WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-II
4. Quick start
4.1. Minimal pin configuration
In factory state the modules are immediately ready for operation; the following pins are required
in the minimal configuration:
If the flow control is enabled additionally the pins
and
shall be connected.
We recommend to additionally have the pins
and
accessible in order to
support a fail-safe firmware update. A standard socket on the customer’s PCB for connecting a
flash adapter can be useful for debugging purposes (e.g. a JTAG 2*10 pin header with 2.54mm
pin-to-pin distance).
Implementing the fail-safe firmware update method using the SWD interface is
recommended. Without having the SWD interface available a fail-safe firmware
update on a customer PCB cannot be guaranteed.
If the module has to be connected to a PC, a converter (TTL to RS-232 or TTL to USB) has to
be used. See chapter
for details on all pins. Please refer to the Proteus-II-EV schemes for a
reference design.
The logic level of the module is based on 3V. A 5V logic level must not be
connected directly to the module.
4.2. Power up
After powering the module the
pin shall be hold for another
∆
t of 1ms after the
is
stable to ensure a safe start-up. The module will send a
to indicate "ready
for operation" after the
pin was released.
Applying a reset (e.g. a host temporarily pulling the
pin down for at
least 1ms and releasing it again) after the VCC is stable will also be sufficient.
Order code 2608011x24010
27
Version 1.11 , July 2022