mc33789 Freescale Semiconductor, Inc, mc33789 Datasheet
mc33789
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mc33789 Summary of contents
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... Output Driver 1 SPI VCC AOUT ARM FEN_1 RESET FEN_2 RESET Squib Driver SPI SPI ARM_X and ARM_Y for Squib Driver 2 FENs 2 Document Number: MC33789 Rev. 1.0, 2/2011 33789 AUTO RESTRAINT AE SUFFIX (PB-FREE) EXPOSED PAD 98ASA10763D 64-PIN LQFP ORDERING INFORMATION Temperature Package Range ( -40 to 125 ° ...
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INTERNAL BLOCK DIAGRAM SI SO SCK CS CS_A CS_B SPI CS_C Monitor A_SENSOR ARM Safing DISARM Logic ASST SCRAP OUT1_D OUT1_S OUT2_D OUT2_S CLK SATSYNC PSI5_1 PSI5_2 PSI5_3 PSI5_4 GND_PSI IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 Analog ...
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Transparent Top View ASST CS_C CS_B CS_A SCRAP PSI5_1 PSI5_2 PSI5_3 PSI5_4 GND_PSI SO SI SCK CLK CS SATSYNC Table 1. 33789 Pin Definitions A functional description of each pin can be found in the Functional Pin Description section beginning ...
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PIN CONNECTIONS Table 1. 33789 Pin Definitions (continued) A functional description of each pin can be found in the Functional Pin Description section beginning on Pin Pin Pin Name Number Function 15 CS Input 16 SATSYNC Input Satellite Sync-pulse 17 ...
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Table 1. 33789 Pin Definitions (continued) A functional description of each pin can be found in the Functional Pin Description section beginning on Pin Pin Pin Name Number Function 47 BUCKCOM Input Buck Compensation pin2 P2 48 BUCKCOM Input Buck ...
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ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 2. Maximum Ratings All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. Ratings ELECTRICAL RATINGS Supply Input Voltage Wake-up Input Voltage ...
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Table 2. Maximum Ratings (continued) All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or permanent damage to the device. Ratings ESD Voltage (HBM) LIN Pin ESD Capability AECQ100 (3) Human Body ...
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ELECTRICAL CHARACTERISTICS MAXIMUM RATINGS Table 3. Limits / Maximum Test Voltage for LIN Pin Transient Immunity Tests Test Pulse V [ -100 2a +75 3a -150 3b +100 Notes applied on the VPWR pin as ...
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STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic POWER MANAGEMENT Power Supply Input Voltage Normal Operation Wake-up Threshold Voltage Normal V ...
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic POWER MANAGEMENT (CONTINUED) Buck Converter Output Over-voltage Shutdown Threshold Low ...
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Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic RESET AND WATCHDOG Reset Output High I = -2.0 mA RESET Reset Output Low I ...
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic SATELLITE SENSOR INTERFACE (CONTINUED) Satellite Interface Pull-down Current Limit Satellite ...
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Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic DC SENSOR INTERFACE (CONTINUED) INx Load Capacitance DC Sensor Interface Current to Voltage Conversion Factor ...
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic CONFIGURABLE DRIVERS Drain-Source On Voltage in High Side Driver Configuration ...
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Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic GENERAL LOGIC INPUTS: CS, CS_X, SCK, SI, ASST, SCRAP, CLK Logic Input High Logic Input ...
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ELECTRICAL CHARACTERISTICS STATIC ELECTRICAL CHARACTERISTICS Table 4. Static Electrical Characteristics (continued) Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic (14),(12) LIN TRANSCEIVER PHYSICAL LAYER (10) Operating Voltage Range Operating ...
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DYNAMIC ELECTRICAL CHARACTERISTICS Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic POWER MANAGEMENT Boost Switch Transistor Switching Time Sync Switch Transistor Switching Time V ...
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ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic SATELLITE SENSOR INTERFACE PSI5 (CONTINUED) Satellite Quiescent Current Measurement Delay Satellite ...
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Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic DC SENSOR INTERFACE AND ANALOG OUTPUT DC Sensor Measurement Duration Supply Regulator Setting Time V = ...
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ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 5. Dynamic Electrical Characteristics Characteristics noted under conditions 7.0 V ≤ V Typical values noted reflect the approximate parameter means at T Characteristic LIN PHYSICAL LAYER: DRIVER CHARACTERISTICS FOR NORMAL SLEW RATE - 20.0 ...
