[工学]第5章 嵌入式系统输入输出设备接口90

1、A Free sample background from Slide 1 2021-6-41 A Free sample background from Slide 2 2021-6-42 A Free sample background from Slide 3 2021-6-43 A Free sample background from Slide 4 2021-6-44 A Free sample background from Slide 5 2021-6-45 A Free sample background from Slide 6 2021-6-46 A Free sampl

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3、ground from Slide 13 2021-6-413 A Free sample background from Slide 14 2021-6-414 双积分式双积分式A/DA/D转换器电路结构图转换器电路结构图 积分输出波形积分输出波形 A Free sample background from Slide 15 2021-6-415 A Free sample background from Slide 16 2021-6-416 A Free sample background from Slide 17 2021-6-417 A Free sample background

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7、 A Free sample background from Slide 36 2021-6-436 A Free sample background from Slide 37 2021-6-437 A Free sample background from Slide 38 2021-6-438 A Free sample background from Slide 39 2021-6-439 A Free sample background from Slide 40 2021-6-440 MAX5380MAX5380数字输入与模拟输出对照表数字输入与模拟输出对照表 A Free sam

8、ple background from Slide 41 2021-6-441 A Free sample background from Slide 42 2021-6-442 A Free sample background from Slide 43 2021-6-443 （a a）LEDLED器件器件 （b b）共阳极接法）共阳极接法 （c c）共阴极接法）共阴极接法 A Free sample background from Slide 44 2021-6-444 A Free sample background from Slide 45 2021-6-445 A Free sam

9、ple background from Slide 46 2021-6-446 A Free sample background from Slide 47 2021-6-447 A Free sample background from Slide 48 2021-6-448 A Free sample background from Slide 49 2021-6-449 A Free sample background from Slide 50 2021-6-450 A Free sample background from Slide 51 2021-6-451 A Free sam

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11、在显示缓存中的格式）帧内存数据在显示缓存中的格式 (b)(b)显示缓存中的数据在显示屏上的显示格式显示缓存中的数据在显示屏上的显示格式 A Free sample background from Slide 58 2021-6-458 A Free sample background from Slide 59 2021-6-459 A Free sample background from Slide 60 2021-6-460 A Free sample background from Slide 61 2021-6-461 A Free sample background from Sl

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13、ide 68 2021-6-468 A Free sample background from Slide 69 2021-6-469 A Free sample background from Slide 70 2021-6-470 A Free sample background from Slide 71 2021-6-471 注意：注意：Address Address 从从0 x4D00002C0 x4D00002C到到 0 x4D0000480 x4D000048的地址不能够使用，保留用的地址不能够使用，保留用 于测试模式。于测试模式。 A Free sample backgroun

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16、d from Slide 84 2021-6-484 A Free sample background from Slide 85 2021-6-485 A Free sample background from Slide 86 2021-6-486 A Free sample background from Slide 87 2021-6-487 （3 3）自动（顺序）自动（顺序）X/YX/Y位置转换模式位置转换模式 当当ADCTSCADCTSC寄存器的寄存器的AUTO_PST=1AUTO_PST=1和和XY_PST=0XY_PST=0时进入自动（顺时进入自动（顺 序）序）X/YX/Y位置转换模式模式。首先写位置转换模式模式。首先写X X的位置转换数据到的位置转换数据到 ADCDAT0ADCDAT0寄存器的寄存器的XPDATAXPDATA位，然后写位，然后写Y Y的位置转换数据到的位置转换数据到 ADCDAT1ADCDAT1寄存器的寄存器的YPDA_TAYPDA_TA位，完成转换后，触摸屏接口产生中位，完成转换后，触摸屏接口产生中 断请求断请求(INT_ADC)(INT_ADC)到中断控制器。到中断控制器。 转换条件与分开的转换条件与