Data Sheet (KITMPR121EVM)Table of ContentsProximity Capacitive Touch Sensor Controller11 Pin Descriptions22 Schematic Drawings and Implementation33 Device Operation Overview44 Electrical Characteristics84.1 Absolute Maximum Ratings84.2 ESD and Latch-up Protection Characteristics84.3 DC Characteristics94.4 AC Characteristics94.5 I2C AC Characteristics105 Register Operation Descriptions115.1 Register Read/Write Operations and Measurement Run/Stop Mode115.2 Touch Status Registers (0x00~0x01)115.3 Electrode Filtered Data Register (0x04~0x1D)125.4 Baseline Value Register (0x1E~0x2A)125.5 Baseline Filtering Control Register (0x2B~0x40)125.6 Touch / Release Threshold (0x41~0x5A)135.7 Debounce Register (0x5B)135.8 Filter and Global CDC CDT Configuration (0x5C, 0x5D)145.9 Electrode Charge Current Register (0x5F~0x6B)155.10 Electrode Charge Time Register (0x6C~0x72)155.11 Electrode Configuration Register (ECR, 0x5E)165.12 Out-Of-Range Status Registers (0x02, 0x03)195.13 Soft Rest Register (0x80)195.14 GPIO Registers (0x73~0x7A)196 MPR121 Serial Communication216.1 I2C Serial Communications216.2 Slave Address216.3 Operation with Multiple Master216.4 Read and Write Operation Format22Disclaimer27Size: 283 KBPages: 27Language: EnglishOpen manual
