RN-42/RN-42-N Data Sheet
www.rovingnetworks.com
DS-RN42-V1.0 2/17/2010
Class 2 Bluetooth® Module
Features
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Fully qualified Bluetooth 2.1/2.0/1.2/1.1
module
Bluetooth v2.0+EDR support
Available with on board chip antenna (RN-
42) and without antenna (RN-42-N)
Postage stamp sized form factor, 13.4mm x
25.8 mm x 2mm (RN-42) and 13.4mm x 20
mm x 2 mm (RN-42-N)
Low power
(26uA sleep, 3mA connected,
30mA transmit)
UART (SPP or HCI) and USB (HCI only)
data connection interfaces.
Sustained SPP data rates - 240Kbps (slave),
300Kbps (master)
HCI data rates - 1.5Mbps sustained, 3.0Mbps
burst in HCI mode
Embedded Bluetooth stack profiles included
(requires no host stack):
GAP, SDP,
RFCOMM and L2CAP protocols, with SPP
and DUN profile support.
Bluetooth SIG certified
Castellated SMT pads for easy and reliable
PCB mounting
Certifications: FCC, ICS, CE
Environmentally friendly, RoHS compliant
Applications
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Cable replacement
Barcode scanners
Measurement and monitoring systems
Industrial sensors and controls
Medical devices
Barcode readers
Computer accessories
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Description
The RN42 is a small form factor, low power, highly
economic Bluetooth radio for OEM’s adding wireless
capability to their products. The RN42 supports
multiple interface protocols, is simple to design in and
fully certified, making it a complete embedded
Bluetooth solution. The RN 42 is functionally
compatible with RN 41. With its high performance on
chip antenna and support for Bluetooth® Enhanced
Data Rate (EDR), the RN42 delivers up to 3 Mbps
data rate for distances to 20M. The RN-42 also
comes in a package with no antenna (RN-42-N).
Useful when the application requires an external
antenna, the RN-42-N is shorter in length and has RF
pads to route the antenna signal.
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Block Diagram
Crystal
VCC
GND
PIO4
PIO5
PIO6
USB
UART
PCM
RF
Switch
PA
BALUN
CSR BlueCore-04
External
Flash
Memory
809 University Avenue
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Los Gatos, CA 95032
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Tel (408) 395-6539
• info@RovingNetworks.com
~1~
RN-42/RN-42-N Data Sheet
www.rovingnetworks.com
DS-RN42-V3.1 2/17/2010
Overview
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Baud rate speeds: 1200bps up to 921Kbps, non-standard baud rates can be programmed.
Class 2 radio, 60 feet (20meters) distance, 4dBm output transmitter, -80dBm typical receive sensitivity
Frequency 2402 ~ 2480MHz,
FHSS/GFSK modulation, 79 channels at 1MHz intervals
Secure communications, 128 bit encryption
Error correction for guaranteed packet delivery
UART local and over-the-air RF configuration
Auto-discovery/pairing requires no software configuration (instant cable replacement).
Auto-connect master, IO pin (DTR) and character based trigger modes
Digital I/O Characteristics
2.7V
≤
VDD
≤
3.0V
Input logic level LOW
Input logic level HIGH
Output logc level LOW
Output logic level HIGH
All I/O’s (except reset) default to weakpull down
Min
-0.4
0.7VDD
-
VDD-0.2
+0.2
Typ.
-
-
-
-
+1.0
Max.
+0.8
VDD+0.4
0.2
-
+5.0
Unit
V
V
V
V
uA
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
~2~
RN-42/RN-42-N Data Sheet
www.rovingnetworks.com
DS-RN42-V3.1 2/17/2010
Environmental Conditions
Parameter
Temperature Range (Operating)
Temperature Range (Storage)
Relative Humidity (Operating)
Relative Humidity (Storage)
Value
o
-40 C ~ 85 C
o
o
-40 C ~ 85 C
≤90%
≤90%
o
Electrical Characteristics
Parameter
Supply Voltage (DC)
Min
3.0
Typ.
3.3
2
20
3
26
Max.
3.6
Unit
V
mA
mA
mA
uA
Average power consumption
Standby/Idle (default settings)
Connected (normal mode)
Connected (low power Sniff)
Standby/Idle (Deep sleep enabled)
0
Radio Characteristics
Parameter
Sensitivity @ 0.1%BER
Freq.
