u-blox ZOE-M8 Series User Manual

ZOE-M8 series - Hardware Integration Manual
UBX-16030136 - R07 Production Information Design-in
Page 14 of 32
2.7 System Reset (RESET_N)
The ZOE-M8 GNSS SiPs provide a RESET_N pin to reset the system. The RESET_N is an input-only with internal
pull-up resistor. It must be at low level for at least 10 ms to make sure RESET_N is detected. It is used to reset the
system. Leave RESET_N open for normal operation. The RESET_N complies with the VCC level and can be actively
driven high.
RESET_N should be only used in critical situations to recover the system. The Real-Time Clock (RTC) will also
be reset and thus immediately afterwards the receiver cannot perform a Hot Start.
In reset state, the SiP consumes a significant amount of current. It is therefore recommended to use RESET_N
only as a reset signal and not as an enable/disable.
2.8 Pin description
Pin # SiP Name I/O Description Remark
A1 All GND Ground Ensure good GND connection
A2 All SDA / SPI CS_N I/O Serial interface. See section 2.2
A3 All GND Ground Ensure good GND connection
A4 All RF_IN I GNSS signal input See section 2.5
A5 All GND Ground Ensure good GND connection
A6 All Reserved I/O Reserved. Do not connect. Must be left open!
A7 All GND Ground Ensure good GND connection
A8 All GND Ground Ensure good GND connection
A9 All GND Ground Ensure good GND connection
B1 All SCL / SPI CLK I Serial interface. See section 2.2
B9 All GND Ground Ensure good GND connection
C1 All SQI_D1 I
Data line 1 to external SQI flash
memory or DC/DC configuration pin.
Leave open if not used.
C3 All TIMEPLUSE O Time pulse output Leave open if not used.
C4 All SAFEBOOT_N I
Used for programming the SQI flash
memory and testing purposes.
Leave open if not used.
C5 All LNA_EN O
LNA on/off signal connected to internal
LNA
Leave open if not used.
C6 All PIO15 I/O Digital I/O Leave open if not used.
C7 All GND Ground Ensure good GND connection
C9 All GND Ground Ensure good GND connection
D1 All SQI_D0 I/O
Data line 0 to external SQI flash
memory or DC/DC configuration pin.
Leave open if not used.
D3 All SQI_CS_N I/O
Chip select for external SQI flash
memory or DC/DC enable pin.
Leave open if not used.
D4 All D_SEL I Interface selector See section 2.2
D6 All GND Ground Ensure good GND connection
D9 All GND Ground Ensure good GND connection
E1 All SQI_CLK I/O
Clock for external SQI flash memory or
DC/DC configuration pin.
Leave open if not used.
E3 All SQI_D2 I/O
Data line 2 to external SQI flash
memory or DC/DC configuration pin.
Leave open if not used.
E7 All GND Ground Ensure good GND connection
E9 All Reserved I/O Reserved Do not connect. Must be left open!
F1 All Reserved I/O
Reserved
Do not connect. Must be left open!
F3 All SQI_D3 I/O
Data line 3 to external SQI flash
memory or DC/DC configuration pin.
Leave open if not used.
F4 All Reserved I/O Reserved Do not connect. Must be left open!
F6 All PIO14 I/O Digital I/O Leave open if not used.
F7 All GND Ground Ensure good GND connection
F9 All Reserved I/O Reserved Do not connect. Must be left open!

u-blox ZOE-M8 Series Specifications

General

Brand	u-blox
Model	ZOE-M8 Series
Category	Control Unit
Language	English