RN-24 / RN25
www.rovingnetworks.com
rn-24-ds v2.3 8/23/2010
Class 1 Bluetooth® Super
Module
Features
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Bluetooth 2.1/2.0/1.2/1.1 and v2.0+EDR
Embedded SPP/DUN stack support, no host or
processor stacks required
Small-form factor 24 Pin DIP package (0.1”
pitch by 0.9” socket width)
Accepts 4Vdc to 24Vdc power (RN-24)
Hardware TTL, RS- 232 and RS-485 levels
RS-485 signaling with auto-direction control
(RN25 only)
UART baud rate: 1200bps up to 921.6Kbps
9 General Purpose Input/Output Pins (4ma
source/sink) controlled via remote commands
2 Channel 8 Bit AD converter (5Hz, 0-1.8VDC )
LEDs indicate connection and RX/TX status
On board antenna or external SMA jack
Low power consumption
(30mA connected,,
<10mA sniff mode)
Programmable over local UART and Bluetooth
Simple ACSII command interface
UART (SPP or HCI) and USB (HCI only) data
connection interfaces
Sustained SPP data rates - 240Kbps (slave),
300Kbps (master)
Embedded Bluetooth stack profiles included
(requires no host stack):
GAP, SDP, RFCOMM
and L2CAP protocols, with SPP and DUN profile
support.
Applications
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Wireless RS232/RS485 cable replacement
Remote equipment monitoring
Scanners, GPS and measurement systems
Industrial sensors and controls
Medical devices
Description
The RN24 transforms your product’s serial
interface into a wireless connection. The RN24 is a
Class 1 Bluetooth radio with auto-connect and
connect on RX data features, enabling your product
to transfer data up to 100M. The RN24 accepts a
wide range of unregulated DC power. The DIP
packaging with GPIO, UART interfaces and AD
converter makes it the perfect prototyping module
and allows products to have optional Bluetooth
capability when the module is plugged in.
The RN-25 has the same powerful Bluetooth
radio and simple ASCI command interface as the
RN-24 but has a RS-485 hardware interface rather
than RS-232.
Block Diagram
Crystal
VCC
GND
PIO4
PIO5
PIO6
USB
UART
PCM
RF
Switch
PA
BALUN
CSR BlueCore-04
External
Flash
Memory
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
~ page 1 ~
DS-RN24_V3 8/23/2010
Overview
UART baud rate speeds: 1200bps up to 921Kbps, non-standard baud rates can be programmed.
Class 1 radio, 330’ (100m) distance, 12dBm 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
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
Power supply voltage RN24
WARNING – Only one source of power must
be supplied.
Parameter
Min
Supply Voltage (DC) using pin 3
3.0
Supply Voltage (DC) using pin 12
5
RX Supply Current
TX Supply Current
Typ.
3.3
-
35
65
3.3VDC nominal
or
5-24VDC unregulated
Max.
Unit
3.6
V
24
V
60
mA
100
mA
NOTE: do not exceed 5 VDC on the RN-25 or permanent damage
to the module will occur!
Power supply voltage RN25
Parameter
Min
Supply Voltage (DC) using pin 3
-
Supply Voltage (DC) using pin 12
5
RX Supply Current
TX Supply Current
5 VDC unregulated on pin12
Typ.
Max.
Unit
-
-
-
5
V
35
60
mA
65
100
mA
Typ.
25
30
8
2.5
Max.
50
Unit
mA
mA
mA
mA
Average power consumption
Standby/Idle (default settings)
Connected (normal mode)
Connected (low power Sniff)
Standby/Idle (lowest power)
Min
250uA
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
DS-RN24_V3 8/23/2010
Digital I/O Characteristics
WARNING: Take care not to exceed the voltage limits to the VCC, TTL SERIAL, and GPIO pins. 0 negative
voltage or voltage exceeding 3.30 VDC can permanently damage the device!
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Use a 10K series resistor on inputs
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GPIO sink current is 4mA max.
