Microchip Technology RN41, Руководство пользователя

Страница: 4 / 28

RN41/RN41N
DS50002280C-page 4

2014-2022 Microchip Technology Inc.
1.0 DEVICE OVERVIEW
The RN41/RN41N module is a small form factor, low-
power, class 1 Bluetooth radio that is ideal for
designers who want to add wireless capability to their
products without spending significant time and money
developing Bluetooth-specific hardware and software.
The RN41/RN41N supports multiple interface
protocols, is simple to design in and is fully certified,
making it a complete embedded Bluetooth solution.
With its high-performance, chip antenna (RN41) or
external antenna (RN41N) and support for Bluetooth
EDR, the RN41/RN41N delivers up to a 3-Mbps data
rate for distances up to 100 meters.
1.1 MCU Interface
The RN41/RN41N module is managed through ASCII
commands via the UART and/or PIO signals. A MCU
(micro-controller-unit) or host processor sends com-
mands to module to configure features, read status and
manage Bluetooth data connections.
As shown in
Figure 1-1 , the UART TX and RX are
required to communicate with module and transfer data
across Bluetooth SPP connection.
Connecting the hardware flow control lines CTS and
RTS is highly recommended for applications that
transmits a continuous stream of data.
The module can be configured locally via the UART or
over-the-air. To support instant cable replacement,
auto-discovery/pairing does not require software con-
figuration. Additionally, the module supports auto-con-
nect central, I/O pin (DTR) and character-based trigger
modes.
FIGURE 1-1: RN41/RN41N TO MCU
INTERFACE
Table 1-1 , Table 1-2 , Table 1-3 , Table 1-4 and Table 1-
5 provide the module’s environmental conditions, elec-
trical characteristics, dimensions, radio characteristics
and digital I/O characteristics.
1.2 ASCII Command and Data
Interface
The “ Bluetooth Data Module Command Reference and
Advanced Information User’s Guide ” provides a com-
plete description of the ASCII command and data inter-
face for the RN41/RN41N module.
TABLE 1-1: ENVIRONMENTAL CONDITIONS
Parameter Value
Temperature Range (Operating) -40
o
C ~ 85
o
C
Temperature Range (Storage) -40
o
C ~ 85
o
C
Relative Humidity (Operating)

90%
Relative Humidity (Storage)

90%
Moisture Sensitivity Level 3
TABLE 1-2: ELECTRICAL CHARACTERISTICS
Parameter Min. Typ. Max. Units
Supply Voltage (DC) 3.0 3.3 3.6 V
RX Supply Current — 35 60 mA
TX Supply Current — 65 100 mA
Average Power Consumption
Standby/Idle (Default Settings) — 25 — mA
Connected (Normal Mode) — 30 — mA
Connected (Low-Power Sniff) — 8 — mA
Standby/Idle (Deep Sleep Enabled) 250 2.5 — mA