TAU1312-datasheet

TAU1312 Multi-Band GNSS RTK Module

Feature

• Supports GPS, BDS, GLONASS, Galileo, and QZSS
• Compact size for high precision industry
• Integrated Real Time Kinematics (RTK)
• State-of-art low power consumption
• Supports multi-band multi-system high-precision raw data output, easy for 3rd party integration
• Highly integrated module, the best cost-effective high precision GNSS solution
• Compact size 12*16mm

Table 1 TAU1312 P/N

Specifications

Table 2

Parameter	Specifications
Constellations	BDS, GPS, QZSS, GLONASS, Galileo, NavIC, SBAS
Channel	40
Update rates	PVT 10Hz RTK 5Hz Max
Position accuracy	GNSS	2.5m CEP
	SBAS	＜1.0m CEP
	RTK	1.5 cm + 1 ppm (H) 6.5 cm + 1 ppm (V)
Velocity & Time accuracy	GNSS	0.1 m/s CEP
	1PPS	20ns RMS
TTFF	Hot start	2s
	Cold start	24s
RTK	Convergence time	<10s
	Reliability	＞99.9%
Sensitivity	Cold start	-148 dBm
	Hot start	-158 dBm
	Reacquisition	-160 dBm
	Tracking & navigation	-162 dBm
Protocol	NMEA-0183 V4.00/4.10
	RTCM 3.X
Baudrate	115200 bps, by default
Operating condition	Main supply	2.0V to 3.6V
	Digital I/O supply	1.8V to 3.6V
	Backup supply	1.8V to 3.6V
Power consumption	Tracking	GNSS	34 mA @ 3.3V
		Single system	22 mA @ 3.3V
	Standby	Data backup	12 uA
		RTC	1.4 uA
Serial interface	UART	1
	SPI	1
	I2C	1
Operating limit	Velocity	515 m/s
	Altitude	18,000m
Environmental conditions	Operating temp.	-40°C to +85°C
	Storage temp.	-40°C to +90°C
	Humidity	95% RH
Size	16.0×12.2×2.4 mm, 24pin LCC

GNSS Reception

Table 3 GNSS reception table

P/N	OPTIONS	GPS/QZSS					BDS					GLONASS		GALILEO			IRNSS
		L1C/A	L1C	L2C	L5	L6	B1I	B1C	B2I	B2a	B3I	L1	L2	E1	E5	E6	L5
TAU1312-1216A00	A,L1+L5	*			*		*			*		*		*	*
	B,L1+L2	*		*			*		*			*	*	*

PIN DESCRIPTION

Pin Assignment

Figure 3 Pin assignment (top view)

Detailed Pin Descriptions

Table 4 Detailed pin descriptions

ELECTRICAL CHARACTERISTICS

Absolute Maximum Rating

Table 5 Absolute rating

Symbol	Parameter	Min.	Max.	Unit
VDD	Power input for the main power domain	-0.5	3.63	V
AVDD_BAK	Power input for the backup power domain	-0.5	3.63	V
AVDUSB	USB supply voltage	-0.5	3.6	V
T storage	Storage temperature	-40	85	°C
T solder	Solder reflow temperature	--	260	°C

IO Characteristics

PRRSTX and PRTRG

Table 6 PRRSTX and PRTRG

Symbol	Parameter	Condition	Min.	Typ.	Max.	Unit
I IZ	Input leakage current	--	--	--	+/-1	uA
V IH	Input high voltage	--	AVDD_BAK*0. 7	--	AVDD_BAK	V
V IL	Input low voltage	--	0	--	AVDD_BAK*0.3	V
C i	Input capacitance	--	--	--	10	pF
R PU	Pull-up resistance	--	18	--	84	kOhm

USB I/O

Table 7 USB signal

Others

Table 8 Others

DC Characteristics

Operating Conditions

Table 9 Operating Conditions

Power Consumption

Table 10 Power consumption

HARDWARE DESCRIPTION

Default Serial interfaces

Table 11 Default message

Interface	Settings
UART output	115200 baud, 8 data bits, no parity bit, 1 stop bitConfigured to transmit both NMEA and HD Binary protocols, but only the following NMEA (and no HD Binary sentence) messages have been activated at start-up: GGA, GSA, GSV, RMC, ZDA, TXT-ANT
UART input	115200 baud, 8 data bits, no parity bit, 1 stop bit, autobauding disabled Automatically accepts following protocols without need of explicit configuration: HD binary sentence, NMEA, RTCM The GNSS receiver supports interleaved HD binary and NMEA messages.
Timepulse,(1Hz Nav)	1 pulse per second, synchronized at rising edge, pulse length 100ms

5 MECHANICAL SPECIFICATION

Dimensions

Figure 6 Dimensions

Table 12 Dimensions

PRODUCT PACKANG AND HANDLING

Moisture sensitivity level

The Moisture Sensitivity Level (MSL) of the GNSS module is MSL4.

LABELING AND ORDERING INFORMATION

Ordering info

Table 15 P/N