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Figure 5. Synchronous TDM Mode Sync Pulse Timing Figure 6. Synchronous TDM Mode Satellite Interface Timing Analog Integrated Circuit Device Data Freescale Semiconductor TIMING DIAGRAMS t SAT_SYNC ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS 33789 21 ...
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ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS Voltages SPI CS Satsync Satsync (Internal) PSI5_1 Current PSI5_2 Figure 7. Synchronous Satsync-Steered Mode Satellite Interface Timing 33789 22 Figure 8. SPI Timing Analog Integrated Circuit Device Data Freescale Semiconductor ...
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Figure 9. Test Circuit for Timing Measurements TXD TBIT t BUS_DOM V LIN_REC 74. SUP REC(MAX) 58. SUP DOM(MAX) LIN 42.2% V SUP TH REC(MIN) 28. SUP DOM(MIN) RXD Output of receiving Node 1 ...
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ELECTRICAL CHARACTERISTICS TIMING DIAGRAMS TXD TBIT t BUS_DOM V LIN_REC 77. SUP REC(MAX) 61. SUP DOM(MAX) LIN 38. SUP REC(MIN) 25. SUP DOM(MIN) RXD Output of receiving Node 1 t REC_PDF(1) RXD ...
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The 33789 provides an integrated solution for multiple basic functions in an air bag control module system basis chip, the 33789 supplies different voltages to a complete airbag system with centralized power management. It controls the wake-up and ...
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FUNCTIONAL DESCRIPTION FUNCTIONAL PIN DESCRIPTION BUCK SWITCH OUTPUT (BUCKSW) BUCKSW is a synchronous half-bridge switch output for the buck converter, to create BUCK is below the target threshold, the high side switch is turned on to charge ...
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DC sensors, configurable driver outputs, and all power supplies. CONFIGURABLE DRIVER OUTPUTS (OUTX_D, OUTX_S) The 33789 provides two general purpose low current drivers. Each one can be independently configured as either a high side or a low side ...
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... MC33789 Function Block Diagram Power Management Energy Buck Reserve Converter ...
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SPI WAKE Sleep SPI Mode Interface Control Sleep Reset Analog MUX 1/ K AOUT SPI SPI Interface Control through SPI AOUT Buffer Figure 15. Energy Reserve Control Block Diagram BUCK CONVERTER The buck converter creates a step-down intermediate ≈ ...
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FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION The 33789 provides redundant pins to input V the voltage regulation and further power conversions. SPI SPI Interface Analog MUX AOU T SYNC SUPPLY FOR PSI5 INTERFACE To create a regulated sync pulse supply ...
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SPI SPI Interface AOUT SPI PPT SPI Interface Watchdog Control Internal Resets Reset Logic External RESET Reset Driver Figure 18. Linear Regulators and Watchdog Block Diagram Analog Integrated Circuit Device Data Freescale Semiconductor Charge C ontrol through SPI Pump Control ...
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FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION SATELLITE SENSOR INTERFACE PSI5 The 33789 provides 4 satellite sensor interface channels to collect data from remote satellite sensors. The physical link is a two-wire pair. The satellite sensor interface implements ...
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The DC sensor interface not only monitors the voltages at each input, but also provides a bias supply with four selectable regulated voltages for each sensor output stage. The supply regulator is capable of measuring and limiting the load current. ...
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FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION SERIAL PERIPHERIAL INTERFACE (SPI) The 33789 SPI interface uses a slave configuration. It features: • 16-bit data frame • 8.0 MHz SPI clock RXD TXD Interface LIN GND_LIN SCRAP Figure 22. Communication ...
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Checks the sensor data whether they are in valid ranges and in the correct sequence requested by the MCU 2. Safing State Machine: • Applies overall safing control • Supports 5 exclusive operation modes: •Start-up Mode •Diagnostic Mode •Safing ...
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FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION The driver output pins can withstand shorts to as low as -1 high 1.0 V, and for 5 minutes. PRW They will survive with 40 ...
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FUNCTIONAL DEVICE OPERATION POWER MODE CONTROL The 33789 Power Mode Control controls the start-up activation of both boost and buck power supplies, based on the voltages on the VPWR and WAKE pins. The Wake input is a battery voltage, active-high ...
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FUNCTIONAL DEVICE OPERATION OPERATING MODES V DIAGNOSTIC AND V RESTART BUCK CC Figure 29 indicates “V _OK = 1” necessary BUCK condition for V start specific case, it can dependent. The situation could ...
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The V switch control logic can be described with PRE_LOW Table 7. Table 7. V Switch Control PRE_LOW V > WAKE Sleep Mode Buck_OK V /2 PWR ...
