NRF52810-QFAA-R datasheet(139/483 Pages) NORDIC

139 / 483 page

Peripherals

LDETECT signal instead. See GPIO port and the GPIO pin details on page 138. DETECT signal behavior on

page 139 illustrates the DETECT signal behavior for these two alternatives.

PIN0.DETECT

PIN1.DETECT

PIN31.DETECT

DETECT

(Default mode)

DETECT

(LDETECT mode)

LATCH.0

LATCH.1

LATCH.31

Figure 40: DETECT signal behavior

The input buffer of a GPIO pin can be disconnected from the pin to enable power savings when the pin is

not used as an input, see GPIO port and the GPIO pin details on page 138. Inputs must be connected to

get a valid input value in the IN register, and for the sense mechanism to get access to the pin.

Other peripherals in the system can connect to GPIO pins and override their output value and

configuration, or read their analog or digital input value. See GPIO port and the GPIO pin details on page

138.

Selected pins also support analog input signals, see ANAIN in GPIO port and the GPIO pin details on page

138. The assignment of the analog pins can be found in Pin assignments on page 461.

Important: When a pin is configured as digital input, care has been taken to minimize increased

current consumption when the input voltage is between VIL and VIH. However, it is a good practice

to ensure that the external circuitry does not drive that pin to levels between VIL and VIH for a long

period of time.

6.8.2 Registers

Base address

Peripheral

Instance

Description

Configuration

0x50000000

GPIO

General purpose input and output

Table 36: Instances

Offset

Description

OUT

0x504

Write GPIO port

OUTSET

0x508

Set individual bits in GPIO port

OUTCLR

0x50C

Clear individual bits in GPIO port

4430_161 v1.0

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