Beitian BP-126 Compact GNSS Module OEM for Automotive & Industrial IoT (BP-190 Pinout/Specs Reference)

Beitian

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Model BP-126 BP-190 BP-217

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Overview

Beitian BP-126 is a compact GNSS module intended for OEM integration, with customization availability for automotive and industrial IoT applications. This product listing also provides reference documentation for the BP-190 GPS module variant (pin assignment, electrical specifications, performance characteristics, and PCB layout recommendation). Available model options: BP-126 / BP-190 / BP-217.

Note: Some product naming may reference “High Precision RTK”; capability depends on the exact selected model/firmware configuration. If confirmation is needed for a specific integration requirement, contact support@rcdrone.top or visit https://rcdrone.top/.

Key Features (BP-190 reference)

TTL UART interface: UART_TX output 0–3.3 V, UART_RX input
TIMEPULSE (PP1S) output for timing synchronization (stated accuracy about 20 ns; pulse width configurable per protocol document)
DDC interface: DDC_SDA (serial data in/out), DDC_SCL (serial clock input)
RF input pin for GNSS signal input (RF_IN) and antenna bias supply pin (VCC_RF, V = Vcc)
RESET_N input and SAFE_BOOT_N pin (keep high or leave unconnected if unused)

Specifications (BP-190 reference)

Pin Assignment (BP-190, top view; 18-pin)

Pin Numbers	Name	Type	Description
5, 7, 13, 15	NC	-	NC
1, 10, 12	GND	G	Ground
2	UART_TX	O	TTL UART output, 0–3.3 V
3	UART_RX	I	TTL UART input
4	TIMEPULSE	O	PP1S output
6	VBAT	P	Backup battery supply voltage
8	VCC_MAIN	P	Main power supply voltage
9	RESET_N	I	Reset in
11	RF_IN	I	GNSS signal input
14	VCC_RF	P	Supply antenna bias voltage (V = Vcc)
16	DDC_SDA	I/O	DDC serial data in/out
17	DDC_SCL	I	DDC serial clock input
18	SAFE_BOOT_N	I	If low, module enters safe boot mode. No use, keep high or do not connect.

Electrical Specification

Absolute maximum ratings

Parameter	Symbol	Min	Max	Unit
Power Supply Voltage	VCC_MAIN	-0.5	3.6	V
Backup Supply Voltage	VBAT	-0.5	3.6	V
USB Power Supply	USB_PWR	3.0	3.6	V

Operation conditions

Parameter	Symbol	Min	Typ	Max	Unit
Main Power Supply: Power Supply Voltage	VCC_MAIN	2.8	3.3	3.6	V
Main Power Supply: Operating Current	-	15	20	25	mA
Backup Power Supply: Backup Supply Voltage	VBAT	1.6	3.3	3.6	V
Backup Power Supply: Operating Current	-	-	14	-	uA
UART/DDC/IO: Input Low Voltage	Vil	0	-	0.72	V
UART/DDC/IO: Input High Voltage	Vih	2.0	-	3.6	V
UART/DDC/IO: Output Low Voltage	Vol	-	-	0.4	V
UART/DDC/IO: Output High Voltage	Voh	2.4	-	-	V

Environmental Specification

Item	Description
Operating temperature range	-40 deg. C to +85 deg. C
Storage temperature range	-50 deg. C to +105 deg. C
Altitude	50,000 m
Velocity	500 m/s

Performance Characteristics

Position and velocity accuracy

Metric	Value
Position	CEP < 1.0 m
Velocity	0.05 m/s

Dynamic constraints

Condition	Value
Altitude	50,000 m
Velocity	500 m/s
Acceleration	<= 4 g

Acquisition time (TTFF)

Mode	BP-190
Hot Start	1 s
Cold Start	28 s

Sensitivity

Parameter	Description
Tracking & Navigation	-163 dBm
Acquisition	-148 dBm

PCB Layout Recommendation (BP-190 drawing values)

Outline values shown: 10.50 and 9.70
Side view length value shown: 10.70
Heights/steps shown: 0.60 and 1.80
Additional spacing/drill values shown: 0.70, 1.10, and Ø0.50

Applications

OEM GNSS positioning for automotive electronics and telematics
Industrial IoT devices requiring GNSS positioning and timing reference
Embedded systems using UART and DDC interfaces for GNSS data integration

Details

BP-190 GNSS module pin assignment table (top view, 18-pin) with UART, TIMEPULSE, RF_IN, VCC and GND

Use the BP-190 pin assignment reference to map UART, TIMEPULSE, RF input, power, reset, and DDC lines during OEM integration.

BP-190 electrical, environmental and timing/performance tables including VCC_MAIN/VBAT ranges, current, and operating temperature

Electrical and environmental reference tables help validate supply rails, IO levels, current draw, and operating temperature targets for automotive and industrial IoT builds.