Pin Description - SimCom SIM5320AL User Manual

3.3.1

Pin Description

Table 7: Pin description
Pin type Pin name
UART_RXD
UART_TXD
UART_RTS
UART UART_CTS
UART_DTR
UART_DCD
UART_RI
More pin information refers to chapter 2.2.
Table 8: Logic level
Parameter
Logic low input
Logic high input
Logic low output
Logic high output
Note: VDD_EXT (=2.6V) is e reference voltage in module internal interface.
All pins of all serial ports have 8mA driver capacity.
SIM5320AL_User Manual_V1.01
Figure 18: Null modem
Pin No. I/O
68 I
71 O
66 O
67 I
72 I
70 O
69 O
Min
0
0.7 *VDD_EXT
GND
VDD_EXT -0.2
Smart Machine Smart Decision
Active voltage
H
H
H
H
H
H
H
Max
0.3*VDD_EXT
VDD_EXT +0.3
0.2
VDD_EXT
30
Default Status
Pull-Down
Pull-Up
Pull-Up
Pull-Up
Unit
V
V
V
V
2014-08-20