ADC & TOUCHSCREEN INTERFACE AD转化和触摸屏接口

1、OVERVIEW

The 10-bit/12-bitCMOS ADC (Analog to Digital Converter) is a recycling type device with8-channel analog inputs. It converts the analog input signal into10-bit/12-bit binary digital codes at a maximum conversion rate of 1MSPSwith 5MHz A/D converter clock. A/D converter operates with on-chipsample-and-hold function. The power down mode is supported.

10/12位CMOS的ADC （模数转换器）是一种循环类型的装置，具有8位通道模拟输入。它将模拟的输入信号转换成10位/12位二进制数字编码，在5MHz的ADC时钟，最大转换率是1MSPS。 ADC转换器带有片上采样保持功能。电源休眠模式的支持。

Touch ScreenInterface can control input pads (XP, XM, YP, and YM) to obtain （得到）X/Y-position on the externaltouch screen device. Touch Screen Interface contains three main blocks;these are touch screen pads control logic,ADC interfacelogic and interrupt generation logic.

触摸屏接口包含了触摸屏控制逻辑、ADC 界面逻辑和中断发生逻辑。

2、FEATURES特性

The ADC &Touch Screen interface includes the following features: