Analog Mixed Signal and Power Management MC33989 System Basis Chip with High Speed CAN Transceiver Applications MC33989 Simplified Application Diagram • Aircraft Systems • Automotive Systems • Robotic Systems • Farm Equipment • Industrial Actuator Control The 33989 is a monolithic integrated circuit combining many functions used by microcontrollers (MCU) found in automotive Engine Control Units (ECUs). The device incorporates functions such as: two voltage regulators, four high voltage (wakeup) inputs, a 1.0 Mbaud capable CAN physical interface, an SPI interface to the MCU and VSUP monitoring and fault detection circuitry. The 33989 also provides Reset control in conjunction with VSUP monitoring and the watchdog timer features. Also, an Interrupt can be generated, for the MCU, based on CAN bus activity as well as mode changes. V2 VSUP 5.0 V VDD GND • Marine Applications Overview VPWR 33989 RST MCU CS SCLK MOSI MISO INT SPI CS SCLK MOSI MISO V2CTRL V2 HS1 L0 L1 L2 L3 WD TX RX Performance Operating Voltage Data Rate Internal 5.0 V Regulator External 5.0 V Series Regulator Sleep & Stop Current Operating Temperature Local Module Supply Wake-up Inputs Safe Circuits CANH Twisted CANL Pair Typical Values 5.5 - 27 V 1.0 MB/s 200 mA User Defined 60/120 μA -40 °C ≤ TA ≤ 125 °C CAN Bus Features • VDD1: Low Drop voltage regulator, current limitation, over-temperature detection, monitoring, and reset function • VDD1: Total current capability 200 mA • V2: Tracking Function of VDD1 regulator. control circuitry for external bipolar ballast transistor for high flexibility in choice of peripheral voltage and current supply • Low stand-by current consumption in Stop and Sleep modes • High speed 1.0 MBaud CAN physical interface • Four external high voltage wake-up inputs associated with HS1 VBAT switch • 150 mA output current capability for HS1 VBAT switch allowing drive of external switches pull-up resistors or relays • VSUP failure detection • 40 V maximum transient voltage • Additional devices available for comparison in Analog Product Selector Guide, SG1002 and Automotive Product Selector Guide, SG187 CUSTOMER BENEFITS • Provides complete MCU power management solution with few components • CAN and SPI interface • Internal wake-up and watchdog function • Freescale offers a complete line of compatible system basis chips with transceivers • 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 33989 INTERNAL BLOCK DIAGRAM V2CTRL VSUP Monitor Dual Voltage Regulator VDD1 Monitor VSUP V2 VDD1 Oscillator HS1 Control INT HS1 Interrupt Watchdog Reset L0 L1 Programmable Wake-up Inputs RST Mode Control L2 CS L3 SPI Intrace TX RX CANH SCLK MOSI High Speed 1.0 MB/s CAN Physical Interface MISO V2 GND CANL PROTECTION WD DETECT LIMITING SHUT DOWN STATUS REPORTING V1: Under-voltage z Over-temperature z Over-current z z Short-circuit z z z z z V2: Under-voltage z z HS1: Over-temperature z Over-current z z z CAN Bus Failure: H&L Over-current z H&L Over-temperature z z z z z Supply Line: Under-voltage z z Disconnect z z Analog Mixed signal and Power Management Questions • What voltage (5.0 or 3.3 V) does your microcontroller need? • What type of CAN (high/low speed) do you need? • Do you need several power supplies? • Do you need a fully protected low drop series pass regulator? • How many wake-up inputs do you need? • Do you need a watchdog with independent reset/interrupt capability? • Are you looking for a complete, easy-to-design power supply solution for your embedded system? • Do you need an advanced microcontroller power supply with power sequencing and supervisory functions?? 28 SOICW Ordering Information Device MC33989PEG/R2 Temperature Range Package -40 to 125°C 28 SOICW Evaluation Board KIT33989XXXXX Evaluation Board 1.27 mm Pitch 7.5 x 18 mm Body Documentation MC33989 Data sheet order number SG1002 Analog Product Selector Guide SG 187 Automotive Product Selector Guide Learn More: For current information about Freescale products, please visit www.freescale.com. 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., 2011. All rights reserved. Document Number: MC33989FS REV 6.0