WM8311

目录

预生产

描述....................................................................................................... 1

特点............................................................................................................ 1

APPLICATIONS..................................................................................................... 1

框图................................................ ................................................ 2

典型应用................................................ .................................... 3

目录............................................... .......................................... 4

1

引脚配置................................................ .................................. 9

2

订购信息................................................ ......................... 9

3

引脚说明................................................ ..................................... 10

4

热特性................................................ ................ 14

5

绝对最大额定值............................................... ............... 15

6

推荐工作条件.......................................... 16

7

电气特性................................................ ........... 17

DC- DC同步降压转换器............................................ ... 17

DC-DC升压转换............................................ ............................. 19

CURRENT SINKS................................................................................................ 19

LDO稳压器................................................ ............................................ 20

复位门限................................................ ....................................... 23

参考................................................. .................................................. 23

电池充电器................................................ ......................................... 24

USB电源控制............................................... ..................................... 24

通用输入/输出（ GPIO ） .......................................... 26

数字接口................................................ .................................... 27

辅助ADC ................................................ .............................................. 27

触摸屏控制器............................................... ........................ 28

系统状态LED驱动器.............................................. ..................... 28

的时钟频率....................................................................................................... 28

8

典型功耗............................................... ............ 29

9

典型性能数据............................................... ............... 30

9.1 DC -DC转换器............................................. .......................................... 30

9.2 LDO稳压器............................................... ............................................. 30

10

信号时序要求............................................... ............. 31

10.1控制接口............................................... .................................... 31

11

设备描述................................................ .............................. 33

11.1概述............................................... ................................ 33

11.2电源状态............................................... .............................................. 33

11.3电源状态控制.............................................. ............................... 35

11.4电源状态中断.............................................. .......................... 40

11.5电源状态GPIO主治............................................. ................... 41

11.6 ON引脚功能.............................................. ............................................ 41

11.7复位引脚功能.............................................. ..................................... 42

12

控制接口................................................ .............................. 44

12.1概述............................................... ................................ 44

12.2 2线（I2C ）控制模式......................................... ............................. 44

12.3 4线（ SPI ）控制模式......................................... ............................. 47

12.4寄存器LOCKING ............................................... ....................................... 47

12.5软件复位和芯片ID ............................................ ...................... 48

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

7.10

7.11

7.12

7.13

7.14

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PP ， 2012年5月，版本3.1

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