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NCN5151 Dataheets PDF



Part Number NCN5151
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Wired M-BUS Slave Transceiver
Datasheet NCN5151 DatasheetNCN5151 Datasheet (PDF)

NCN5151 Wired M-BUS Slave Transceiver with Low Power Mode Support Description The NCN5151 is a single−chip integrated slave transceiver for use in two−wire Meter Bus (M−BUS) slave devices and repeaters. The NCN5151 reuses the NCN5150 features and adds two low power modes: a 2−wire low power mode dedicated to System for meter Communication and Readout for powerless meters (SCR) and a 3−wire low power mode allowing support for wireless applications. When configured in low power mode, the transce.

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NCN5151 Wired M-BUS Slave Transceiver with Low Power Mode Support Description The NCN5151 is a single−chip integrated slave transceiver for use in two−wire Meter Bus (M−BUS) slave devices and repeaters. The NCN5151 reuses the NCN5150 features and adds two low power modes: a 2−wire low power mode dedicated to System for meter Communication and Readout for powerless meters (SCR) and a 3−wire low power mode allowing support for wireless applications. When configured in low power mode, the transceiver will not behave anymore as a constant current source in order to save energy. When configured and used in M−BUS mode, the NCN5151 transceiver provides all of the functions needed to satisfy the European Standards EN 13757−2 and EN 1434−3 describing the physical layer requirements for M−BUS. It includes a programmable power level of up to 6 unit loads, which are available for use in external circuits through a 3.3 V LDO regulator. Features • Single−chip M−BUS Transceiver • 2 and 3−Wire Low Power Modes with Selection Input Pins • Integrated 3.3 V VDD LDO Regulator with Extended Peak Current Capability of 15 mA • Supports Powering Slave Device from the Bus • Adjustable Constant Current Sink Up to 6 Unit Loads in M−Bus Mode • Adjustable Current Limit up to 2 Unit Loads in Low Power Mode • Current budget of 0.88 mA minimum for external circuits • Low Turn−ON/OFF Levels for Low Bus Voltage Operation • Polarity Independent • Power−Fail Function (M−Bus mode) • UART Communication Speeds up to 38400 baud • Fast Startup − No External Transistor Required on STC Pin • Industrial Ambient Temperature Range of −40°C to +85°C • These are Pb-free Devices Typical Applications • Multi−Energy Utility Meters ♦ Water ♦ Gas ♦ Electricity ♦ Heating systems Related Standards − European Standard EN 13757−2, EN 1434−3 For more information visit www.m-bus.com www.onsemi.com NQFP−20 MN SUFFIX CASE 485E MARKING DIAGRAMS 20 1 NCN 5151 ALYW G A = Assembly Location L = Wafer Lot (optional) Y = Year W = Work Week G = Pb-free Package ORDERING INFORMATION See detailed ordering and shipping information on page 19 of this data sheet. © Semiconductor Components Industries, LLC, 2015 April, 2015 − Rev. 2 1 Publication Order Number: NCN5151/D NCN5151 RIS OD RXI RX VDD GND 1 BUSL1 2 BUSL2 3 VB 4 PMODE 5 20 19 18 17 16 NCN5151 QFN20 15 3WLPM 14 NC 13 VIO 12 TX 11 TXI 6 7 8 9 10 STC RIDD PF SC 2PWLPM Figure 1. Pin Out NCN5151 in 20−pin NQFP (Top View) Table 1. NCN5151 PINOUT Signal Name Type Pin Number Pin Description GND Ground 1 Ground BUSL1 BUSL2 Bus Bus 2 Bus line. Connect to bus through series resistors. Connections are polarity independent. 3 VB Power 4 Rectified bus voltage PMODE Output 5 Power Mode output indicating the voltage level on VB pin STC Output 6 Storage capacitor pin. Connect to bulk storage capacitor (typically 100 mF − 470 mF, minimum 10 mF). RIDD Input 7 Mark current adjustment pin. Connect to programming resistor. PF Output 8 Power Fail, active low (disabled in low power mode) SC Output 9 Mark bus voltage level storage capacitor pin. Connect to ceramic capacitor (typically 220 nF). 2WLPM Input 10 2−Wire Low Power Mode selection input TXI Output 11 UART Data output (inverted) TX Output 12 UART Data output VIO Input 13 I/O pins (RX, RXI, TX, TXI, PF) high level voltage NC − 14 Leave this pin floating. 3WLPM Input 15 3−Wire Low Power Mode selection input VDD Power 16 Voltage regulator output. Connect to minimum 1 mF decoupling capacitor. RX Input 17 UART Data input RXI Input 18 UART Data input (inverted) OD Output 19 Open Drain output (active low). Used for the slave to master communication in 3−Wire Low Power mode RIS Input 20 Modulation current adjustment pin www.onsemi.com 2 13 VIO 5 PMODE 4 VB RIDD STC 7 6 16 VDD 2WLPM 10 3WLPM 15 NCN5151 PF 8 VIO Buffer VIO_BUF LP_TX VB Monitor Power Fail Detect VB_INT 3−Wire LPM Transmitter CS1 STC Clamp 3.3 V LDO & POR Low Power Logic STC Voltage Monitor LP_CTL LP_TX VIO_BUF Receiver ECHO Transmitter 19 OD 2 BUSL1 3 BUSL2 9 SC 11 TXI 12 TX 17 RX 18 RXI CS_TX 1 20 Thermal Shutdown GND RIS Figure 2. NCN5151 Block Diagram NCN5151 PC20130527.1 www.onsemi.com 3 NCN5151 Table 2. ABSOLUTE MAXIMUM RATINGS Symbol Parameter Min Max Unit TJ Junction temperature −40 +150 °C TS Storage temperature −55 +150 °C VBUS VTX, VTXI VRX, VRXI, VIO Bus voltage (|BUSL1 − BUSL2|) Voltage on pin TX, TXI Voltage on pin RX, RXI, VIO −50 50 V −0.3 7.5 V −0.3 5.5 V VOD Voltage on pin OD −0.3 40 V V3WLPM Voltage on pin 3WLPM −0.3 3.6 V V2WLPM Voltage on pin 2WLPM −0.3 3.6 V VPMODE Voltage on pin PMODE −0.3 3.6 V ESDHBM ESD Rating − Human Body Model 4.0 − kV ESDMM ESD Rating − Machine Model 250 − V ESDCDM ESD Rating − Charged Device Model 750 − V Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should n.


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