AP3890 Overview
Features (Continued) The AP389X is a low-cost high-resolution single chip solution for APA capacitive touch screen. It is an 8-bit single cycle 8051 microcontroller with I2C Interface. The chip includes 8-bit successive approximation analog-to-digital converters with an I2C interface and multiplexer-switcher circuits for flexible measurement of analog signal from APA panel.
AP3890 Key Features
- Mutual Capacitive Touch Sensing
- Dual Power Supply: 2.8V to 3.6V Operation
- Up to 30/38/36 Drive Lines and 17/22/23 Sense
- Dedicated Internal Two-wire Serial Control Bus
- Single-end Integrator with Programmable Gain
- Multiplexed Analog Digitization with Two 8-bit
- Single Cycle 8051 CPU Core, Maximum Operating Clock up to 24MHz from IOSC (Zero Wait State); 48MHz from IOSC(With Wait S
- 896×12-bit×2 XSRAM for 8-bit SAR ADC
- With Asynchronous I2C Slave Address Detection Logic Design 4 General Purpose GPIO Pins One External Interrupt Pin One UA
- ISP/IAP via I²C Port