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AD7142 датащи(PDF) 28 Page - Analog Devices

номер детали AD7142
подробное описание детали  Programmable Capacitance-to-Digital Converter with Environmental Compensation
PDF  68 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7142 датащи(HTML) 28 Page - Analog Devices

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AD7142
Rev. 0 | Page 28 of 68
GPIO
INPUT
INT
OUTPUT
SERIAL
READBACK
GPIO
INPUT
INT
OUTPUT
1
GPIO INPUT LOW WHEN REGISTER IS READBACK
GPIO INPUT HIGH WHEN REGISTER IS READBACK
NOTES
1. READ GPIO_STATUS REGISTER TO RESET INT OUTPUT.
Figure 40. INT Output Controlled by the GPIO Input Example,
GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 10
GPIO
INPUT
INT
OUTPUT
SERIAL
READBACK
GPIO
INPUT
INT
OUTPUT
1
GPIO INPUT LOW WHEN REGISTER IS READBACK
GPIO INPUT HIGH WHEN REGISTER IS READBACK
NOTES
1. READ GPIO_STATUS REGISTER TO RESET INT OUTPUT.
Figure 41. INT Output Controlled by the GPIO Input Example,
GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 11
Table 14. GPIO Interrupt Behavior
GPIO_INPUT_CONFIG
GPIO Pin
GPIO_STATUS
INT
INT Behavior
00 = Negative Level Triggered
1
0
1
Not triggered
00 = Negative Level Triggered
0
1
0
Asserted while signal on GPIO pin is low
01 = Positive Edge Triggered
1
1
0
Pulses low at low-to-high GPIO transition
01 = Positive Edge Triggered
0
0
1
Not triggered
10 = Negative Edge Triggered
1
0
1
Pulses low at high-to-low GPIO transition
10 = Negative Edge Triggered
0
1
0
Not triggered
11 = Positive Level Triggered
1
1
0
Asserted while signal on GPIO pin is high
11 = Positive Level Triggered
0
0
1
Not triggered



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