AMRG20

 

 

 

                                    An MCU-based 8-channel capacitive touch sensor

 

 

* Properties

   - 8-bit Turbo 80C51 Architecture (4 clock cycles / 1 machine cycle)

   - Max. 10 programmable I/O pins (Bi-direction, Open-drain output, Push-pull output)

   - Power-on- Reset (POR) by Low Voltage Detector (LVD)

   - 2 Selectable internal ring Oscillators (12MHz / 300KHz)

   - Programmable Watchdog Timer

   - 3-channel 16-bit Timer/Counters

   - Simple UART (mode 1 only)

   - 2-channels I2C (I2C Master, I2C Slave)

   - Smart Touch Sense Engine (max. 9-channel)

         * 8-channel dedicated input (included 2nd dummy channel)

   - 11 interrupt sources including 2 external ones

         * Timer 0/1/2, WDT, TOUCH, UART, 2-I2C, I2C, Wakeup

         * Two external interrupt : selectable Edge / Level of source

         * Two level interrupt priority

   - Reset scheme

         * on-chip Power-on-Reset (with LVD)

         * External reset

         * Watchdog timer reset

   - Power consumption

         * Active current : max 3mA @ 3V

         * Idle current : max 1.8mA @ 3V

         * Standby current : max 1mA @ 3V (Operating Timer2)

         * Power down current : max 1.3mA @ 3V

   - ESD protection up to 8,000V

   - RoHS compliant 24QFN / 24SOP package

 

  * Applicability

   - Home application

   - Membrane switch replacement

   - Sealed control panels, keypads

   - Door key-lock matrix application

   - Touch screen replacement application