LEA-M8S / LEA-M8T - Hardware Integration Manual
UBX-13003140 - R07
Production Information
Migration to u-blox M8 modules
Page 18 of 31
3
Migration to u-blox M8 modules
3.1
Migrating u-blox 6 designs to a u-blox M8 module
u-blox is committed to ensuring that products in the same form factor are backwards compatible over several
technology generations. Utmost care has been taken to ensure there is no negative impact on function or
performance and to make u-blox M8 modules as fully compatible as possible with previous generations modules.
If using BeiDou, check the bandwidth of the external RF components and the antenna. For information about
power consumption, see the
[1] and the
NEO/LEA-M8T
Data Sheet
[2]. It is highly advisable
that customers consider a design review with the u-blox support team to ensure the compatibility of key
functionalities.
3.2
Hardware migration LEA-6N -> LEA-M8S
Pin
LEA-6N
LEA-M8S
Remarks for Migration
Pin Name
Typical Assignment
Pin Name
Typical Assignment
1
SDA
DDC Data
SDA
DDC Data
No difference
2
SCL
DDC Clock
SCL
DDC Clock
No difference
3
TxD
Serial Port
TxD
Serial Port
No difference
4
RxD
Serial Port
RxD
Serial Port
No difference
5
NC
Not Connected
Reserved
Not Connected
No difference
6
VCC
Supply voltage
VCC
Supply voltage
No difference
7
GND
Ground (digital)
GND
Ground (digital)
No difference
8
VCC_OUT
Output voltage
VCC_OUT
Output voltage
No difference
9
NC
Not Connected
Reserved
Not Connected
No difference
10
RESET_N
External Reset
RESET_N
External Reset
No difference
11
V_BCKP
Backup voltage supply
V_BCKP
Backup voltage supply
If this was connected to GND
on u-blox 6 module, OK to
do the same on u-blox M8.
12
Safeboot_N
Do not drive low
Safeboot_N
Do not drive low
No difference
13
GND
Ground
GND
Ground
No difference
14
GND
Ground
GND
Ground
No difference
15
GND
Ground
GND
Ground
No difference
16
RF_IN
GNSS signal input
RF_IN
GNSS signal input
No difference
17
GND
Ground
GND
Ground
No difference
18
VCC_RF
Output Voltage RF section VCC_RF
Output Voltage RF section
No difference
19
V_ANT
Antenna Bias voltage
V_ANT
Antenna Bias voltage
No difference
20
AADET_N
Active Antenna Detect
AADET_N
Active Antenna Detect
No difference
21
Reserved
Not Connected
Reserved
Not Connected
No difference
22
Reserved
Not Connected
Reserved
Not Connected
No difference
23
Reserved
Not Connected
Reserved
Not Connected
No difference
24
VDD_USB
USB Supply
VDD_USB
USB Supply
No difference
25
USB_DM
USB Data
USB_DM
USB Data
No difference
26
USB_DP
USB Data
USB_DP
USB Data
No difference
27
EXTINT0
External Interrupt Pin
EXTINT0
External Interrupt Pin
No difference
28
TIMEPULSE
Timepulse (1PPS)
TIMEPULSE
Timepulse (1PPS)
No difference
Table 5: Pin-out comparison LEA-6N vs. LEA-M8S
