ZHCSGR5 September   2017 TIC12400

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7  Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature 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. 8.3.5.1 VS Supply POR
        2. 8.3.5.2 Hardware Reset
        3. 8.3.5.3 Software 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. 8.3.8.1 Input Current Source/Sink Selection
        2. 8.3.8.2 Input Mode Selection
        3. 8.3.8.3 Input Enable Selection
        4. 8.3.8.4 Thresholds Adjustment
        5. 8.3.8.5 Wetting Current Configuration
      9. 8.3.9  Interrupt Generation and INT Assertion
        1. 8.3.9.1 INT Pin Assertion Scheme
        2. 8.3.9.2 Interrupt Idle Time (tINT_IDLE) Time
        3. 8.3.9.3 Microcontroller Wake-Up
        4. 8.3.9.4 Interrupt Enable/disable And Interrupt generation Conditions
        5. 8.3.9.5 Detection Filter
      10. 8.3.10 Temperature Monitor
        1. 8.3.10.1 Temperature Warning (TW)
        2. 8.3.10.2 Temperature Shutdown (TSD)
      11. 8.3.11 Parity Check And Parity Generation
      12. 8.3.12 Cyclic Redundancy Check (CRC)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Continuous Mode
      2. 8.4.2 Polling Mode
        1. 8.4.2.1 Standard Polling
        2. 8.4.2.2 Matrix Polling
      3. 8.4.3 Additional Features
        1. 8.4.3.1 Clean Current Polling (CCP)
        2. 8.4.3.2 Wetting Current Auto-Scaling
        3. 8.4.3.3 VS Measurement
        4. 8.4.3.4 Wetting Current Diagnostic
        5. 8.4.3.5 ADC Self-Diagnostic
    5. 8.5 Programming
      1. 8.5.1 SPI Communication Interface Buses
        1. 8.5.1.1 Chip Select (CS)
        2. 8.5.1.2 System Clock (SCLK)
        3. 8.5.1.3 Slave In (SI)
        4. 8.5.1.4 Slave Out (SO)
      2. 8.5.2 SPI Sequence
        1. 8.5.2.1 Read Operation
        2. 8.5.2.2 Write Operation
        3. 8.5.2.3 Status Flag
    6. 8.6 Register Maps
      1. 8.6.1  DEVICE_ID register (Offset = 1h) [reset = 20h]
      2. 8.6.2  INT_STAT Register (Offset = 2h) [reset = 1h]
      3. 8.6.3  CRC Register (Offset = 3h) [reset = FFFFh]
      4. 8.6.4  IN_STAT_MISC Register (Offset = 4h) [reset = 0h]
      5. 8.6.5  IN_STAT_COMP Register (Offset = 5h) [reset = 0h]
      6. 8.6.6  IN_STAT_ADC0 Register (Offset = 6h) [reset = 0h]
      7. 8.6.7  IN_STAT_ADC1 Register (Offset = 7h) [reset = 0h]
      8. 8.6.8  IN_STAT_MATRIX0 Register (Offset = 8h) [reset = 0h]
      9. 8.6.9  IN_STAT_MATRIX1 Register (Offset = 9h) [reset = 0h]
      10. 8.6.10 ANA_STAT0 Register (Offset = Ah) [reset = 0h]
      11. 8.6.11 ANA_STAT1 Register (Offset = Bh) [reset = 0h]
      12. 8.6.12 ANA_STAT2 Register (Offset = Ch) [reset = 0h]
      13. 8.6.13 ANA_STAT3 Register (Offset = Dh) [reset = 0h]
      14. 8.6.14 ANA_STAT4 Register (Offset = Eh) [reset = 0h]
      15. 8.6.15 ANA_STAT5 Register (Offset = Fh) [reset = 0h]
      16. 8.6.16 ANA_STAT6 Register (Offset = 10h) [reset = 0h]
      17. 8.6.17 ANA_STAT7 Register (Offset = 11h) [reset = 0h]
      18. 8.6.18 ANA_STAT8 Register (Offset = 12h) [reset = 0h]
      19. 8.6.19 ANA_STAT9 Register (Offset = 13h) [reset = 0h]
      20. 8.6.20 ANA_STAT10 Register (Offset = 14h) [reset = 0h]
      21. 8.6.21 ANA_STAT11 Register (Offset = 15h) [reset = 0h]
      22. 8.6.22 ANA_STAT12 Register (Offset = 16h) [reset = 0h]
      23. 8.6.23 CONFIG Register (Offset = 1Ah) [reset = 0h]
      24. 8.6.24 IN_EN Register (Offset = 1Bh) [reset = 0h]
      25. 8.6.25 CS_SELECT Register (Offset = 1Ch) [reset = 0h]
      26. 8.6.26 WC_CFG0 Register (Offset = 1Dh) [reset = 0h]
      27. 8.6.27 WC_CFG1 Register (Offset = 1Eh) [reset = 0h]
      28. 8.6.28 CCP_CFG0 Register (Offset = 1Fh) [reset = 0h]
      29. 8.6.29 CCP_CFG1 Register (Offset = 20h) [reset = 0h]
      30. 8.6.30 THRES_COMP Register (Offset = 21h) [reset = 0h]
      31. 8.6.31 INT_EN_COMP1 Register (Offset = 22h) [reset = 0h]
      32. 8.6.32 INT_EN_COMP2 Register (Offset = 23h) [reset = 0h]
      33. 8.6.33 INT_EN_CFG0 Register (Offset = 24h) [reset = 0h]
      34. 8.6.34 INT_EN_CFG1 Register (Offset = 25h) [reset = 0h]
      35. 8.6.35 INT_EN_CFG2 Register (Offset = 26h) [reset = 0h]
      36. 8.6.36 INT_EN_CFG3 Register (Offset = 27h) [reset = 0h]
      37. 8.6.37 INT_EN_CFG4 Register (Offset = 28h) [reset = 0h]
      38. 8.6.38 THRES_CFG0 Register (Offset = 29h) [reset = 0h]
      39. 8.6.39 THRES_CFG1 Register (Offset = 2Ah) [reset = 0h]
      40. 8.6.40 THRES_CFG2 Register (Offset = 2Bh) [reset = 0h]
      41. 8.6.41 THRES_CFG3 Register (Offset = 2Ch) [reset = X]
      42. 8.6.42 THRES_CFG4 Register (Offset = 2Dh) [reset = X]
      43. 8.6.43 THRESMAP_CFG0 Register (Offset = 2Eh) [reset = 0h]
      44. 8.6.44 THRESMAP_CFG1 Register (Offset = 2Fh) [reset = 0h]
      45. 8.6.45 THRESMAP_CFG2 Register (Offset = 30h) [reset = 0h]
      46. 8.6.46 Matrix Register (Offset = 31h) [reset = 0h]
      47. 8.6.47 Mode Register (Offset = 32h) [reset = 0h]
    7. 8.7 Programming Guidelines
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Digital IO Switches and Analog Voltage Monitoring
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 接收文档更新通知
    2. 12.2 社区资源
    3. 12.3 商标
    4. 12.4 静电放电警告
    5. 12.5 Glossary
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

