Ublox LEA-M8S User Manual

LEA-M8S / LEA-M8T - Hardware integration manual
UBX-15030060 - R06 Migration to u-blox M8 modules Page 20 of 33
Production information
3 Migration to u-blox M8 modules
3.1 Migrating u-blox 6 designs to u-blox M8 module
u-blox is committed to ensuring that products in the same form factor are backwards compatible over
several technology generations. The 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 with previous
generation modules as possible. If using BeiDou, check the bandwidth of the external RF components
and the antenna. For information about power consumption, see the LEA-M8S Data sheet [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.
☞ Selected pin names have been updated to agree with a common naming convention across u-blox
modules. The pins have not changed their operation and are the same physical hardware but with
updated names.
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 in M8.
12
Reserved
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
EXTINT1
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

Ublox LEA-M8S Specifications

General

Brand	Ublox
Model	LEA-M8S
Category	Receiver
Language	English