Data Sheet

SGW111X BLE Modules Series Datasheet
Page 14 of 25
7.3.1. Serial interfaces
The SGW111X series provides the following serial communication interfaces:
o 2x UART interfaces: 4-wire universal asynchronous receiver/transmitter interface used for
AT command interface, data communication, and u-connect software upgrades using the
Software update +UFWUPD AT command
o 3x SPI interfaces: Up to three serial peripheral interfaces can be used simultaneously
o 1x QSPI interface: High speed interface used to connect to the external flash memories
o 2x I2C interfaces: Inter-Integrated Circuit (I2C) interface for communication with digital
sensors
o 1x I2S interface: Used to communicate with external audio devices
o 1x USB 2.0 interface: The USB device interface to connect to the upstream host
7.3.2. Analog interfaces
8 out of the 48 digital GPIOs can be multiplexed to analog functions. The following analog
functions are available:
o 1x 8-channel ADC
o 1x Analog comparator
(*)
o 1x Low-power analog comparator
(*)
REMARK:
(*): Only one comparator can be used at any given point of time.
7.3.3. Module Reset
The modules can be reset using one of the following ways:
o Low level on the nRESET (P0.18) input pin, normally kept high using an internal pull-up. This
causes an “external” or “hardware” reset of the module
o Using the AT+CPWROFF command. This causes an “internal” or “software” reset of the
module
7.3.4. Debug and Programming interfaces
The SGW111X series modules provides an SWD interface for flashing and debugging. The SWD
interface consists of two pins - SWDCLK and SWDIO.