ADC & TOUCH SCREEN
INTERFACE AD 转化和触摸屏接口
1、OVERVIEW
The 10-bit/12-bit CMOS ADC (Analog to Digital Converter) is a recycling type device with
8-channel analog#inputs. It converts the analog input signal into 10-bit/12-bit binary digital
codes at a maximum conversion rate of#1MSPS with 5MHz A/D converter clock. A/D
converter operates with on-chip sample-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 Screen Interface can control input pads (XP, XM, YP, and YM) to obtain (得
到)X/Y-position on the external touch#screen device. Touch Screen Interface contains
three main blocks; these are touch screen pads control logic,
ADC interface logic 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:
Resolution: 10-bit/12-bit ##分辨率:10 位/12 位。
Differential Nonlinearity: ± 2.0 LSB
Integral Nonlinearity: ± 4.0 LSB
Maximum Conversion Rate: 1MSPS #最高转换率:1MSPS。
Low Power Consumption #低功耗
Power Supply Voltage: 3.3V #供电电压:3.3V。
Analog Input Range: 0 ~ 3.3V ##模拟输入范围:0~3.3V。
On-chip sample-and-hold function #保持功能
Normal Conversion Mode #正常转换模式。
Separate X/Y position conversion Mode ##分离的 X / Y 坐标的转换模式。
Auto(Sequential) X/Y Position Conversion Mode ##自动(顺序)的 X / Y 坐标的转换模
式。
Waiting for Interrupt Mode #等待中断方式。
STOP mode wakeup source #停止模式下唤醒源
3、ADC & TOUCH SCREEN INTERFACE OPERATION
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