ISSI Lumissil IS32SE5120-Cap touch sensor

IS31SE5120 is an ultra-low power, 24-channel capacitive touch controller. The controller allows sleep mode (under 20uA) and uses auto detection for wake up. It also provides a shield output to increase moisture immunity. Built-in hardware monitors and calibrates the environment to prevent false triggers. A host MCU is required to communicate with IS31SE5120. An on-chip I²C slave controller with 400kHz capability and programmable slave addresses serves as the communication port for the host MCU. An interrupt can be when a trigger event occurs. Trigger/clear condition can be configured by setting the interrupt register.

Key features

• 24-ch. capacitive touch controller
• proximity sensing
• Flexible GPIO setting
• Multi-key function

Additional features

• 24-channel capacitive touch controller with readable key value
• Flexible GPIO setting
• Touch threshold setting for individual key
• Optional multiple-key function
• Press and hold 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
• 400kHz fast-mode I²C interface
• Operating temperature between -40°C ~ +125°C
• Wettable flank QFN-32 package
• AEC-Q100 qualification in progress

Applications

• Automotive control keys - infotainment panel - aircon keys
• Touch key with high robustness and reliability requirements
• Appliances such as whitegoods
• Consumer gaming applications