IS31SE5117A Datasheet | Lumissil

DESCRIPTION IS31SE5117A is an ultra-low-power, 16-channel capacitive touch controller. The controller allows sleep mode (under 10u A) and uses auto-detection for wakeup. It also provides a shield output to increase moisture immunity. The built-in hardware monitor and calibration for the environment is to prevent false triggers. A host MCU is required to municate with IS31SE5117A. An on-chip I²C slave controller with 400k Hz capability serves as the munication port for the host MCU. An interrupt, INT, can be configured and it is generated when a touch trigger event occurs. Trigger conditions can be configured by setting the interrupt register. IS31SE5117A can support proximity sensing. IS31SE5117A is available in the QFN-24 package. It operates from 2.7V to 5.5V over the temperature range from -40°C to +105°C. APPLICATIONS - Touch keys for home appliances - Touch keys for industrial control FEATURES - 16-channel capacitive touch controller with readable key value - Touch threshold setting for individual key - Optional multiple-key function - GPIO toggle/invert function - Automatic calibration - Individual key calibration - Interrupt output with auto-clear and repeating - Auto sleep mode for extremely low power - Keys wake up from sleep mode - Shield output shared with touch key channels - Buzzer/Melody Generator shared with touch key channels - 400k Hz fast-mode I²C interface - Operating temperature between -40°C ~ +105°C - QFN-24 - ROHS & Halogen-Free pliant package - TSCA pliance TYPICAL APPLICATION CIRCUIT (QFN-24) Note 1: The IC should be placed far away from the noise source to prevent EMS. Note 2: The RS and CS should be placed as close to the IC as possible to reduce EMI. Note 3: The AD pin can be configured as KEY15. Note 4: The capacitors connected to VDD and VDDC should be as close to the IC as possible to reduce EMI. Note 5: The capacitor 1uf connected to VDDC might need to be removed for quick VDD rising time application. Lumissil Microsystems -...