CY8C20111 ， CY8C20121
3.内容
引脚分配................................................. ............................. 3
典型电路................................................ ................. 4
线路1 ：一个按钮和一个LED [ 1 ] ........................ 4
线路2 ：一个按钮和一个LED与
I2C接口................................................ ................ 4
电路3 ：两个按钮和两个LED与
I2C接口................................................ ................ 5
电路4： 1.8 V I2C信号[ 2 ] ..... 5兼容性
电路5 ：断电的CapSense Express的
设备的低功耗要求.......................... 6
操作模式................................................ .............. 6
普通模式................................................ ............... 6
设置模式................................................ ................. 6
I2C接口................................................ ...................... 6
I2C器件寻址............................................... 6
I2C时钟延长............................................... 7 .....
格式寄存器写和读........................... 7
寄存器................................................. .......................... 7
OUTPUT_STATUS ................................................. .. 10
OUTPUT_PORT ................................................. ....... 10
CS_ENABLE ................................................. ............ 10
DIG_ENABLE ................................................. ........... 11
SET_STRONG_DM ................................................. 11
OP_SEL_x ................................................. ................ 13
LOGICAL_OPR_INPUTx .......................................... 13
CS_NOISE_TH ................................................. ........ 14
CS_BL_UPD_TH ................................................. ...... 14
CS_SETL_TIME ................................................. ....... 14
CS_OTH_SET ................................................. .......... 15
CS_HYSTERISIS ................................................. ..... 15
CS_DEBOUNCE ................................................. ...... 16
CS_NEG_NOISE_TH ................................................ 16
CS_LOW_BL_RST ................................................. ... 16
CS_FILTERING ................................................. ........ 17
CS_SCAN_POS_x ................................................. ... 17
CS_FINGER_TH_x ................................................. .. 18
CS_IDAC_x ................................................. .............. 18
I2C_ADDR_LOCK ................................................. .... 18
DEVICE_ID ................................................. .............. 19
DEVICE_STATUS ................................................. .... 19
I2C_ADDR_DM ................................................. ........ 20
CS_READ_BUTTON ................................................. 20
CS_READ_BLx ................................................. ........ 21
CS_READ_DIFFx ................................................. ..... 21
CS_READ_RAWx ................................................. .... 21
CS_READ_STATUS ................................................. 22
COMMAND_REG ................................................. ..... 22
布局准则和最佳做法......................... 24
例如PCB布局设计
两个CapSense按钮和两个LED .................... 26
工作电压................................................ ......... 27
CapSense的约束................................................ ... 27
电气规格................................................ 28
绝对最大额定值....................................... 28
工作温度............................................. 28
直流电气特性..................................... 28
DC芯片级规范.................................... 28
直流GPIO规范............................................ 28
DC POR和LVD规范.............................. 29
DC闪存写入规格................................... 29
直流I2C规范...............................................三十
CapSense的电气特性......................... 30
AC电气规格....................................... 31
AC芯片级规范.................................... 31
AC GPIO规范............................................ 31
AC I
2
C规格................................................ 31
经常使用的I2C命令............ 33的例子
订购信息................................................ ...... 34
订购代码定义......................................... 34
热阻................................................ ...... 34
回流焊规范........................................ 34
包图................................................ ............ 35
与缩略语................................................. ....................... 36
首字母缩写使用................................................ .............. 36
文档约定................................................ 36
计量单位............................................... ........ 36
数字规范................................................ 36
词汇表................................................. ......................... 37
文档历史记录页............................................... .. 42
销售，解决方案和法律信息...................... 43
全球销售和设计支持....................... 43
产品................................................. ................... 43
的PSoC解决方案................................................ ......... 43
文件编号： 001-53516修订版* G
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