-pin LGA
Size (mm) 31 x 34 x 5
Weight (gm) 5

Notes

[1]Typical values, subject to ionospheric/tropospheric conditions, satellite geometry, baseline length, multipath and interference effects.
[2]Add 1ppm of baseline length.
[3]After dynamic motion initialization.
[4]Typical values.
[5]No previous satellite or position information.
[6]Using ephemeris and last known position.

Pin Definitions

../_images/OpenRTK330LI_pin_n.png
No. Name Type Description
1 GND P Ground
2 GND P Ground
3 GND P Ground
4 GND P Ground
5 VBAT P Reserved
6 LED2 O Status2 LED
7 LED1 O Status1 LED
8 ETH_RESET O Reset signal of ETH RMII interface
9 RMII_TXD0 O Transmit data0 of ETH RMII interface
10 RMII_TXD1 O Transmit data1 of ETH RMII interface
11 RMII_TX_EN O Transmit enable of ETH RMII interface
12 VDD_CORE P Reserved
13 VIN P Typical DC3.3V, input voltage DC3.0V~3.6V
14 RMII_RXD1 I Receive data1 of ETH RMII interface
15 ETH_MDC O Management interface (MII) clock output
16 RMII_RXD0 I Receive data0 of ETH RMII interface
17 RMII_REF_CLK I Clock signal of ETH RMII Interface
18 ETH_MDIO I/O Management interface (MII) data I/O
19 RMII_CRS_DV O Carrier sense/receive data valid output of ETH RMII interface
20 GND P Ground
21 GNSS_1PPS I 1PPS signal from external GNSS module
22 GNSS_RTK_STAT I RTK status signal from external GNSS module
23 GNSS_RSTn O Reset signal to external GNSS module
24 GNSS_TX I Receive data from external GNSS module
25 GNSS_RX O Transmit data to external GNSS module
26 DEBUG_NRST I Reset signal of MCU debug interface
27 WIFI/BT_RESET O Rest signal for external WIFI/BT module
28 WIFI/BT_BOOT_CTL O Boot mode select signal for external WIFI/BT module
29 USER_MOSI I SPI interface. Receive data from master
30 USER_SCK I SPI interface. Clock signal from master
31 USER_NSS I SPI interface. Chip selected signal from master
32 USER_MISO O SPI interface. Transmit data to master
33 LED3 O Status3 LED
34 ST_BOOT_MODE I Boot mode control signal for internal ST GNSS chip
35 WIFI/BT_UART2_RX I Receive data from external WiFi/BT module
36 WIFI/BT_UART2_TX O Transmit data to external WiFi/BT module
37 CAN_AB O CAN bus transceiver loopback mode control
38 CAN_120R_CTL O CAN termination resistor control (ON/OFF)
39 USER-DRDY O Data ready signal
40 GND P Ground
41 LTE1_TX O Transmit data to external LTE module 1
42 LTE1_RX I Receive data from external LTE module 1
43 LTE1_PWR O Power control signal for external LTE module 1
44 LTE1_RSTn O Reset signal of external LTE module 1
45 LTE2_RSTn O Reset signal of external LTE module 2
46 GND P Ground
47 LTE2_RX I Receive data from external LTE module 2
48 LTE2_TX O Transmit data to external LTE module 2
49 ST_UART_PROG_TX O Receive data from internal ST GNSS UART2 (GNSS program burning)
50 ST_UART_PROG_RX I Transmit data to internal ST GNSS UART2 (GNSS program burning)
51 DEBUG_TX O Transmit data. DEBUG serial port
52 DEBUG_RX I Receive data. DEBUG serial port
53 CAN_RX I Receive data from CAN bus
54 CAN_TX O Transmit data to CAN bus
55 USER_UART1_RX I Receive data. USER port
56 USER_UART1_TX O Transmit data. USER port
57 SWDIO I/O Data IO of SWD debug interface
58 SWCLK I Clock signal of SWD debug interface
59 ST_UART1_TX O Transmit data from internal ST GNSS UART1 port (debug data)
60 ST_UART1_RX I Receive data to internal ST GNSS UART1 port (debug data)
61 1PPS O 1PPS signal
62 LTE2_PWR O Power control signal for external LTE module 2
63 LNA_EN O Control signal of external LNA power
64 ANT_EN O Antenna enable, reserved
65 ANT_SENSE I Antenna sensing detection, reserved
66 AGND P Internal GNSS RF path ground
67 ANT_IN I GNSS antenna signal input
68 AGND P Internal GNSS RF path ground