IS31SE5120A Datasheet | Lumissil

DESCRIPTION IS31SE5120A is an ultra-low-power, 24-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 feature for the environment is to prevent false triggers. A host MCU is required to municate with IS31SE5120A. 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. The trigger event can be configured by setting the interrupt register. IS31SE5120A can support proximity sensing. IS31SE5120A is available in the QFN-32 package. It operates from 2.3V 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 - 24-channel capacitive touch controller with readable key value - Touch-related threshold settings 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-32 - ROHS & Halogen-Free pliant package - TSCA pliance TYPICAL APPLICATION CIRCUIT (QFN-32) 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 capacitors connected to VDD and VDDC should be as close to the IC as possible to reduce EMI. Note 4: The capacitor 1uf connected to VDDC might need to be removed for quick VDD rising time application. Lumissil Microsystems - .lumissil. Rev:A 07/26/2023 CONFID...