ZHCSGP5C August   2017  – February 2022 TIC12400-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  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 and 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 or 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
    7. 8.7 Programming Guidelines
  9. 9 Application Information Disclaimer
    1. 9.1 Application Information
    2. 9.2 Using TIC12400-Q1 in a 12 V Automotive System
    3. 9.3 Resistor-coded Switches Detection in Automotive Body Control Module
      1. 9.3.1 Design Requirements
      2. 9.3.2 Detailed Design Procedure
      3. 9.3.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 接收文档更新通知
    2. 12.2 支持资源
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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8.3.8 Switch Inputs Settings

IN0 to IN23 are inputs connected to external mechanical switches. The switch status of each input, whether open or closed, is indicated by the status registers. Table 8-1 below describes various settings that can be configured for each input. Note: some settings are shared between multiple inputs. It is required to first stop device operation by setting the TRIGGER bit low in the register CONFIG before making any configuration changes, as described in Device Trigger.

Table 8-1 TIC12400-Q1 Wetting Current and Threshold Setting Details
InputThresholdWetting CurrentCurrent Source (CSO) / Current Sink (CSI)Supported Switch Type
Comparator Input ModeADC Input Mode
IN0THRES_COMP_IN0_IN3THRES0 to THRES7THRES_COMWC_IN0_IN1CSO
CSI		Switch to GND
Switch to VBAT
IN1THRES0 to THRES7CSO
CSI		Switch to GND
Switch to VBAT
IN2THRES0 to THRES7WC_IN2_IN3CSO
CSI		Switch to GND
Switch to VBAT
IN3THRES0 to THRES7CSO
CSI		Switch to GND
Switch to VBAT
IN4THRES_COMP_IN4_IN7THRES0 to THRES7WC_IN4CSO
CSI		Switch to GND
Switch to VBAT
IN5THRES0 to THRES7WC_IN5CSO
CSI		Switch to GND
Switch to VBAT
IN6THRES0 to THRES7WC_IN6_IN7CSO
CSI		Switch to GND
Switch to VBAT
IN7THRES0 to THRES7CSO
CSI		Switch to GND
Switch to VBAT
IN8THRES_COMP_IN8_IN11THRES0 to THRES7WC_IN8_IN9CSO
CSI		Switch to GND
Switch to VBAT
IN9THRES0 to THRES7CSO
CSI		Switch to GND
Switch to VBAT
IN10THRES0 to THRES7WC_IN10CSOSwitch to GND
IN11THRES0 to THRES7WC_IN11CSOSwitch to GND
IN12THRES_COMP_IN12_IN15THRES2A
THRES2B		WC_IN12_13CSOSwitch to GND
IN13THRES2A
THRES2B		CSOSwitch to GND
IN14THRES2A
THRES2B		WC_IN14_15CSOSwitch to GND
IN15THRES2A
THRES2B		CSOSwitch to GND
IN16THRES_COMP_IN16_IN19THRES2A
THRES2B		WC_IN16_17CSOSwitch to GND
IN17THRES2A
THRES2B		CSOSwitch to GND
IN18THRES3A
THRES3B
THRES3C		WC_IN18_19CSOSwitch to GND
IN19THRES3A
THRES3B
THRES3C		CSOSwitch to GND
IN20THRES_COMP_IN20_IN23THRES3A
THRES3B
THRES3C		WC_IN20_21CSOSwitch to GND
IN21THRES3A
THRES3B
THRES3C		CSOSwitch to GND
IN22THRES3A
THRES3B
THRES3C		WC_IN22CSOSwitch to GND
IN23THRES3A
THRES3B
THRES3C
THRES8
THRES9		WC_IN23CSOSwitch to GND