Rev. 1.00 4 2013-03-19 Rev. 1.00 5 2013-03-19
BS84B08A-3/BS84C12A-3
A/D 型触控按键单片机
A/D 转换器.....................................................................................................................61
A/D 简介 ............................................................................................................................... 61
A/D 转换寄存器介绍 ........................................................................................................... 61
A/D 转换器数据寄存器 – ADRL，ADRH ......................................................................... 62
A/D 转换控制寄存器 – ADCR0，ADCR1，ACERL ........................................................ 62
A/D 操作 ............................................................................................................................... 65
A/D 输入引脚 ....................................................................................................................... 66
A/D 转换步骤 ....................................................................................................................... 67
编程注意事项 ....................................................................................................................... 68
A/D 转换功能 ....................................................................................................................... 68
A/D 转换应用范例 ............................................................................................................... 69
触控按键功能 ................................................................................................................71
触控按键结构 ....................................................................................................................... 71
触控按键寄存器描述 ........................................................................................................... 71
触控按键操作 ....................................................................................................................... 76
触控按键中断 ....................................................................................................................... 78
编程注意事项 ....................................................................................................................... 79
串行接口模块 – SIM .....................................................................................................79
SPI 接口 ................................................................................................................................ 79
SPI 接口操作 ........................................................................................................................ 79
SPI 寄存器 ............................................................................................................................ 80
SPI 通信 ................................................................................................................................ 83
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2
C 接口 ................................................................................................................................. 85
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2
C 接口操作 ......................................................................................................................... 85
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2
C 寄存器 ............................................................................................................................. 86
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2
C 总线通信 ......................................................................................................................... 89
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2
C 总线起始信号 ................................................................................................................. 90
从机地址 ............................................................................................................................... 91
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2
C 总线读 / 写信号 .............................................................................................................. 91
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C 总线从机地址确认信号 ................................................................................................. 91
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2
C 总线数据和确认信号 ..................................................................................................... 91
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2
C 超时控制 ......................................................................................................................... 92
中断 ................................................................................................................................93
中断寄存器 ........................................................................................................................... 93
中断寄存器内容 ................................................................................................................... 94
中断操作 ............................................................................................................................... 95
外部中断 ............................................................................................................................... 96
触控按键中断 ....................................................................................................................... 97
定时 / 计数器中断 ................................................................................................................ 97
SIM 中断 ............................................................................................................................... 97
时基中断 ............................................................................................................................... 97
EEPROM 中断 ...................................................................................................................... 98
A/D 转换器中断 ................................................................................................................... 98
中断唤醒功能 ....................................................................................................................... 98
