Spi Interface; Pin Description; Gpio Interface - SimCom SIM5320AL User Manual

on USB data lines. Typically, the capacitance should be less than 4pF @1MHz.
Note ： The SIM5320AL has two kinds of interface (UART and USB) to connect to host CPU.
to five virtual ports: "SIMTECH USB Modem", "SIMTECH NMEA Device", "SIMTECH ATCOM Device",
"SIMTECH Diagnostics interface" and "SIMTECH Wireless Ethernet Adapter".

3.9 SPI Interface

SPI interface of SIM5320AL is master only. It provides a duplex, synchronous, serial communication link
with peripheral devices. Its operation voltage is 1.8V, with clock rates up to 26 MHz.
3.9.1

Pin Description

Table 21: Electronic characteristic
Pin name
SPI_CLK
SPI_CS_N
SPI_MOMI_DATA
SPI_MIMO_DATA
Table 22: Pin description
Pin name
SPI_CS
SPI_MISO_DATA
SPI_CLK
SPI_MOSI_DATA

3.10 GPIO Interface

SIM5320AL provides a limited number of GPIO pins. All GPIOs can be configured as inputs or outputs.
User can use AT Commands to read or write GPIOs status. Refer to ATC document for details.

3.10.1 Pin Description

Table 23: Electronic characteristic
SIM5320AL_User Manual_V1.01
Min
1.65
1.65
1.65
1.65
Pin No. Function
9 SPI chip-select; not mandatory in a point-to-point connection
7 SPI master in/slave out data
6 SPI clock
8 SPI master out/slave in data
Smart Machine Smart Decision
1.8V mode
Typ
1.8
1.8
1.8
1.8
41
USB interface is mapped
Max
1.95
1.95
1.95
1.95
2014-08-20