Analog, Mixed Signal and Power Management MC33742 System Basis Chip (SBC) with Enhanced High Speed CAN Transceiver Applications MC33742 Simplified Application Drawing • Aircraft Systems • Automotive Systems • Robotic Systems • Industrial Actuator Control VPWR • Marine Applications 33742 • Automotive Electronic Control Units including a High Speed CAN 5.0 V Overview VSUP RST V2CTRL V2 MCU The MC33742 and the 33742S are SPI-controlled System Basis Chips (SBCs) combining many frequently used functions along with a CAN 2.0compliant transceiver, used in many automotive electronic control units (ECUs). The MC33742 SBC has a fully protected fixed 5.0 V low dropout internal regulator with current limiting, over-temperature pre-warning, and reset. A second 5.0 V 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 terminals. 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 input terminals, a programmable window watchdog, interrupt, reset, and a SPI module for communication and control. The High Speed CAN 2.0 A /B transceiver is available for intermodule communication. VDD CS SCLK MOSI MISO SPI CS SCLK MOSI MISO TXD GND RXD VPWR L0 L1 L2 L3 WDOG INT V2 HS CANH CANL Safe Circuitry ECU Local Supply Twisted CAN Bus Pair Performance Typical Values Operating Voltage 5.5 V to 18 V Data Rate 1.0 Mbps Internal 5.0 V Regulator 200 mA External 5.0 V Series Regulator 200 mA Supply Current with CAN Wake-up Enabled Supply Current in Sleep Mode, CAN in Sleep State with CAN Wake-up Enabled Supply Current in Stop Mode, CAN in Sleep State with CAN Wake-up Enabled Ambient Operating Temperature 53 + 12 = 65 µA 80 + 12 = 92 µA -40°C ≤ TA ≤ 125°C Features • High Speed 1.0 Mbps CAN interface with bus diagnostic capability (detection of CANH and CANL short to ground, to VDD, and to VSUP) • Low-drop voltage 5.0 V, 200 mA VDD Regulator with current-limiting, overtemperature pre-warning, and output monitoring with reset Protection • Over-temperature • Over-current • • Short-circuit • • • Normal, standby, stop, and sleep modes with low sleep and stop mode current HS • Software programmable watchdog window, interrupt, and reset Benefits • Standby current consumption reduced • Flexible wake-up conditions and watchdog function • Innovative CAN high speed diagnostic with failure mode sent to the MCU through SPI interface • Simple system design with direct interfacing to a microprocessor • Reduced PC board space resulting in enhanced application reliability • Economical solution with an optimized performance/cost ratio • Simplified MCU power supply design with internal safety features and output voltage supervisory circuits Freescale offers a complete line of compatible system basis chips with transceivers Shut Down Under-voltage V2 • Four external wake-up inputs Limiting Auto Retry Status Reporting VDD • Additional 5.0 V regulator with external series pass transistor • 150 mA high side switch output for control of external circuitry Detect Under-voltage Over-temperature • • • • • • • • • • Over-current CAN Bus Fail Detection CANH/L Short-to-Battery • • • • CANH/L Short-toGround • • • • CANH/L Short-to-VDD • • • • Battery Line Under-voltage • • Battery Disconnect • • Simplified Internal Block Diagram V2CTRL VSUP V2 VSUP Monitor Dual Voltage Regulator V1 Monitor HS Control 5.0 V/200 mA V1 Mode Control Oscillator HS Interrupt Watchdog Reset L1 L2 L3 Programmable Wake-up Input SPI L4 CANH CANL High Speed 1.0 Mbps CAN Physical Layer INT WDOG RST MOSI SCLK MISO CS TXD RXD GND • Questions • Q: Are you looking for a complete, easy-to-design power supply solution for your embedded system? • Q: Do you need an advanced microcontroller power supply with power sequencing and supervisory functions? • Q: What voltage (5.0 V or 3.3 V) does your microcontroller need? Ordering Information Part Number Temperature Range Package MC33742PEG/R2 -40°C to 125°C 28 SOICW (Pb-Free) MC33742SPEG/R2 -40°C to 125°C 28 SOICW (Pb-Free) MC33742PEP/R2 -40°C to 125°C 48 QFN (Pb-Free) Development Tools Part Number Description • Q: What type of CAN (high/low speed) do you need? KIT33742DWEVB Evaluation Kit • Q: Do you need several power supplies? Document Number Title Description • Q: Do you need a fully protected low drop series pass regulator? MC33742 Data Sheet Presents the specifications for the product • Q: Would you like to monitor BUS failure during a high speed CAN communication? SG1002 Selector Guide Analog and power management device comparison SG187 Selector Guide Automotive device comparison • Q: Do you want to reduce your application current consumption in standby mode? Documentation • Q: How many wake-up inputs do you need? • Q: Do you need a watchdog with independent reset/interrupt capability? 28 SOICW 1.27 mm Pitch 18.0 mm x 7.5 mm Body Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2009. All rights reserved. Document Number: MC33742FS, Rev 6.0, 7/2011 (Bottom View) 48 QFN 0.5 mm Pitch 7.0 mm x 7.0 mm Body