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DNT2400C Datasheet(PDF) 3 Page - Murata Manufacturing Co., Ltd. |
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DNT2400C Datasheet(HTML) 3 Page - Murata Manufacturing Co., Ltd. |
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3 / 7 page  DNT2400 Hardware The major components of the DNT2400 include a 2.4 GHz FHSS transceiver and a low current 32-bit microcontroller. The DNT2400 operates in the 2.4 GHz ISM band. The module includes nine frequency subbands and 37 total fre- quency channels to support the various 2.4 GHz frequency allocations used throughout the world. The DNT2400 has three selectable RF output power levels: 1, 10, and 63 mW. Also, there are four selectable RF transmission rates: 38.4, 115.2, 200 and 500 kb/s. The DNT2400 includes a low-noise receiver preamplifier and a high efficiency transmitter amplifier, providing excel- lent range in outdoor applications. The DNT2400 provides a variety of hardware interfaces. There are two serial ports plus one SPI port. Either the pri- mary serial port or the SPI port can be selected for data communications. The second serial port is dedicated to di- agnostics. The primary and diagnostic serial ports support standard rates from 1.2 to 460.8 kb/s. The SPI port sup- ports data rates from 6.35 to 80.64 kb/s. Also included are three 10-bit ADC inputs, two 8-bit PWM outputs, and six general-purpose digital I/O ports. Four of the digital I/O ports support an optional interrupt-from-sleep mode when configured as inputs. The radio is available in two mounting configurations. The DNT2400C is designed for solder reflow mounting, and the DNT2400P is designed for plug-in connector mounting. DNT2400 Firmware The DNT2400 firmware can operate using either TDMA or CSMA channel access modes. TDMA supports up to 16 remotes with rapid, deterministic channel latency. CSMA provides carrier-sense managed channel access for an unlimited number of low-traffic remotes. DNT2400 firm- ware will operate “out of the box” using point-to-point trans- parent serial mode, with point-to-multipoint, peer-to-peer and tree-routing network topologies also supported. DNT2400 firmware provides the user with a rich set of con- figuration options including a choice of hopping patterns, hopping dwell times, RF data rates, serial or SPI data port operation, serial and SPI data rate selection, RF output power selection, plus configurable analog and digital I/O lines. Data integrity is protected by 24-bit error detection, with optional ACK and automatic transmission retries or redundant transmissions. 128-bit AES encryption provides a high level of data security for sensitive applications. Sen- sor networks can take advantage of timer or event-based data reporting and remote node sleep cycling for extended battery life. www.RFM.com E-mail: info@rfm.com Page3of7 ©2009-2010 by RF Monolithics, Inc. DNT2400 - 04/29/10 2 3 2 4 2 5 2 6 2 7 2 8 2 2 2 1 2 9 3 0 3 1 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 8 7 6 5 D N T 2 4 0 0 B l o c k D i a g r a m 3 2 3 3 3 4 3 6 M i c r o c o n t r o l l e r 4 3 2 1 R e g F i l t e r F i l t e r V C C P W M 0 P W M 1 G P I O 0 G P I O 1 G P I O 2 G P I O 3 G N D R F T r a n s c e i v e r C L K I N T C S n R F I O T / R T / R P W R P R E F i l t e r 3 5 1 9 2 0 3 7 3 8 3 9 4 0 S I S O P K T D E T R e g 3 . 3 V 3 . 6 V P K T _ D E T R S V D A D C _ R E F R S S I S L E E P A D C 2 A D C 1 A D C 0 E X _ S Y N C D I A G _ T X D I A G _ R X / C F G R F I O Figure 1 |
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