RN2483

DS50002346B-page 8

 2015 Microchip Technology Inc.

3.0

TYPICAL HARDWARE CONNECTIONS

Figure 3-1 shows the typical hardware connections.

FIGURE 3-1:

HARDWARE CONNECTIONS

3.1

INTERFACE TO HOST MCU

The RN2483 module has a dedicated UART interface

to communicate with a host controller. Optional

handshake lines are supported in future firmware

Command Reference User’s Guide” (DS40001784)

provides a detailed UART command description.

Table 3-1 shows the default settings for the UART

communication.

3.2

GPIO PINS (GPIO0-GPIO13)

The module has 14 GPIO pins. These lines can be

connected to switches, LEDs, and relay outputs. The

pins can be either logic inputs or outputs, and some

pins have analog input capability that can be accessed

via the module firmware. These pins have limited sink

and source capabilities. Electrical characteristics are

described in Table 2-2. For more information, see

Reference User’s Guide” (DS40001784).

3.3

RF CONNECTIONS (RFL, RFH)

RFL is the RF analog port for the lower frequency band

(433 MHz) while RFH is for the higher frequency band

(868 MHz). When routing RF paths, use proper strip

lines with an impedance of 50 Ohm.

3.4

RESET PIN

The Reset pin of the module is an active-low logic

input.

3.5

POWER PINS

It is recommended to connect power pins (Pin 12 and

34) to a stable supply voltage with sufficient source

current. Table 2-3 shows the current consumption.

Additional filtering capacitors are not required but used

to ensure stable supply voltage in a noisy environment.

Note 1: Optional handshake lines are supported in future firmware releases.

TABLE 3-1:

DEFAULT UART SETTINGS

Specification

Description

Baud Rate

57600 bps

Packet Length

8 bit

Parity Bit

No

Stop Bits

1 bit

Hardware Flow Control

No