2.0 Application Information ................................................................................................................................................................. 8
4.0 Ordering Information ................................................................................................................................................................... 19
Appendix A: Revision History ............................................................................................................................................................... 21
The Microchip Web Site ....................................................................................................................................................................... 23
Customer Support ................................................................................................................................................................................ 23
Product Identification System ............................................................................................................................................................... 25
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2014 Microchip Technology Inc.
DS50002280A-page 3
RN41/RN41N
1.0
DEVICE OVERVIEW
FIGURE 1-1:
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.
RN41/RN41N TO MCU
INTERFACE
1.1
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.
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 master, I/O pin (DTR), and character-based trigger
modes.
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
-40
o
C ~ 85
o
C
-40
o
C ~ 85
o
C
90%
90%
1
Temperature Range (Operating)
Temperature Range (Storage)
Relative Humidity (Operating)
Relative Humidity (Storage)
Moisture Sensitivity Level
TABLE 1-2:
ELECTRICAL CHARACTERISTICS
Parameter
Min.
3.0
—
—
—
—
—
250
Typ.
3.3
35
65
25
30
8
2.5
Max.
3.6
60
100
—
—
—
—
Units
V
mA
mA
mA
mA
mA
mA
Supply Voltage (DC)
RX Supply Current
TX Supply Current
Average Power Consumption
Standby/Idle (Default Settings)
Connected (Normal Mode)
Connected (Low-Power Sniff)
Standby/Idle (Deep Sleep Enabled)
DS50002280A-page 4
2014 Microchip Technology Inc.
RN41/RN41N
TABLE 1-3:
Size
Weight
MODULE DIMENSIONS
RN41
13.4 x 25.8 x 2
0.045
0.040
RN41N
13.4 x 20 x 2
mm
oz.
Units
Parameter
TABLE 1-4:
RADIO CHARACTERISTICS
Parameter
Frequency
(GHz)
2.402
2.441
2.480
Min.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
140
140
140
140
140
140
Typ.
-80
-80
-80
16.3
17.0
18.4
11.9
10.9
9.9
5
5
5
900
15
13
165
165
165
190
190
190
Max.
-86
-86
-86
—
—
—
—
—
—
75
75
75
1000
—
—
175
175
175
—
—
—
115
≤
1000
40
20
> 140
75
Bluetooth
Specification
≤
-70
Units
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
Sensitivity at 0.1% BER
RF Transmit Power
RN41
(1)
2.402
2.441
2.480
2.402
2.441
2.480
2.402
2.441
2.480
RF Transmit Power
(1)
RN41N
Initial Carrier Frequency Tolerance
20-dB Bandwidth for Modulated Carrier
Drift (Five Slots Packet)
Drift Rate
∆f1
avg
Maximum Modulation
—
—
—
2.402
2.441
2.480
∆f2
avg
Minimum Modulation
2.402
2.441
2.480
TABLE 1-5:
DIGITAL I/O CHARACTERISTICS
3.0 V
≤
VDD
≤
3.3 V
Min.
-0.4
0.7 VDD
—
VDD - 0.2
+0.2
Typ.
—
—
—
—
+1.0
Max.
+0.8
VDD + 0.4
0.2
—
+5.0
Units
V
V
V
V
A
Input Logic Level Low
Input Logic Level High
Output Logic Level Low
Output Logic Level High
All I/O pins (Except reset) Default to Weak Pull Down
FPGA/CPLD
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