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33742 Datasheet(PDF) 1 Page - Freescale Semiconductor, Inc |
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33742 Datasheet(HTML) 1 Page - Freescale Semiconductor, Inc |
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1 / 70 page  Document Number: MC33742 Rev. 11, 6/2008 Freescale Semiconductor Advance Information * This document contains certain information on a new product. Specifications and information herein are subject to change without notice. © Freescale Semiconductor, Inc., 2007-2008. All rights reserved. System Basis Chip with Enhanced High Speed CAN Transceiver The 33742 and the 33742S are SPI-controlled System Basis Chips (SBCs) combining many frequently used functions along with a CAN 2.0- compliant transceiver, used in many automotive electronic control units (ECUs). The 33742 SBC has a fully protected fixed 5.0V low dropout internal regulator with current limiting, over-temperature pre-warning, and reset. A second 5.0V regulator can be implemented using external pass PNP bipolar junction pass transistor driven by the SBC’s external V2 sense input and V2 output drive pins. The SBC has four main operating modes: Normal, Standby, Stop, and Sleep mode. Additionally there is an internally switched high side power supply output, four wake-up inputs pins, a programmable window watchdog, interrupt, reset, and a SPI module for communication and control. The high speed CAN A and B transceiver is available for inter- module communication. Features • 1.0Mbps CAN transceiver bus interface with bus diagnostic capability • SPI control at frequencies up to 4.0Mhz • 5.0V low dropout voltage regulator with current limiting, over- temperature prewarning, and output monitoring and reset • a Second 5.0V regulator capability using an external series pass transistor • Normal, Standby, Stop, and Sleep modes of operation with Low sleep and Stop mode current • A high side (HS) switch output driver for controlling external circuitry. • Pb-free packaging designated by suffix code EG and EP Figure 1. 33742 Simplified Application Diagram SYSTEM BASIS CHIP 33742 33742S ORDERING INFORMATION Device Temperature Range (TA) Package MC33742DW/R2 -40°C to 125°C 28 SOICW MCZ33742EG/R2 MC33742SDW/R2 MCZ33742SEG/R2 MC33742EP/R2 48 QFN DW SUFFIX EG SUFFIX (PB-FREE) 98ASB42345B 28-PIN SOICW EP SUFFIX (PB-FREE) 98ASA10825D 48-PIN QFN 33742 VPWR 5.0V VSUP VDD MCU CS SCLK MOSI MISO GND SPI CS SCLK MOSI MISO RST INT TXD RXD GND CANL CANH HS WDOG L0 L1 L2 L3 V2 V2CTRL Twisted Pair CAN Bus V2 VPWR Safe Circuitry ECU Local Circuitry |
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