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DNT24PA Datasheet(PDF) 3 Page - Murata Manufacturing Co., Ltd. |
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DNT24PA Datasheet(HTML) 3 Page - Murata Manufacturing Co., Ltd. |
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3 / 7 page  DNT24CA/PA Hardware The major components of these modules include a 2.4 GHz FHSS transceiver and a low current 8-bit microcontroller. These modules operate in the 2.4 GHz ISM band. There are 12 selectable hopping pat- terns providing compatibility with frequency allocations in most regions of the world. The modules also have two selectable RF output power levels: 10 mW and 63 mW. The DNT24CA/PA provide a variety of hardware inter- faces. There are two serial ports plus one SPI port. Ei- ther the primary serial port or the SPI port can be selected for data communications. The second serial port is dedicated to diagnostics. The primary and diag- nostic serial ports support most standard baud rates up to 250.0 kbps. The SPI port supports data rates up to 500 kbps. These modules also include three ADC inputs, two DAC outputs, and six general-purpose digi- tal I/O ports. Four of the digital I/O ports support an optional interrupt-from-sleep mode when configured as inputs. The DNT24CA is designed for solder reflow mounting. The DNT24PA is designed for plug-in con- nector mounting. DNT24CA/PA Firmware DNT24CA/PA firmware operates using hybrid Ad Hoc TDMA channel access optimized for periodic burst transmissions. DNT24CA/PA firmware operates “out of the box” using point-to-point transparent serial mode, with point-to-multipoint, peer-to-peer and store & forward system topologies also supported. The firmware provides the user with a rich set of con- figuration options including a choice of hopping pat- terns, hopping dwell times, serial and/or SPI data port operation, serial and SPI data rate selection, RF out- put power selection, plus configurable analog and digi- tal 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. Sensor 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 © 2011-2012 by RF Monolithics, Inc. DNT24CA/PA - 09/26/12 1 8 1 9 2 0 2 1 2 2 2 3 1 7 1 6 2 4 2 5 2 6 1 5 1 4 1 3 1 2 1 1 1 0 9 8 7 6 5 D N T 2 4 C A / D N T 2 4 P A B l o c k D i a g r a m 2 7 M i c r o c o n t r o l l e r 4 3 2 1 R e g G N D A C T ( D I A G _ T X ) / D C D ( D I A G _ R X ) G P I O 0 R A D I O _ T X D R A D I O _ R X D G P I O 4 ( / H O S T _ C T S ) G P I O 5 ( / H O S T _ R T S ) D A C 0 G P I O 2 G P I O 1 G P I O 3 ( D A V ) D A C 1 V C C G N D + 3 . 3 V 2 8 2 9 3 0 2 . 4 G H z T r a n s c e i v e r I R Q 0 I R Q 1 / D C L K D A T A P L L _ L O C K S C K S D I S D O n S S _ D A T A n S S _ C O N F I G R F I O T / R T / R P W R P R E F i l t e r C h i p A n t e n n a Figure 1 |
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