EVAL-AD7142EB View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

EVAL-AD7142EB

Programmable Capacitance-to-Digital Converter with Environmental Compensation

Analog Devices 

AD7142

1

SERIAL

READBACK

GPIO INPUT LOW WHEN REGISTER IS READBACK

GPIO

INPUT

INT

OUTPUT

1

SERIAL

READBACK

GPIO INPUT LOW WHEN REGISTER IS READBACK

GPIO

INPUT

INT

OUTPUT

GPIO INPUT HIGH WHEN REGISTER IS READBACK

GPIO

INPUT

INT

OUTPUT

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

Table 14. GPIO Interrupt Behavior

GPIO_INPUT_CONFIG

GPIO Pin

00 = Negative Level Triggered 1

00 = Negative Level Triggered 0

01 = Positive Edge Triggered

1

01 = Positive Edge Triggered

0

10 = Negative Edge Triggered 1

10 = Negative Edge Triggered 0

11 = Positive Level Triggered

1

11 = Positive Level Triggered

0

GPIO_STATUS

0

1

1

0

0

1

1

0

GPIO INPUT HIGH WHEN REGISTER IS READBACK

GPIO

INPUT

INT

OUTPUT

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

INT

INT Behavior

1

Not triggered

0

Asserted while signal on GPIO pin is low

0

Pulses low at low-to-high GPIO transition

1

Not triggered

1

Pulses low at high-to-low GPIO transition

0

Not triggered

0

Asserted while signal on GPIO pin is high

1

Not triggered

Rev. 0 | Page 28 of 68

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