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FUNCTIONAL DEVICE OPERATION OPERATING MODES ndg ap_OK Band gap V _OK _OV CC V _UV CC WDOG Er ror V _OV D D GNDA Lo ss WDOG Test The functions of ...
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Watchdog Error WDOG Error is defined as: NOT [WDOG OVERIDE] AND [WDOG_FEED with same polarity as the previous feed OR WDOG_FEED before the min. window time to the previous feed OR WDOG_FEED after the max. window time to the previous ...
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FUNCTIONAL DEVICE OPERATION OPERATING MODES WDOG Refresh Refresh Acceptance Window Last Missing refresh Refresh Set WDR=1 SPI WDOG_TEST received Figure 37. Successful and Unsuccessful WDOG Test Examples Arming Logic When an internal Arm signal is created, it shall be output ...
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Start bits Data bits Logic ‘0’ ‘0’ ‘1’ I SAT I SAT_TH I SAT_TH_OFS I SAT_Q Bit Time = 1/f SAT Figure 39. Current Modulation and Manchester Bit Encoding of Satellite Sensor The PSI5-P 10P -500/3L mode ...
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FUNCTIONAL DEVICE OPERATION OPERATING MODES t SYNC Figure 42. Synchronous TDM Mode The rising edge of the Satsync signal triggers the generation of the sync pulse, the falling edge of Satsync is ignored. The time ...
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The first measurement takes 35 ms µ ...
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FUNCTIONAL DEVICE OPERATION OPERATING MODES A_SENSOR 1 VERDIAG S Discharge Satsync SATSYNC Filter ASST_DIS ASST Internal Reset VERDIAG Signal Conversion To convert the VERDIAG signal, VERDIAG _EN shall be active in advance. At the next Satsync falling ...
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Satsync SOC EOC Select Sensor_Val ASENSOR_RG Output ER_Val VERDIAG_RG Output VERDIAG_EN ER_Discharge VERDIAG Analog Sensor Self Test On-board analog sensor self-test is often used to verify the functionalities and the connection between the sensor and the MCU. To facilitate the ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI SENSOR MESSAGE, OPERATION COMMAND AND SPI The 33789 communicates with the MCU via the SPI bus. SI and SO are in parallel, to transmit serial data as a bidirectional communication interface ...
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Table 8. SPI Sensor Data, - Message Format Table 9. SPI Sensor Data, - Message Bit Definition SENSOR DATA REQUEST SI BIT DEFINITION Name Bit Position SQ2:SQ0 15, 14, 12 Sequence identifier - used for synchronizing samples SEN 13 Sensor ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI After the data from a given logic channel is read via the SPI interface, subsequent requests for the data from the same logic channel will result in an ERROR response with ...
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Table 12. SPI Non-sensor Data, - Message Format MSB OP1 OP0 SEN ⇓ ⇓ Write Address Read Address ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Table 14. SPI Command, - LINE_MODE Write Read Default → ...
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Table 16. SPI Command, - SYNC_ENABLE Write Read xSE Sync Pulse Enable 0 Channel PSI5_x sync pulse disabled Default → 1 ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Table 17. SPI Command, - LIN_CONFIG REN Default → 0 Normal function (RX outputs LIN signal) 1 Satellite monitor (RX outputs satellite Manchester signal) Power Supply Control SPI Commands PS_CONTROL (0x51, ...
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Table 18. SPI Command, - PS_CONTROL SC Default → 0 Deactivate sync supply 1 Activate sync supply BOE 0 Deactivate boost Default → 1 Activate boost BUE 0 Deactivate buck request Default → 1 Activate buck ERC1 ERC0 0 0 ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Analog Interface SPI Commands AI_CONTROL (0x52, 0x92) The AI_CONTROL command selects an analog voltage source to be routed to the analog diagnostics output AOUT Table 20. SPI Command - AI_CONTROL 15 ...
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DC Sensor Interface SPI Commands DCS_CONTROL (0x53, 0x93) The DCS_CONTROL command is used to control two internal analog multiplexers for the DC sensor input interface activation, which include: •Sensor Channel Selection (SS): Determines which DC sensor input shall be connected ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Safing Logic SPI Commands SAFE_CONTROL (0x58, 0x98) The SAFE_CONTROL command is used for the following safing logic features: •Safing State Machine (SSM) operation mode control •Arming output test mode control, - ...
