1.8 V CapSense® Controller with SmartSense™ Auto-tuning 31 Buttons, 6 Sliders, Proximity Sensors

Features

■QuietZone™ Controller

❐Patented Capacitive Sigma Delta PLUS (CSD PLUS™) sensing algorithm for robust performance

❐High Sensitivity (0.1 pF) and best-in-class SNR performance to support:

• Overlay thickness of 15 mm for glass and 5 mm plastic

• Proximity Solutions

❐Superior noise immunity performance against conducted and radiated noise and ultra low radiated emissions

• Standardized user modules for overcoming noise

■Low power CapSense® block with SmartSense Auto-tuning

❐Low average power consumption –

• 28 µA/sensor in run time (wake-up and scan once every 125 ms)

❐SmartSense_EMC_PLUS Auto-Tuning

• Sets and maintains optimal sensor performance during run time

• Eliminates system tuningduring development and production

• Compensates for variations in manufacturing process

■Driven shield available on five GPIO pins

❐Delivers best-in class water tolerant designs

❐Robust proximity sensing in the presence of metal objects

❐Supports longer trace lengths

❐Max load of 100 pF (3 MHz)

■Powerful Harvard-architecture processor

❐M8C CPU with a max speed of 24 MHz

■Operating Range: 1.71 V to 5.5 V

❐Standby Mode 1.1 μA (Typ)

❐Deep Sleep 0.1 μA (Typ)

■Operating Temperature range: –40^oC to +85^oC

■Flexible on-chip memory

❐8 KB flash, 1 KB SRAM

❐16 KB flash, 2 KB SRAM

❐32 KB flash, 2 KB SRAM

❐50,000 flash erase/write cycles

❐Read while Write with EEPROM emulation

❐In-system programming simplifies manufacturing process

■4 Clock Sources

❐Internal main oscillator (IMO): 6/12/24 MHz

❐Internal low-speed oscillator (ILO) at 32 kHz for watchdog and sleep timers

❐External 32 KHz Crystal Oscillator

❐External Clock Input

■Programmable pin configurations

❐Up to 34 general-purpose I/Os (GPIOs)

❐Dual mode GPIO (Analog and Digital)

❐High sink current of 25 mA per GPIO

• Max sink current 120 mA for all I/Os combined

❐Source Current

• 5 mA on ports 0 and 1

• 1 mA on ports 2,3 and 4

❐Configurable internal pull-up, high-Z and open drain modes

❐Selectable, regulated digital I/O on port 1

❐Configurable input threshold on port 1

■Versatile Analog functions

❐Internal analog bus supports connection of multiple sensors to form ganged proximity sensor

❐Internal Low-Dropout voltage regulator for high power supply rejection ratio (PSRR)

■Additional system resources

❐I2C Slave:

• Selectable to 50 kHz, 100 kHz, or 400 kHz

• Selectable Clock stretch or Forced Nack Mode

• I2C wake from sleep with Hardware address match

❐12 MHz (Configurable) SPI master and slave

❐Three 16-bit timers

❐Watchdog and sleep timers

❐Integrated supervisory circuit

❐10-bit incremental analog-to-digital converter (ADC) with internal voltage reference

❐Two general-purpose high speed, low power analog comparators

■Complete development tools

❐Free development tool (PSoC Designer™)

■Sensor and Package options

❐10 Sensing Inputs – 16-pin QFN, 16-pin SOIC

❐16 Sensing Inputs – 24-pin QFN

❐24 Sensing Inputs – 30-pin WLCSP[1]

❐25 Sensing Inputs – 32-pin QFN

❐31 Sensing Inputs – 48-pin QFN