Microchip Technology RN1810, Руководство пользователя

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RN1810/RN1810E
DS50002460C-page 14

2016-2021 Microchip Technology Inc.
2.2 MODE0 and MODE1 Pins
The MODE pins must be tied to the voltage levels for
normal operation of the module. Refer to
Table 2-1 .
The MODE pins are sampled at power on and wake-
up. Refer to
Section 2.4, "Sleep and Wakeup" . In the
case of UART0_RX/MODE0 pin, a 100 k

pull-up
resistor is required, and the host MCU allows an active-
high signal during power on and wake-up to ensure that
the module start-up in normal operation. Once the
module is operational, the pin becomes the
UART0_RX pin.
2.3 VDD and GND Pin
The RN1810/RN1810E wireless module contains an
integrated power management unit that generates all
necessary voltages required by the internal circuitry.
The module is powered from a single voltage source.
Table 2-2 lists the recommended bypass capacitors.
The capacitors must be closely placed to the module.
2.4 Sleep and Wakeup
The module enters the lowest power mode when the
SLEEP pin is asserted high. WLAN and network
connection information is preserved.
The module can wake-up when WAKEUP pin is
asserted low. The module restores the saved
information after wakeup.
2.5 Module Reset
There are several ways to Reset the module:
• A Power-On Reset is automatically generated
when power is applied. This Reset is intended to
initialize the module when a new battery is
connected.
• Perform an external Power-On Reset by asserting
the RESET pin low.
• Perform a soft Power-On Reset using software
commands
The RESET pulse duration must be a minimum of
650 ns.
2.6 Factory Reset
The Factory Reset is intended to initialize provisioning
information stored in flash memory by asserting
FUNC_CONFIG Low to High five times with 300 ms
between transitions.
TABLE 2-1: MODE PIN OPERATION
Pin Condition
MODE1 Connect to GND
UART0_RX/MODE0 Connect to V
DD
via
100 k

pull-up resistor
TABLE 2-2: RECOMMENDED BYPASS
CAPACITORS
Pin Symbol Bypass Capacitors
4 V
DD
0.1 µF and 2.2 µF
15 V
DD
0.1 µF and 2.2 µF
35 V
DD
0.1 µF and 2.2 µF