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XPT2046 中文资料

消耗积分:5 | 格式:pdf | 大小:0KB | 2014-06-13

zoulinqi110

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XPT2046中文资料。
目录 
1 特性................................................................................................................................................................... 4 
2 性能描述........................................................................................................................................................... 4 
3 应用................................................................................................................................................................... 4 
4 原理框图........................................................................................................................................................... 4 
5 极限参数........................................................................................................................................................... 5 
5.1 电气特性........................................................................................................................................... 6 
6 芯片引脚描述.................................................................................................................................................... 8 
6.1 引脚分配图....................................................................................................................................... 8 
6.1.1 QFN-16封装..................................................................................................................................... 8 
6.1.2 TSSOP－16封装............................................................................................................................... 8 
6.1.3 VFBGA-16封装................................................................................................................................ 8 
6.2 引脚功能描述................................................................................................................................... 9 
7 XPT2046典型参考特性................................................................................................................................. 10 
8 工作原理......................................................................................................................................................... 13 
8.1 基本原理描述................................................................................................................................. 13 
8.2 典型应用......................................................................................................................................... 13 
8.3 模拟输入特性................................................................................................................................. 14 
8.4 内部参考电压................................................................................................................................. 15 
8.5 外部参考电压输入......................................................................................................................... 15 
8.6 单端工作模式................................................................................................................................. 16 
8.7 差分工作模式................................................................................................................................. 16 
8.8 触摸屏应用建议............................................................................................................................. 17 
8.9 温度测量......................................................................................................................................... 17 
8.10 电池电压测量................................................................................................................................. 18 
8.11 压力测量......................................................................................................................................... 19 
9 数字接口......................................................................................................................................................... 19 
10 笔中断输出..................................................................................................................................... 21 
11 转换周期......................................................................................................................................... 22 
11.1 16时钟周期转换............................................................................................................................. 22 
11.2 数字时序......................................................................................................................................... 23 
11.3 15时钟周期转换............................................................................................................................. 24 
11.4 数据格式......................................................................................................................................... 25 
11.5 8位转换模式.................................................................................................................................. 25 
12 功耗................................................................................................................................................. 25 
13 芯片封装物理尺寸......................................................................................................................... 26 
13.1 QFN-16封装................................................................................................................................... 26 
13.2 TSSOP-16封装............................................................................................................................... 27 
13.3 VFBGA-48封装.............................................................................................................................. 28 
 
图目录 

图 1 XPT2046实物图....................................................................................................................................... 4 
图 2 XPT2046原理框....................................................................................................................................... 4 
图 3 XPT2046的QFN-16封装管脚................................................................................................................. 8 
图 4 XPT2046的TSSOP-16封装管脚............................................................................................................. 8 
图 5 XPT2046的VFBGA-16封装管脚........................................................................................................... 8 
图 6 XPT2046典型应用图............................................................................................................................. 13 
图 7 XPT2046模拟输入简图......................................................................................................................... 14 
图 8 内部电压源示意图................................................................................................................................. 15 
图 9 单端模式工作示意图（SER/——
DFR＝1，Y开关闭合，XP作为模拟输入）....................................... 16 
图 10 差分参考源工作模式简图（SER/——
DFR＝0，Y开关闭合，X+作为模拟输入）....................... 16 
图 11 温度测量功能示意图..................................................................................................................... 17 
图 12 电池电压测量功能模块图............................................................................................................. 18 
图 13 压力测量模块图............................................................................................................................. 19 
图 14 8位总线接口，无DCLK时钟延迟，24时钟周期转换时序....................................................... 20 
图 15——PEN——IRQ 功能模块图............................................................................................................................ 22 
图 16 8位总线接口，无DCLK时钟延迟 16时钟周期转换时序.......................................................... 23 
图 17 详细时序图..................................................................................................................................... 23 
图 18 最快转换速率，15时钟周期转换................................................................................................. 24 
图 19 理想情况输入电压和输出编码对应关系...................................................................................... 25 
图 20 QFN-16封装尺寸........................................................................................................................... 26 
图 21 TSSOP-16封装尺寸....................................................................................................................... 27 
图 22 VFBGA－48封装尺寸................................................................................................................... 28 
 
表目录 
 
表 1 芯片极限参数表....................................................................................................................................... 5 
表 2 XPT2046电气特性表............................................................................................................................... 6 
表 3 单端模式输入配置（SER/——DFR=1）...................................................................................................... 14 
表 4 差分模式输入配置（SER/——DFR=0）...................................................................................................... 15 
表 5 制字的控制位命令................................................................................................................................. 20 
表 6 控制字节各位描述................................................................................................................................. 21 
表 7 掉电和内部参考电压选择..................................................................................................................... 21 
表 8 时序规范说明......................................................................................................................................... 24 
 
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评论(2)
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烤猪1 2019-07-11
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多谢 收起回复
cegxu 2018-06-27
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不错，很好的资料，就是积分要的多了点 收起回复

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