SCPS268 September 2017 TIC10024-Q1

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Timing Requirements
    7. 6.7Typical Characteristics
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1 VS Pin
      2. 8.3.2 VDD Pin
      3. 8.3.3 Device Initialization
      4. 8.3.4 Device Trigger
      5. 8.3.5  Device Reset
        1. 8.3.5.1VS Supply POR
        2. 8.3.5.2Hardware Reset
        3. 8.3.5.3Software Reset
      6. 8.3.6 VS Under-Voltage (UV) Condition
      7. 8.3.7 VS Over-Voltage (OV) Condition
      8. 8.3.8 Switch Inputs Settings
        1. 8.3.8.1Input Current Source/Sink Selection
        2. 8.3.8.2Input Enable Selection
        3. 8.3.8.3Thresholds Adjustment
        4. 8.3.8.4Wetting Current Configuration
      9. 8.3.9 Interrupt Generation and INT Assertion
        1. 8.3.9.1INT Pin Assertion Scheme
        2. 8.3.9.2Interrupt Idle Time (tINT_IDLE) Time
        3. 8.3.9.3Microcontroller Wake-Up
        4. 8.3.9.4Interrupt Enable / Disable And Interrupt Generation Conditions
        5. 8.3.9.5Detection Filter
      10. 8.3.10Temperature Monitor
        1. 8.3.10.1Temperature Warning (TW)
        2. 8.3.10.2Temperature Shutdown (TSD)
      11. 8.3.11Parity Check And Parity Generation
      12. 8.3.12Cyclic Redundancy Check (CRC)
    4. 8.4Device Functional Modes
      1. 8.4.1Continuous Mode
      2. 8.4.2Polling Mode
      3. 8.4.3Additional Features
        1. 8.4.3.1Clean Current Polling (CCP)
        2. 8.4.3.2Wetting Current Auto-Scaling
  9. Programming
    1. 9.1SPI Communication Interface Buses
      1. 9.1.1Chip Select (CS)
      2. 9.1.2System Clock (SCLK)
      3. 9.1.3Slave In (SI)
      4. 9.1.4Slave Out (SO)
    2. 9.2SPI Sequence
      1. 9.2.1Read Operation
      2. 9.2.2Write Operation
      3. 9.2.3Status Flag
    3. 9.3Programming Guidelines
    4. 9.4Register_Maps
      1. 9.4.1 DEVICE_ID register (Offset = 1h) [reset = 20h]
      2. 9.4.2 INT_STAT Register (Offset = 2h) [reset = 1h]
      3. 9.4.3 CRC Register (Offset = 3h) [reset = FFFFh]
      4. 9.4.4 IN_STAT_MISC Register (Offset = 4h) [reset = 0h]
      5. 9.4.5 IN_STAT_COMP Register (Offset = 5h) [reset = 0h]
      6. 9.4.6 CONFIG Register (Offset = 1Ah) [reset = 0h]
      7. 9.4.7 IN_EN Register (Offset = 1Bh) [reset = 0h]
      8. 9.4.8 CS_SELECT Register (Offset = 1Ch) [reset = 0h]
      9. 9.4.9 WC_CFG0 Register (Offset = 1Dh) [reset = 0h]
      10. 9.4.10WC_CFG1 Register (Offset = 1Eh) [reset = 0h]
      11. 9.4.11CCP_CFG0 Register (Offset = 1Fh) [reset = 0h]
      12. 9.4.12CCP_CFG1 Register (Offset = 20h) [reset = 0h]
      13. 9.4.13THRES_COMP Register (Offset = 21h) [reset = 0h]
      14. 9.4.14INT_EN_COMP1 Register (Offset = 22h) [reset = 0h]
      15. 9.4.15INT_EN_COMP2 Register (Offset = 23h) [reset = 0h]
      16. 9.4.16INT_EN_CFG0 Register (Offset = 24h) [reset = 0h]
  10. 10Application and Implementation
    1. 10.1Application Information
    2. 10.2Digital Switch Detection in Automotive Body Control Module
      1. 10.2.1Design Requirements
      2. 10.2.2Detailed Design Procedure
      3. 10.2.3Application Curves
    3. 10.3Systems Examples
      1. 10.3.1Using TIC10024-Q1 in a 12 V Automotive System
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1Layout Guidelines
    2. 12.2Layout Example
  13. 13Device and Documentation Support
    1. 13.1Receiving Notification of Documentation Updates
    2. 13.2Community Resources
    3. 13.3Trademarks
    4. 13.4Electrostatic Discharge Caution
    5. 13.5Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Designed to Support 12-V Automotive Systems with Over-voltage and Under-voltage Warning
  • Monitors up to 24 Direct Switch Inputs with 10 Inputs Configurable to Monitor Switches Connected to Either Ground or Battery
  • Switch Input Withstands up to 40 V (Load Dump Condition) and down to –24 V (Reverse Polarity Condition)
  • 6 Configurable Wetting Current Settings:
    (0 mA, 1 mA, 2 mA, 5 mA, 10 mA, and 15 mA)
  • Integrated Comparator with 4 Programmable Thresholds for Digital Switch Monitoring
  • Ultra-low Operating Current in Polling Mode:
    68 μA Typical (tPOLL = 64 ms, tPOLL_ACT = 128 μs,
    All 24 Inputs Active, Comparator Mode, All Switches Open)
  • Interfaces Directly to MCU Using 3.3 V / 5 V Serial Peripheral Interface (SPI) Protocol
  • Interrupt Generation to Support Wake-Up Operation on All Inputs
  • ±8 kV Contact Discharge ESD Protection on Input Pins per ISO-10605 With Appropriate External Components
  • 38-Pin TSSOP Package

Applications

  • Body Control Module and Gateway
  • Automotive Lighting
  • Heating and Cooling
  • Power Seats
  • Mirrors

Description

The TIC10024-Q1 is an advanced Multiple Switch Detection Interface (MSDI) device designed to detect external switch status in a 12-V automotive system. The TIC10024-Q1 features a comparator with adjustable thresholds to monitor digital switches independently of the MCU. The device monitors 24 direct switch inputs, with 10 inputs configurable to monitor switches connected to either ground or battery. 6 unique wetting current settings can be programmed for each input to support different application scenarios. The device supports wake-up operation on all switch inputs to eliminate the need to keep the MCU active continuously, thus reducing power consumption of the system. The TIC10024-Q1 also offers integrated fault detection and ESD protection for improved system robustness. The TIC10024-Q1 supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current is supplied continuously. In polling mode, wetting current is turned on periodically to sample the input status based on a programmable timer, thus the system power consumption is significantly reduced.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TIC10024-Q1TSSOP (38)9.70 mm x 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TIC10024-Q1 schem-01-scps260.gif