u-blox MAX-7 Series - 4.2.2 Hardware Migration NEO-6 to NEO-7

MAX-7 / NEO-7 / LEA-7 - Hardware Integration Manual
GPS.G7-HW-11006-1 Migration to u-blox-7 modules
Page 39 of 55
4.2.2 Hardware migration NEO-6 -> NEO-7
Pin
NEO-6 NEO-7 Remarks for Migration
Pin Name Typical Assignment Pin Name Typical Assignment
1
RESERVED
Leave open.
RESERVED
Leave open.
No difference
2 SS_N SPI Slave Select D_SEL
selects the
interface
-> Different functions, compatible only when
not using SPI for communication.
3
TIMEPULSE
Timepulse (1PPS)
TIMEPULSE
Timepulse (1PPS)
No difference
4 EXTINT0
External Interrupt
Pin
EXTINT0
External Interrupt
Pin
No difference
5
USB_DM
USB Data
USB_DM
USB Data
No difference
6
USB_DP
USB Data
USB_DP
USB Data
No difference
7
VDD_USB
USB Supply
VDD_USB
USB Supply
No difference
8 RESERVED
Pin 8 and 9 must
be connected
together.
RESET_N Reset input
If pin 8 is connected to pin 9 on NEO-7N, the
device always runs. With NEO-6Q, if Reset
input is used, it implements the 3k3 resistor
from pin 8 to pin 9. This also works with
NEO-7N. If used with NEO-7N, do not
populate the pull-up resistor.
9 VCC_RF
Can be used for
active antenna or
external LNA
supply.
VCC_RF
Can be used for
active antenna or
external LNA
supply.
No difference
10
GND
GND
GND
GND
No difference
11 RF_IN GPS signal input RF_IN GPS signal input
NEO-7N has the option to supply an active
antenna,. See pin 17.
12
GND
GND
GND
GND
No difference
13
GND
GND
GND
GND
No difference
14
MOSI/CFG_
COM0
SPI MOSI /
Configuration
Pin.
Leave open if not
used.
ANT_ON
turn on and off
an optional
external LNA
ANT_ON (antenna on) can be used to turn on
and off an optional external LNA.
-> Different functions, no SPI MOSI and
configuration pins with NEO-7. If not used as
default configuration, it must be set using
software command!
It is not possible to migrate from NEO-6 to
NEO-7N, if NEO-6 pin 14 is connected to GND.
In this case, migrate to NEO-7M!
15
MISO/CFG_
COM1
SPI MISO /
Configuration
Pin. Leave open if
not used.
RESERVED Leave open.
16
CFG_GPS0/S
CK
Power Mode
Configuration Pin
/ SPI Clock. Leave
open if not used.
RESERVED Leave open.
17
RESERVED
Leave open.
RESERVED
Leave open.
No difference
18 SDA DDC Data SDA
DDC Data / SPI
CS_N
No difference for DDC. If pin 2 low = SPI chip
select.
19 SCL DDC Clock SCL
DDC Clock / SPI
SCK
No difference for DDC. If pin 2 low = SPI clock.
20 TxD
Serial Port
TxD
Serial Port / SPI
MISO
No difference for UART. If pin 2 low = SPI MISO.
21 RxD
Serial Port
RxD
Serial Port / SPI
MOSI
No difference for UART. If pin 2 low = SPI MOSI.
22 V_BCKP
Backup Supply
Voltage V_BCKP
Backup Supply
Voltage
Check current in Data Sheet
If on u-blox 6 module this was connected to GND,
no problem to do the same in u-blox 7.
23 VCC
Supply voltage
NEO-6G:
1.75 – 2.0V
NEO-6Q/M/P/V/T:
2.7 – 3.6V
VCC
Supply voltage
NEO-7M:
1.65 – 3.6V
NEO-7N:
2.7 – 3.6V
See Figure 33: Migrating u-blox 6 designs to a u-
blox 7 receiver module for migration path.
24
GND
GND
GND
GND
No difference
Table 14: Pin-out comparison NEO-6 vs. NEO-7