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Unused pins should float
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
The RN24 can drive either UART signals on the TTL pins 8-11 or RS232 pins 13-16. WARNING: Driving the TTL
signals at RS232 levels can permanently damage the module. By default the module is configured to drive only
the RS232 pins. To drive the TTL signals you must remove the resistor R7. R7 can be found on the bottom of
the board, near the center.
Remove R7 to enable the UART
TTL signaling on pins 8-11.
This disconnects pins 13-16 from
the UART interface.
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
DS-RN24_V3 8/23/2010
Pin Description
1
24
23
22
21
20
NOTE:
The Power can be applied to
either pin 12, or pin 3, but
NOT
both.
If pin 12 is powered then Pin 3 can be
used as a 3.3V regulated supply
output up to 200mA.
2
3
4
5
6
7
8
9
10
11
12
RN24/RN25
19
18
17
16
15
14
13
32 31 30 29 28 27 26 25
Top view
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
28
29
30
31
32
Name
RESET
GND
VCC
SPI_CS
SPI_CK
SPI_MO
SPI_MI
CTS
TX
RTS
RX
VDD
UART_TX
UART_RX
UART_RTS
UART_CTS
GPIO-7
GPIO-6
GPIO-4
GPIO-3
GPIO-2
RS-485 D+
RS-485 D-
GND
GPIO-11
GPIO-8
GPIO-9
GPIO-10
AD1
AD2
NC
GND
Description
Active HIGH
3.3VDC power
Programming Only
Programming Only
Programming Only
Programming Only
Input, if set HIGH disables transmitter
Transmit, output from the module
Output, goes HIGH to disable host transmitter
Receive, input to the module
RN-24 : 5-24V unregulated DC power
RN-25 : 5 V unregulated DC power
UART Transmit, output from the module
UART Receive, input to the module
Output, goes HIGH to disable host transmitter
Input, if set HIGH disables module transmitter
Default baud rate, HIGH = 9600, LOW = 115K
Enable auto master mode = HIGH
Restore factory defaults
Enable instant cable mode = HIGH
Connection status, connected=HIGH
RS485 signaling
(Only on RN25)
RS485 signaling
(Only on RN25)
Ground
Controls red LED
Controls yellow LED
Optional analog input 0-1.8V
Optional analog input 0-1.8V
Ground
Default
Has 1K pulldown
Mutually exclusive with Pin 12
No Connect
No Connect
No Connect
No Connect
TTL input
TTL output
TTL output
TTL input
Mutually exclusive with Pin 3
RS-232 level signaling
RS-232 level signaling
RS-232 level signaling
RS-232 level signaling
Input to RN24, default = LOW
Input to RN24, default = LOW
Set HIGH then toggle for 5
msec. 3 times
Input to module, default = LOW
Output from module
(Auto direction detect)
(Auto direction detect)
Requires special firmware
Requires special firmware
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
DS-RN24_V3 8/23/2010
Module Dimensions
230 mil
1600 mil
320 mil
245 mil
LED
LED
LED
LED
LED
LED
LED
LED
LED
1
2
Keep metallic components,
connectors, copper traces,
and ground planes away from
antenna area
24
23
22
21
20
1
2
3
4
5
1500 mil
24
23
22
21
20
3
4
5
6
7
8
9
10
RN24/RN25
19
18
17
16
15
14
13
6
7
8
9
10
11
12
RN24/RN25
19
18
17
16
15
14
13
1400 mil
80 mil diameter
Mounting hole
11
12
32 31 30 29 28 27 26 25
110 mil
1000 mil
32 31 30 29 28 27 26 25
100 mi
900 mil
RN24-S/RN25-S
Top view
Antenna
RN24-E/RN25-E
Top view
65 mil
200 mil
1500 mil
Connect with 24 pin DIP (through-hole) 0.1” pitch and 0.9” wide socket
Single row mating sockets use:
Digikey P/N: ED7012-ND (female)
ED7512-ND (male)
809 University Avenue
•
Los Gatos, CA 95032
•
Tel (408) 395-6539
• info@RovingNetworks.com
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