Datasheet SPSB081 (STMicroelectronics) - 2

SPSB081
• Tailgate modules • Door modules • Light control modules • Gear shifters • Steering column • Fuel pump
Description
The SPSB081 is a power management system IC providing electronic control modules with enhanced power management functionality, including various standby modes to minimize the power consumption with programmable local and remote wake-up capability, as well as LIN (only for SPSB0815 and SPSB0813) and CAN FD physical communication layers. The device has one low-drop voltage regulator to supply the system microcontroller and one voltage tracker to supply external peripheral loads such as sensors. V1 is available with a fixed rail (5 V or 3.3 V) and V1 overvoltage detection and protection solution, while V2 is a tracker voltage regulator of V1, programmable by SPI with 5 V or 3.3 V. Moreover, the device features four high-side drivers to supply LEDs and sensors. All outputs are short- circuit (SC) protected and implement open-load diagnosis. The ST standard SPI interface allows control and diagnosis of the device and enables generic software development.
DS14048
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Rev 3 page 2/137
Document Outline Device summary Features Applications Description 1 Block diagram and pin description 1.1 Block diagram 1.2 Pin description 2 Maximum ratings 2.1 Operating range 2.1.1 Supply voltage ranges 2.2 Absolute maximum ratings 2.3 Temperature ranges and thermal data 3 Functional description 3.1 Supply VS and VSREG 3.2 Voltage regulators 3.2.1 Voltage regulator: V1 3.2.2 Voltage regulator: V2 3.2.3 Voltage regulator failure 3.2.4 Short to ground detection 3.2.5 Voltage regulator behavior 3.3 Operating modes 3.3.1 Active mode 3.3.2 SW-debug mode 3.3.3 V1_standby mode 3.3.4 Interrupt 3.3.5 VBAT_standby mode 3.4 Wake-up from standby modes 3.4.1 Wake-up inputs 3.5 Functional overview (truth table) 3.6 Configurable window watchdog 3.6.1 Change watchdog timing 3.7 Fail safe mode 3.7.1 Temporary failures 3.7.2 Non recoverable failures - Forced in VBAT_standby mode 3.8 Reset output (NRESET) 3.9 DIAGN output 3.10 V1 overvoltage detection 3.11 LIN bus interfaces (only for SPSB0815 and SPSB0813) 3.11.1 Features 3.11.2 Error handling 3.11.2.1 Dominant TXD_L time out 3.11.2.2 Permanent recessive 3.11.2.3 Permanent dominant 3.11.3 Wake-up from standby modes 3.11.3.1 Pattern wake-up (default) 3.11.3.2 Status change wake-up - Recessive-to-dominant 3.11.3.3 Status change wake-up - Dominant-to-recessive 3.12 CAN FD bus transceiver 3.12.1 Features 3.12.2 CAN transceiver supply 3.12.3 CAN transceiver operating modes 3.12.4 CAN error handling 3.12.4.1 Dominant TXDC time out 3.12.4.2 CAN bus permanent recessive 3.12.4.3 CAN Permanent dominant 3.12.4.4 RXDC permanent recessive 3.12.5 Wake-up by CAN 3.12.6 CAN receive only mode 3.12.7 CAN looping mode 3.13 Power supply fail 3.13.1 VS supply failure 3.13.2 VSREG supply failure 3.14 Thermal state machine 3.15 Power outputs OUT1..4 3.16 Open-load detection 3.17 Overcurrent detection 3.18 Current monitor 3.19 Constant current mode 3.20 Temperature warning and shutdown 3.21 Thermal clusters 3.22 Functional safety management 4 Serial peripheral interface (SPI) 4.1 ST-SPI 4.1.1 Physical layer 4.2 Signal description 4.2.1 Clock and data characteristics 4.2.2 Communication protocol 4.2.2.1 SDI frame 4.2.2.2 Operating code 4.2.2.3 Advanced operation codes 4.2.2.4 Data-in payload 4.2.2.5 SDO frame 4.2.2.6 Global status byte (GSB) 4.2.2.7 Data-out payload 4.3 Address definition 4.3.1 Information registers 4.3.1.1 Device identification registers 4.3.1.2 SPI modes 4.3.1.3 SPI burst read 4.3.1.4 SPI data length 4.3.2 Device application registers (RAM) 4.4 Protocol failure detection 4.4.1 Clock monitor 4.4.2 SCK polarity (CPOL) check 4.4.3 SCK phase (CPHA) check 4.4.4 CSN timeout 4.4.5 SDI stuck at GND 4.4.6 SDI stuck at HIGH 4.4.7 SDO stuck at GND and HIGH 5 Electrical characteristics 5.1 Oscillator 5.2 Power-on reset (VSREG) 5.3 Voltage regulator V1 5.4 Voltage regulator V2 5.5 Reset output 5.6 DIAGN output 5.7 Watchdog 5.8 Current monitor output (CM) 5.9 Outputs OUT1..OUT4 5.10 Power outputs switching times 5.11 Output current threshold 5.12 Wake-up inputs (WU1, DIR/WU2) 5.13 CAN FD transceiver 5.14 LIN transceiver (only for SPSB0815 and SPSB0813) 5.15 SPI 5.16 Debug input 5.17 Interrupt output 5.18 Timer1 and Timer2 5.19 SGND loss comparator 6 Application 7 SPI registers 7.1 Global status byte (GSB) 7.2 Control registers overview 7.3 Status register overview 7.4 Control registers 7.5 Status registers 8 Package information 8.1 QFN32L Epad (5.0x5.0x1.0 mm) package information Revision history