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具有 SPI 接口的 24 输入多开关检测接口器件 TIC12400QDCPRQ1 有现货 可添加我们联系方式获取最优惠价格
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描述
The TIC12400-Q1 is an advanced Multiple Switch Detection Interface (MSDI) designed to detect external switch status in a 12-V automotive system. The TIC12400-Q1 features an integrated 10-bit ADC to monitor multi-position analog switches and a comparator to monitor digital switches independently of the MCU. Detection thresholds can be programmed for the ADC and the comparator to support various switch topologies and system non-idealities. 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 TIC12400-Q1 also offers integrated fault detection, ESD protection, and diagnostic functions for improved system robustness. The TIC12400-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.
特性
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 10-bit ADC for Multi-Position Analog Switch Monitoring
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
Integrated Battery and Temperature Sensing
±8 kV Contact Discharge ESD Protection on Input Pins per ISO-10605 With Appropriate External Components
38-Pin TSSOP Package
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