10 Power Supply Recommendations

There are two supply input pins for the TIC12400: VS and VDD. VS is the main power supply for the entire chip and is essential for all critical functions of the device. The TIC12400 is designed to operate with VS ranging from 6.5 V to 35 V. The VDD supply is used to determine the logic level on the SPI communication interface, source the current for the SO driver, and sets the pull-up voltage for the CS pin. It can also be used as a possible external pull-up supply for the /INT pinas an alternative to the VS supply and it shall be connected to a 3 V to 5.5 V logic supply. Removing VDD from the device disables SPI communications, but does not impact normal operation of the device.

To improve stability of the supply inputs, some decoupling capacitors are recommended on the PCB. Figure 87 shows an example on the on-board power supply decoupling scheme. The supply voltage (VSUPPLY) is decoupled on the Electronic Control Unit (ECU) board using a large decoupling capacitor (CBUFF). The diode is installed to prevent damage to the internal system under reversed supply condition. CVS shall be installed closed to the TIC12400 for best decoupling performance. The voltage regulator provides a regulated voltage for the digital potion of the device and for the local microcontroller and its output is decoupled with CDECOUPLE. Table 61 lists recommended values for each individual decoupling capacitor shown in the system diagram.

Table 61. Decoupling Capacitor Recommendations

Component Value
CBUFF 100 μF, 50V rated, ±20%
CVSUPPLY 100 nF, 50 V rated, ±10%; X7R
CVS 100 nF, 50 V rated
CDECOUPLE 100 nF ~ 1 μF
TIC12400 Power_Supply.gif Figure 87. Recommended Power Supply Decoupling