LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2
Released
Appendix
Page 62 of 68
Pi
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LEA-4H/LEA-4P/LEA-4T
LEA-5H/LEA-5T
Remarks for Migration
Pin Name
Typical Assignment
Pin Name
Typical Assignment
6
VCC
2.70 – 3.30V
VCC
2.70 – 3.60V
Extended power supply range, higher peak supply
current.
7
GND
GND
GND
GND
No difference
8
VDD18OUT
NC
VCC_OUT
NC
Internally connected to VCC, if you have circuitry
connected to this pin, check if it withstands the
VCC voltage.
9
Reserved
NC
Reserved
NC
10
RESET_N
1.8V
RESET_N
NC
Input only, do not drive high. Internal pull up to
VCC.
11
V_BAT
1.50 – 3.6V
V_BCKP
1.4 – 3.6V
Wider voltage range but needs more current.
Check your backup supply, regarding the higher
consumption.
12
BOOT_INT
NC
Reserved
NC
do not drive low.
13
GND
GND
GND
GND
No difference
14
GND
GND
GND
GND
No difference
15
GND
GND
GND
GND
No difference
16
RF_IN
RF_IN
RF_IN
RF_IN
No difference
17
GND
GND
GND
GND
No difference
18
VCC_RF
VCC - –.1V
VCC_RF
VCC - –.1V
No difference
19
V_ANT
3.0V –5.0V
V_ANT
2.7V -5.5V
No difference
20
AADET_N
NC
AADET_N
NC
21
EXTINT1
NC
NC
NC
22
Reserved
NC
NC
NC
23
Reserved
NC
NC
NC
24
VDDUSB
Connected to GND
or VDD_USB
VDDUSB
Connected to GND
or VDD_USB
Do not leave open. (VDD_USB is 3.3V regulated
power supply from VBUS.)
25
USB_DM
NC
USB_DM
NC
No difference
26
USB_DP
NC
USB_DP
NC
No difference
27
EXTINT0
NC
EXTINT0
NC
28
TIMEPULSE
VDDIO level I/O
TIMEPULSE
Output
: Pins to be checked carefully; NC: Not connected
Table 16: Pin-out comparison LEA-4H/LEA-4P/LEA-4T vs. LEA-5H/LEA-5T
Pi
n
LEA-4A/LEA-4S
LEA-5A/LEA-5S
Remarks for Migration
Pin Name
Typical Assignment
Pin Name
Typical Assignment
1
TxD2
3.0V out
SDA2
NC
2
RxD2
1.8 - –.0V
SCL2
NC
3
TxD1
3.0V out
TxD1
Output
4
RxD1
1.8 - –.0V in
RxD1
Input
Leave open if not used.
5
VDDIO
VCC
NC
Connect to VCC
Can be left open, but connection to VCC is
recommended for compatibility reason (e.g LEA-
5Q).
6
VCC
2.70 – 3.30V
VCC
2.70 – 3.60V
Extended power supply range, higher peak supply
current.
7
GND
GND
GND
GND
No difference
8
VDD18OUT
1.8V out
VCC_OUT
NC
Internally connected to VCC, if you have circuitry
connected to this pin, check if it withstands the
VCC voltage.
9
GPSMODE6
NC (GND or
VDD18OUT)
CFG_COM1
NC
10
RESET_N
ACTIVE LOW
RESET_N
NC
Input only, do not drive high. Internal pull up to
VCC.
11
V_BAT
1.50 – 3.6V
V_BCKP
1.4 – 3.6V
Wider voltage range but needs more current.
Check your backup supply, regarding the higher
consumption.
