AP3861 Overview
The AP386X is a low-cost high-resolution single chip solution for APA (All point addressable) capacitive touch screen. It is an 8-bit single cycle 8051 microcontroller with ICP Interface. The chip includes 12-bit successive approximation analog-to-digital converters with an I2C interface and multiplexer-switcher circuits for flexible measurement of analog signal from APA panel.
AP3861 Key Features
- Mutual Capacitive Touch Sensing
- Single Power Supply: 2.8V to 3.6V Operation
- Up to 17/23 Drive Lines and 10/12 Sense Lines
- Charge Pump Support up to 6V, Doubling SNR
- Internal Two-wire Serial Control Bus I2C
- Single-end Integrator with Programmable Gain Control
- Multiplexed Analog Digitization with 12-bit Resolution Scan SAR ADCs and Its Dedicated 2X to 8X Accumulator XSRAM Buffer
- With Asynchronous I2C Slave Address Detection Logic Design 4 General Purpose GPIO Pins One External Interrupt Pin
- ISP/IAP via I²C Port
- Operation Temperature Range: -40°C to 85°C