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RN-42/RN-42-N Data Sheet

www.rovingnetworks.com DS-RN42-V1.0 6/21/2011

809 University Avenue • Los Gatos, CA 95032 • Tel (408) 395-6539 • info@RovingNetworks.com

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Class 2 Bluetooth® Module

Features

 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

 Cable replacement

 Barcode scanners

 Measurement and monitoring systems

 Industrial sensors and controls

 Medical devices

 Barcode readers

 Computer accessories

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.

Block Diagram

CSR BlueCore-04

External

BALUN

Switch

Crystal

Flash

Memory

GND

VCC

USB

UART

PCM

PIO6

PIO5

PIO4

Summary of content (10 pages)

PAGE 1
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V1.0 6/21/2011 Class 2 Bluetooth® Module Features  Fully qualified Bluetooth 2.1/2.0/1.2/1.1 module  Bluetooth v2.0+EDR support  Available with on board chip antenna (RN42) 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.
PAGE 2
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 Overview          Baud rate speeds: 1200bps up to 921Kbps, non-standard baud rates can be programmed.
PAGE 3
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 Radio Characteristics Parameter Sensitivity @ 0.1%BER RF Transmit Power Initial Carrier Frequency Tolerance Freq. (GHz) 2.402 2.441 2.480 2.402 2.441 2.480 2.402 2.441 2.480 20dB bandwidth for modulated carrier Drift (Five slots packet) Drift Rate ∆f1avg Max Modulation ∆f2avg Min Modulation 2.402 2.441 2.480 2.402 2.441 2.
PAGE 4
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.
PAGE 5
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 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.
PAGE 6
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 RN-42 Module Dimensions NOTE: All dimensions are in mm 809 University Avenue • Los Gatos, CA 95032 • Tel (408) 395-6539 • info@RovingNetworks.
PAGE 7
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 RN-42-N Module Dimensions NOTE: All dimensions are in mm 809 University Avenue • Los Gatos, CA 95032 • Tel (408) 395-6539 • info@RovingNetworks.
PAGE 8
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 Design Concerns 1. Reset circuit. RN-42 contains a weak pullup to VCC, the polarity of reset on the RN42 is ACTIVE LOW. A power on reset circuit with delay is OPTIONAL on the reset pin of the module. It should only be required if the input power supply has a very slow ramp, or tends to bounce or have instability on power up. Often a microcontroller or embedded CPU IO is available to generate reset once power is stable.
PAGE 9
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 7. Antenna Design. The pattern from the rf_out terminal pad should be designed with 50ohms impedance and traced with straight lines. (see diagram to the right) The rf_out signal line should not run under of near the RN21 module. The GND plane should be on the side of the PCB which the module is mounted. The GND should be reinforced with through-hole connections and other means to stabilize the electric potential.
PAGE 10
RN-42/RN-42-N Data Sheet www.rovingnetworks.com DS-RN42-V3.2 6/21/2011 Copyright © 2011 Roving Networks. All rights reserved. The Bluetooth trademark and logo are registered trademarks and are owned by the Bluetooth SIG, Inc. All other trademarks are property of their respective owners. Roving Networks reserves the right to make corrections, modifications, and other changes to its products, documentation and services at any time.