u-blox NEO-7M-0 - Hardware Migration MAX-6 -> MAX-7

MAX-7 / NEO-7 / LEA-7 - Hardware Integration Manual
GPS.G7-HW-11006-1 Migration to u-blox-7 modules
Page 40 of 55
4.2.3 Hardware migration MAX-6 -> MAX-7
Pin
MAX-6 MAX-7 Remarks for Migration
Pin Name Typical Assignment Pin Name Typical Assignment
1
GND
GND
GND
GND
No difference
2
TxD
Serial Port
TxD
Serial Port
No difference
3
RxD
Serial Port
RxD
Serial Port
No difference
4
TIMEPULSE
Timepulse (1PPS)
TIMEPULSE
Timepulse (1PPS)
No difference
5 EXTINT0
External Interrupt
Pin
EXTINT0
External Interrupt
Pin
No difference
6 V_BCKP
Backup Supply
Voltage
V_BCKP
Backup Supply
Voltage
If on u-blox 6 module this was connected to GND,
no problem to do the same in u-blox 7.
(MAX-7C: Higher backup current, see 2.5.3.1
Single Crystal
)
7 VCC_IO
IO supply voltage
Input must be
always supplied.
Usually connect to
VCC Pin 8
VCC_IO
IO supply voltage
Input must be
always supplied.
Usually connect to
VCC Pin 8
No difference
8 VCC
Power supply of
module
MAX-6G 1.75 –
2.0V
MAX-6Q/C: 2.7 –
3.6V
VCC
Power supply of
module
MAX-7C: 1.65 –
3.6V
MAX-7Q: 2.7 –
3.6V
9 VRESET connect to pin 8 RESET_N Reset input
With MAX-6, if Reset input is used, it
implements the 3k3 resistor from pin 9 to pin
8. This also works with MAX-7. If used with
MAX-7, do not populate the pull-up resistor.
10
GND
GND
GND
GND
No difference
11 RF_IN
Matched RF-Input,
DC block inside.
RF_IN
Matched RF-Input,
DC block inside.
No difference
12
GND
GND
GND
GND
No difference
13 ANT_ON
Active antenna or
ext. LNA control
pin in power save
mode.
ANT_ON pin
voltage level:
MAX-6 -> VCC_RF
(pull-up)
ANT_ON
Active antenna or
ext. LNA control
pin in power save
mode.
ANT_ON pin
voltage level:
MAX-7 -> VCC_IO
(push-pull)
ANT_ON pin voltage level is VCC_IO
(only relevant when VCC_IO does not share the
same supply with VCC)
14 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
15
RESERVED
Leave open.
RESERVED
Leave open.
No difference
16
SDA
DDC Data
SDA
DDC Data
No difference
17
SCL
DDC Clock
SCL
DDC Clock
No difference
18
RESERVED
Leave open.
RESERVED
Leave open.
No difference
Table 15: Pin-out comparison MAX-6 vs. MAX-7