u-blox LEA-5 Series, Hardware Manual

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LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2 Released Appendix
Page 63 of 68
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LEA-4A/LEA-4S LEA-5A/LEA-5S Remarks for Migration
Pin Name Typical Assignment Pin Name Typical Assignment
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 - –.0V V_ANT 2.7V -5.5V No difference
20 AADET_N NC (1.8 to 5.0V) AADET_N NC
21 GPSMODE5
NC (GND or
VDD18OUT)
NC NC
22
GPSMODE2
GPSMODE2
3
NC (GND or
VDD18OUT)
NC NC
23 GPSMODE7 NC (1.8 to 5.0V) NC NC
24 VDDUSB
3.0 –3.6V/ GND
VDDUSB
Connected to GND
or VDD_USB Do not leave open. (VDD_USB is 3.3V regulated
power supply from VBUS.)
25 USB_DM VDDUSB I/O USB_DM NC No difference
26 USB_DP VDDUSB I/O USB_DP NC No difference
27 EXTINT0 NC (1.8 to 5.0V) EXTINT0 NC
28 TIMEPULSE VDDIO out TIMEPULSE Output

: Pins to be checked carefully; NC: Not connected
Table 17: Pin-out comparison LEA-4A/LEA-4S vs. LEA-5A/LEA-5S