(GHz)
2.402
2.441
2.480
2.402
2.441
2.480
2.402
2.441
2.480
Min
-
-
-
0
0
0
-
-
-
-
-
-
140
140
140
140
140
140
Typ
-80
-80
-80
2
2
2
5
5
5
900
15
13
165
165
165
190
190
190
Max
-86
-86
-86
4
4
4
75
75
75
1000
-
-
175
175
175
-
-
-
Bluetooth
Specification
≤
-70
Units
dBm
dBm
dBm
dBm
dBm
dBm
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
kHz
RF Transmit Power
Initial Carrier Frequency
Tolerance
20dB bandwidth for modulated
carrier
Drift (Five slots packet)
Drift Rate
f1
avg
Max Modulation
≤
4
75
≤
1000
40
20
>140
f2
avg
Min Modulation
2.402
2.441
2.480
2.402
2.441
2.480
115
Range Characteristics (Approximate range in office environment)
Range
After One Wall
After Two Walls
After Three
Walls
RN-42
55 feet
60 feet
36 feet
RN-41
150 feet
130 feet
60 feet
The above readings are approximate and may vary depending upon the RF environment. Bluetooth hops in a
pseudo-random fashion over the 79 frequencies in the ISM band to adapt to the interference. Data throughput
and range vary depending on the RF interference environment.
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
~3~
RN-42/RN-42-N Data Sheet
www.rovingnetworks.com
DS-RN42-V3.1 2/17/2010
Pin Description
RF PAD
GND
GND
SPI MOSI
PIO6
PIO7
RESET
SPI_CLOCK
PCM_CLK
PCM_SYNC
PCM_IN
PCM_OUT
VDD
GND
1
2
3
4
24
23
22
21
20
SPI_MOSI
SPI_CSB
PIO4
PIO5
PIO3
PIO2
USB_D-
USB_D+
UART_CTS
UART_RST
UART_TX
UART_RX
GND
SPI MOSI
PIO6
PIO7
RESET
SPI_CLOCK
PCM_CLK
PCM_SYNC
PCM_IN
PCM_OUT
VDD
GND
1
2
3
4
GND
27 26 25
24
23
22
21
SPI_MOSI
SPI_CSB
PIO4
PIO5
PIO3
PIO2
USB_D-
USB_D+
UART_CTS
UART_RST
UART_TX
UART_RX
RN-42-N
RN-42
5
6
7
8
9
10
11
12
5
6
7
8
9
10
11
12
PIO10
20
19
18
17
16
15
14
13
19
18
17
16
15
14
13
35 29 34 33 32 31 28 30
PIO10
PIO11
PIO9
PIO8
AIO0
GND
GND
AIO1
35 29 34 33 32 31 28 30
PIO11
PIO9
PIO8
AIO0
GND
GND
AIO1
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
30
31
32
33
34
35
Name
GND
SPI MOSI
PIO6
PIO7
RESET
SPI_CLK
PCM_CLK
PCM_SYNC
PCM_IN
PCM_OUT
VDD
GND
UART_RX
UART_TX
UART_RTS
UART_CTS
USB_D+
USB_D-
PIO2
PIO3
PIO5
PIO4
SPI_CSB
SPI_MISO
GND
RF Pad
GND
AIO0
PIO8
PIO9
PIO10
PIO11
AIO1
Description
Programming only
Set BT master (HIGH=auto-master mode)
Set Baud rate (HIGH = force 9600, LOW = 115K
or firmware setting)
Active LOW reset
Programming only
PCM interface
PCM interface
PCM interface
PCM interface
3.3V regulated power input
UART receive Input
UART transmit output
UART RTS, goes HIGH to disable host
transmitter
UART CTS, if set HIGH, disables transmitter
USB port
USB port
Status, HIGH when connected, LOW otherwise
Auto discovery = HIGH
Status, toggles based on state, LOW on connect
Set factory defaults
Programming only
Programming only
GND for RN42-N
RF Pad for RN42-N
GND for RN42-N
Optional analog input
Status (RF data rx/tx)
IO
IO (remote DTR signal)
IO (remote RTS signal )
Optional analog input
Default
No Connect
Input to RN42with weak pulldown
Input to RN42 with weak pulldown
Input to RN42 with 1K pullup
No Connect
No Connect
No Connect
No Connect
No Connect
Voltage
0V
3V
0V-3.3V
0V-3.3V
Input to RN42
High level output from RN42
Low level output from RN42
Low level input to RN42
Pull up 1.5K when active
Output from RN42
Input to RN42 with weak pulldown
Output from RN42
Input to RN42 with weak pulldown
No Connect
No Connect
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
Not Used
Output from RN42
Input to RN42 with weak pulldown
Input to RN42 with weak pulldown
Input to RN42 with weak pulldown
Not Used
0V-3.3V
0V-3.3V
0V-3.3V
0V-3.3V
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
~4~
RN-42/RN-42-N Data Sheet
www.rovingnetworks.com
DS-RN42-V3.1 2/17/2010
Typical Application Circuit
Since the RN 41 and RN 42 are functionally compatible, this application diagram applies to RN 41 and RN 42.
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
~5~
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