Hardware Migration; Hardware Migration: Antaris 4  U-Blox 6; Hardware Migration: U-Blox 5  U-Blox 6; Migration Of Lea Modules - u-blox LEA-6 Series Hardware Integration Manual

firmware download in their application processor, will need to replace the software. A template is available from
your u-blox support team.
Please refer to the u-blox 6 Receiver Description including Protocol Specification [3] for more information. This
document is available on the ublox website.
B.3 Hardware Migration
B.3.1 Hardware Migration: ANTARIS 4  u-blox 6
u-blox 6 modules have been designed with backward compatibility in mind but some minor differences were
unavoidable. These minor differences will however not be relevant for the majority of the ANTARIS 4 designs.
Good performance requires a clean and stable power supply with minimal ripple. Care needs to be exercised in
selecting a strategy to achieve this. Avoid placing any resistance on the Vcc line. For better performance, use an
LDO to provide a clean supply at Vcc and consider the following:
•
Special attention needs to be paid to the power supply requirements as u-blox 6 has higher currents than
ANTARIS 4 (peak currents & backup current see datasheet for further details)
•
Wide power lines or even power planes are preferred.
•
Place LDO near the module.
•
Avoid resistive components in the power line (e.g. narrow power lines, coils, resistors, etc.).
Placing a filter or other source of resistance at Vcc can create significantly longer acquisition
times.
B.3.2 Hardware Migration: u-blox 5  u-blox 6
Check the pins RxD1 and EXTINT0 regarding the input voltage threshold.
For more information see the LEA-6 Data Sheet [1] and LEA-5 Data Sheet [7].
B.4 Migration of LEA modules
B.4.1 Migration from LEA-4 to LEA-6
See also the migration Table in the u-blox5 Hardware Integration Manual.
For u-blox6 the Input Voltage thresholds on the pins RXD1 and EXTINT0 have changed.
The Safeboot functionality is inverted compared to Antaris receivers.
VCC_OUT is now VCC and not 1.8 V as on Antaris Modules.
Also check your power supply requirements with the datasheet (for VCC and VBCKP).
Pin Name
1 Reserved
2 Reserved
3 TXD1
4 RXD1
5 VDDIO
6 VCC
7 GND
8 VDD18OUT
GPS.G6-HW-09007-A
Downloaded from DatasheetLib.com
LEA-4H/LEA-4P/LEA-4T
Typical Assignment
VDDIO level I/O;
SDA2
not connected
VDDIO level I/O;
SCL2
not connected
TxD1
VDDIO level I/O
VDDIO level I/O RxD1
1.65 – 3.60V NC
VCC
2.70 – 3.30V
GND GND
NC VCC_OUT
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LEA-6 / NEO-6 - Hardware Integration Manual
LEA-6H/LEA-6T
Pin Name Typical Assignment
NC
NC
Output
Input
Connect to VCC
2.70 – 3.60V
GND
NC
Preliminary
Remarks for Migration
Leave open if not used.
Can be left open, but connection to VCC is
recommended for compatibility reason. With LEA-
6H the I/O voltage is always VCC.
Extended power supply range, higher peak supply
current.
No difference
Internally connected to VCC, if you have circuitry
connected to this pin, check if it withstands the
Appendix
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