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SE → Default 0 1 SCRAP_SEED (0x59, 0x99) The SCRAP_SEED command is a read-only command used to request an 8-bit seed value for the safing state machine to enter into Arming mode. Upon reception of this command, the 33789 freezes ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Table 25. SPI Command, - T_UNLOCK Write Read * SO 0 ...
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Table 26. SPI Command, - SAFE_THx Write Read * Comman 0x45,0x85 0 ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Table 27. SPI Command, - WDOG_FEED Write Read * The READ ...
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There are two status bits latched in the 33789 after they are set to their 'active' states. Once the bits are read via a STATUS command, they are set to their 'inactive' states. Only an internal reset and the STATUS ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Default → OUT1_CTL (0x5B, 0x9B) and OUT2_CTL (0x5C, 0x9C) The OUTx_CTL commands are used to activate/ deactivate the general purpose drivers. OUT1_CTL is for driver1 (OUT1_D, OUT1_S), and OUT2_CTL ...
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Table 33. SPI Command, - OUT2_CTL Write Read * DC5:D DC% C0 → Default 0 000000 OFF 22 010110 1 000001 ...
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FUNCTIONAL DEVICE OPERATION SENSOR MESSAGE, OPERATION COMMAND AND SPI Operational Mode SPI Command Table All of the 33789 operational mode SPI commands are summarized in Table 35. Table 35. Operational Mode SPI Command Table ADD Command Function ...
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SPI Request Error A SPI Request Error is defined as a condition, where the content of a SPI request message is incorrect. When a SPI Request Error is detected, the 33789 will respond with an error response message on SO ...
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FUNCTIONAL DEVICE OPERATION SAFING interface not possible to set both of the outputs in their active states (ARM=1 and DISARM=0) in this mode. The SSM remains in this mode until a SAFE_CTL SPI command is received for either ...
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To remain in Arming mode, the MCU must periodically refresh the 33789 with SCRAP_KEY command containing correct key value, and the 33789 must continuously receive a valid ACL signal at the SCRAP pin from either the MCU or another external ...
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FUNCTIONAL DEVICE OPERATION SAFING Sensor Message Detection: - generate SENS_MSG When the SENS_MSG signal is activated, it indicates a valid sensor message is received and the Sequence Counter is not frozen (when frozen, the counter value equal to '1110'). The ...
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SPI SO Sensor Data Response from Satellite Receiver or on-board Sensor MSB SQ2 SQ1 SQ0 P = SEQ_ CTR[2:0] SENS_MSG Sensor Data Validation: - generate DAT_VALID The DAT_VAL signal is activated whenever a SPI sensor data ...
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FUNCTIONAL DEVICE OPERATION SAFING Data Valid Counter The Data Valid Counter increments each time a sensor SPI message is received that contains valid sensor data (ST1:ST0 = '01'). It is incrementally based on the DAT_VALID signal from the SPI Monitor ...
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SPI Read / Write Access to Safing Thresholds The MCU has read and write access to the safing thresholds via the SPI interface, using eight SPI SAFE_THx commands. The application specific safing thresholds are allowed to be written to the ...
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FUNCTIONAL DEVICE OPERATION SAFING Threshold Encoding Example 27 DEC Convert to Hex 1B HEX Convert to Binary 0001 1011 Divide by 2 0000 1101 Apply MS Dwell Extension bit 1000 1101 8D HEX Value stored in Threshold Register Figure 59. ...
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DWELL EXTENSION While in Safing mode, whenever the Arming signals is activated, Dwell Extension is used to extend the assertion time. The Dwell Extension is disabled while in Diagnostic mode, - the Arming outputs could be activated for test. While ...
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PACKAGING PACKAGE DIMENSIONS For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. 33789 76 PACKAGING PACKAGE DIMENSIONS AE SUFFIX 64-PIN 98ASA10763D REVISION A Analog Integrated Circuit Device Data Freescale Semiconductor ...
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Analog Integrated Circuit Device Data Freescale Semiconductor AE SUFFIX 64-PIN 98ASA10763D REVISION A PACKAGING PACKAGE DIMENSIONS 33789 77 ...
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PACKAGING PACKAGE DIMENSIONS 33789 78 AE SUFFIX 64-PIN 98ASA10763D REVISION A Analog Integrated Circuit Device Data Freescale Semiconductor ...
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REVISION DATE DESCRIPTION OF CHANGES 2/2011 • Initial Release 1.0 Analog Integrated Circuit Device Data Freescale Semiconductor REVISION HISTORY REVISION HISTORY 33789 79 ...
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... 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. 2010. All rights reserved. MC33789 Rev. 1.0 2/2011 http:// http:/ ...