TIC12400/TIC12400-Q1 MSDI

Texas Instruments TIC12400/TIC12400-Q1 Multiple Switch Detection Interface (MSDI) is designed to detect external switch statuses. The TIC12400 / TIC12400-Q1 supports 24 direct inputs, with 10 inputs configurable to monitor digital I/O switches. 6 wetting current settings can be programmed for each input to support different application scenarios. The TIC12400 / 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. The device supports wake-up operation on all switch inputs to eliminate the need to keep the MCU active continuously, thus reducing the power consumption of the system. The TIC12400 / TIC12400-Q1 supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current is supplied continuously. In polling mode, the wetting current is turned on periodically to sample the input status based on a programmable timer, thus the system power consumption is significantly reduced. The TIC12400 / TIC12400-Q1 also offers various fault detection and diagnostic features for improved system robustness. The TIC12400-Q1 devices are AEC-Q100 qualified for automotive applications.