N11
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
6
2.2
Pin Definition
P: indicates power supply pins
NC: indicates pins that are not supported and must not be connected
DI: indicates digital signal input pins
DO: indicates digital signal output pins
AI: indicates analog signal input pins
AO: indicates analog signal output pins
Table 2-1
N11 Pin definition
Pin
Pin Name
I/O
Function
Electrical
Level
Characteristics (V)
Remarks
Power supply and Switch Interfaces
2, 3
VBAT
P
Power supply
input
3.4 V to 4.3 V (3.9
V
is
recommended)
1, 4,
10,
19
GND
P
Ground
5
ON/OFF
DI
ON/OFF input
0<V
IL
<0.6;
2.1<V
IH
<VBAT
Low-level
pulse
triggers ON/OFF
state.
15
VDDIO_2P8
P
2.8V
power
supply output
Used only for level
shifting
and
to
supply power for
IO. Load capacity
< 50 mA
UART Interface
12
UART_TXD
DO
UART
data
transmit
0<V
IL
<0.6;
2.1<V
IH
<3.1;
0<V
OL
<0.42;
2.38<V
OH
<2.8
Used
for
command sending
and receiving
11
UART_RXD
DI
UART
data
receive
SIM Card
6
SIM_DATA
DI/O SIM card data
0<V
IL
<0.25*VSIM;
0.75*VSIM<V
IH
<VSIM;
Compatible
with
1.8/3.0 V SIM card
7
SIM_CLK
DO
SIM card clock
