AD7879
目录
特点................................................. ............................................. 1
应用................................................. ...................................... 1
功能框图............................................... ............... 1
概述................................................ ......................... 1
修订历史................................................ ............................... 2
规格................................................. .................................... 3
SPI时序规范（ AD7879 ） ......................................... 4
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2
I2C时序规范（ AD7879-1 ） ..................................... 5
绝对最大额定值............................................... ............. 6
ESD注意事项................................................ .................................. 6
引脚配置和功能说明............................. 7
典型性能特征............................................. 8
术语................................................. ................................... 11
工作原理............................................... ....................... 12
触摸屏原理............................................... ............. 12
测量触摸屏输入.............................................. 13
触摸压力测量.............................................. .... 14
温度测量................................................ ....... 14
中位数和平均滤波器.............................................. ......... 16
AUX / VBAT / GPIO引脚............................................ ....................... 17
辅助输入................................................ ........................... 17
电池输入................................................ ............................... 17
限制比较................................................ ...................... 17
GPIO ................................................. ........................................... 17
注册地图................................................ ................................... 19
详细寄存器说明............................................... ...... 20
控制寄存器................................................ ............................ 24
控制寄存器1 ............................................... ....................... 24
控制寄存器2 ............................................... ....................... 26
控制寄存器3 ............................................... ....................... 27
中断................................................. .................................... 28
同步AD7879到主机CPU ......................... 29
串行接口................................................ ................................ 30
SPI接口................................................ ................................ 30
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2
C兼容接口.............................................. ............ 32
接地和布局............................................... ................... 35
芯片级封装............................................... .................... 35
WLCSP大会注意事项........................................... 35
外形尺寸................................................ ....................... 36
订购指南................................................ .......................... 36
修订历史
10月8日 - 修订版0 ：初始版
第0版|第36 2
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