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参数资料
| 型号： | AD7147WPACPZ-500R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 25/73页 |
| 文件大小： | 0K |
| 描述： | IC CAP-TO-DGTL CONV PROG 24LFCSP |
| 标准包装： | 500 |
| 系列： | CapTouch™ |
| 类型： | 电容数字转换器 |
| 分辨率（位）： | 16 b |
| 采样率（每秒）： | 250k |
| 数据接口： | 串行，SPI? |
| 电压电源： | 单电源 |
| 电源电压： | 2.6 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 24-LFCSP-VQ（4x4） |
| 包装： | 带卷 (TR) |
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AD7147
Data Sheet
Rev. D | Page 30 of 72
STAGE0
STAGE1
STAGE2
STAGE3
STAGE4
STAGE5
STAGE6
STAGE7
STAGE8
STAGE9
STAGE10
STAGE11
23
1
INT
CONVERSIONS
SERIAL
READS
NOTES
THIS IS AN EXAMPLE OF A CDC CONVERSION-COMPLETE INTERRUPT.
THIS TIMING EXAMPLE SHOWS THAT THE INTERRUPT OUTPUT HAS BEEN ENABLED TO BE ASSERTED AT THE END OF A CONVERSION CYCLE FOR
STAGE0, STAGE5, AND STAGE9. THE INTERRUPTS FOR ALL OTHER STAGES HAVE BEEN DISABLED.
STAGEx CONFIGURATION PROGRAMMING NOTES FOR STAGE0, STAGE5, AND STAGE9 (x = 0, 5, 9):
STAGEx_LOW_INT_ENABLE (ADDRESS 0x005) = 0
STAGEx_HIGH_INT_ENABLE (ADDRESS 0x006) = 0
STAGEx_COMPLETE_INT_ENABLE (ADDRESS 0x007) = 1
STAGEx CONFIGURATION PROGRAMMING NOTES FOR STAGE1 THROUGH STAGE8, STAGE10, AND STAGE11 (x = 1, 2, 3, 4, 5, 6, 7, 8, 10, 11):
STAGEx_LOW_INT_ENABLE (ADDRESS 0x005) = 0
STAGEx_HIGH_INT_ENABLE (ADDRESS 0x006) = 0
STAGEx_COMPLETE_INT_ENABLE (ADDRESS 0x007) = 0
SERIAL READBACK REQUIREMENTS FOR STAGE0, STAGE5, AND STAGE9 (THIS READBACK OPERATION IS REQUIRED TO CLEAR THE INTERRUPT OUTPUT.):
1READ THE STAGE0_COMPLETE_INT_STATUS (ADDRESS 0x00A) BIT
2READ THE STAGE5_COMPLETE_INT_STATUS (ADDRESS 0x00A) BIT
3READ THE STAGE9_COMPLETE_INT_STATUS (ADDRESS 0x00A) BIT
06663-
038
Figure 41. Example of Configuring the Registers for Conversion-Complete Interrupt Setup
42
1
INT
CONVERSIONS
SERIAL
READS
NOTES
THIS IS AN EXAMPLE OF A SENSOR-TOUCH INTERRUPT FOR A CASE WHERE THE LOW THRESHOLD LEVELS WERE EXCEEDED.
FOR EXAMPLE, THE SENSOR CONNECTED TO STAGE0 AND STAGE9 WERE CONTACTED, AND THE LOW THRESHOLD LEVELS WERE EXCEEDED, RESULTING
IN THE INTERRUPT BEING ASSERTED. THE STAGE6 INTERRUPT WAS NOT ASSERTED BECAUSE THE USER DID NOT CONTACT THE SENSOR CONNECTED TO
STAGE6.
STAGEx CONFIGURATION PROGRAMMING NOTES FOR STAGE0, STAGE6, AND STAGE9 (x = 0, 6, 9):
STAGEx_LOW_INT_ENABLE (ADDRESS 0x005) = 1
STAGEx_HIGH_INT_ENABLE (ADDRESS 0x006) = 0
STAGEx_COMPLETE_INT_ENABLE (ADDRESS 0x007) = 0
STAGEx CONFIGURATION PROGRAMMING NOTES FOR STAGE1 THROUGH STAGE7, STAGE8, STAGE10, AND STAGE11 (x = 1, 2, 3, 4, 5, 6, 7, 8, 10, 11):
STAGEx_LOW_INT_ENABLE (ADDRESS 0x005) = 0
STAGEx_HIGH_INT_ENABLE (ADDRESS 0x006) = 0
STAGEx_COMPLETE_INT_ENABLE (ADDRESS 0x007) = 0
SERIAL READBACK REQUIREMENTS FOR STAGE0 AND STAGE9 (THIS READBACK OPERATION IS REQUIRED TO CLEAR THE INTERRUPT OUTPUT.):
1READ THE STAGE0_LOW_INT_STATUS (ADDRESS 0x008) BIT
2READ THE STAGE5_LOW_INT_STATUS (ADDRESS 0x008) BIT
STAGE0
STAGE1
STAGE2
STAGE3
STAGE4
STAGE5
STAGE6
STAGE7
STAGE8
STAGE9
STAGE10
STAGE11
06663-
039
Figure 42. Example of Configuring the Registers for Sensor-Touch Interrupt Setup
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