u-blox Malmo AB 000501 사용자 설명서
7
2.2 General
Purpose
I/O
All General Purpose Input and Output are logic level 0V – 3.3V.
Use VSS as low-level reference and VCC_3V3 as high-level reference.
Use VSS as low-level reference and VCC_3V3 as high-level reference.
Maximum load on all GPIO is 2mA.
* Pull-up internal.
Pin nr.
Pin Name
Type
Description
9
Mode 1
GPIO
10k
Ω
pull-up* to 3.3V, reserved for
future use
10
Mode 0
GPIO
10k
Ω
pull-up* to 3.3V. The level on
this pin during power up
selects RS-232(H) or logic(L) level
UART-communication
selects RS-232(H) or logic(L) level
UART-communication
11
Reset
Open collector
10k
Ω
pull-up* to 3.3V. Pulled low
by internal reset logic during power
up. External logic can pull this pin
low to reset module.
up. External logic can pull this pin
low to reset module.
12
Firq
GPIO
10k
Ω
pull-up* to 3.3V, reserved for
future use
19
P8
GPIO
Reserved for future use
20
P7
GPIO
Reserved for future use
21
P6
GPIO
Input for switch_0.
3.3V = switch is open, 0V = switch
is closed
3.3V = switch is open, 0V = switch
is closed
22
P5
GPIO
Reserved for future use
23
P4
GPIO
Reserved for future use
24
P3
GPIO
Reserved for future use
25
RXD1
GPIO
Reserved for future use
26
TXD1
GPIO
Reserved for future use
27
SCK1
GPIO
Reserved for future use
28
B-LED
GPIO
Output for blue LED driver
29
R-LED
GPIO
Output for red LED driver
30
G-LED
GPIO
Output for green LED driver
Table 2 – I/O-pins