u-blox LARA-R2 series, Руководство по системной интеграции

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LARA-R2 series - System Integration Manual
UBX-16010573 - R02 Objective Specification Appendix
Page 141 of 148
A.2 Pin-out comparison between SARA-U2 and LARA-R2
SARA-U2 LARA-R2
Pin No Pin Name Description Pin Name Description Remarks for migration
1 GND Ground GND Ground
2 V_BCKP RTC Supply I/O
Output characteristics:
1.8 V typ, 3 mA max
Input op. range:
1.0 V – 1.9 V V_BCKP RTC Supply I/O
Output characteristics:
1.8 V typ, 3 mA max
Input op. range:
1.0 V – 1.9 V No functional difference
3 GND Ground GND Ground
4 V_INT Interfaces Supply Out
Output characteristics:
1.8 V typ, 50 mA max V_INT Interfaces Supply Out
Output characteristics:
1.8 V typ, 50 mA max No functional difference
5 GND Ground GND Ground
6 DSR UART DSR Output
1.8 V, Driver strength: 1 mA DSR UART DSR Output
1.8 V, Driver strength: 6 mA No functional difference
7 RI UART RI Output
1.8 V, Driver strength: 2 mA RI UART RI Output
1.8 V, Driver strength: 6 mA No functional difference
8 DCD UART DCD Output
1.8 V, Driver strength: 2 mA DCD UART DCD Output
1.8 V, Driver strength: 6 mA No functional difference
9 DTR UART DTR Input
1.8 V, Internal pull-up: ~14 k DTR UART DTR Input
1.8 V, Internal pull-up: ~7.5 k No functional difference
10 RTS UART RTS Input
1.8 V, Internal pull-up: ~8 k RTS UART RTS Input
1.8 V, Internal pull-up: ~7.5 k No functional difference
11 CTS UART CTS Output
1.8 V, Driver strength: 6 mA CTS UART CTS Output
1.8 V, Driver strength: 6 mA No functional difference
12 TXD UART Data Input
1.8 V, Internal pull-up: ~8 k TXD UART Data Input
1.8 V, Internal pull-up: ~7.5 k No functional difference
13 RXD UART Data Output
1.8 V, Driver strength: 6 mA RXD UART Data Output
1.8 V, Driver strength: 6 mA No functional difference
14 GND Ground GND Ground
15 PWR_ON Power-on Input
No internal pull-up
L-level: -0.30 V – 0.65 V
H-level: 1.50 V – 4.40 V
ON L-level pulse time:
50 µs min / 80 µs max
OFF L-level pulse time:
1 s min PWR_ON Power-on Input
10 k

internal pull-up to V_BCKP
L-level: –0.30 V … 0.54 V
H-level: 1.26 V … 2.10 V
ON L-level pulse time:
50 µs min
OFF L-level pulse time:
Not supported
External

Internal pull-up
Sligtlhy different input levels
Switch-off over this pin is not
supported by LARA-R2 series
16 GPIO1 1.8 V GPIO
Driver strength: 6 mA GPIO1 1.8 V GPIO
Driver strength: 6 mA No functional difference
17 VUSB_DET USB Detect Input
5 V, Supply detection VUSB_DET USB Detect Input
5 V, Supply detection No functional difference
18 RESET_N Reset signal
10 k

internal pull-up
L-level: -0.30 V – 0.51 V
H-level: 1.32 V – 2.01 V
Reset L-level pulse time:
50 ms min
RESET_N Reset signal
10 k

internal pull-up
L-level: -0.30 V – 0.51 V
H-level: 1.32 V – 2.01 V
Reset L-level pulse time:
50 ms min
No functional difference
19 CODEC_CLK 1.8 V Clock Output
Driver strength: 4 mA GPIO6 1.8 V Clock Output
Driver strength: 6 mA No functional difference
20 GND Ground GND Ground
21 GND Ground HOST_SELECT 1.8 V pin for module / host
configuration selection
20
GND  HOST_SELECT
22 GND Ground GND Ground
23 GPIO2 1.8 V GPIO
Driver strength: 1 mA GPIO2 1.8 V GPIO
Driver strength: 6 mA No functional difference
24 GPIO3 1.8 V GPIO
Driver strength: 6 mA GPIO3 1.8 V GPIO
Driver strength: 6 mA No functional difference
25 GPIO4 1.8 V GPIO
Driver strength: 6 mA GPIO4 1.8 V GPIO
Driver strength: 6 mA No functional difference
20
Not supported by “02” product versions