NRF52811-QCAA-R datasheet(267/444 Pages) NORDIC

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Peripherals

Note that when setting the limits, CH[n].LIMIT.HIGH shall always be higher than or equal to

CH[n].LIMIT.LOW . In other words, an event can be fired only when the input signal has been sampled

outside of the defined limits. It is not possible to fire an event when the input signal is inside a defined

range by swapping high and low limits.

The comparison to limits always takes place, there is no need to enable it. If comparison is not required

on a channel, the software shall simply ignore the related events. In that situation, the value of the limits

registers is irrelevant, so it does not matter if CH[n].LIMIT.LOW is lower than CH[n].LIMIT.HIGH or not.

6.17.11 Registers

Base address

Peripheral

Instance

Description

Configuration

0x40007000

SAADC

Analog-to-digital converter

Table 79: Instances

Offset

Description

TASKS_START

0x000

Start the ADC and prepare the result buffer in RAM

TASKS_SAMPLE

0x004

Take one ADC sample, if scan is enabled all channels are sampled

TASKS_STOP

0x008

Stop the ADC and terminate any on-going conversion

TASKS_CALIBRATEOFFSET

0x00C

Starts offset auto-calibration

EVENTS_STARTED

0x100

The ADC has started

EVENTS_END

0x104

The ADC has filled up the Result buffer

EVENTS_DONE

0x108

A conversion task has been completed. Depending on the mode, multiple conversions might be

needed for a result to be transferred to RAM.

EVENTS_RESULTDONE

0x10C

A result is ready to get transferred to RAM.

EVENTS_CALIBRATEDONE

0x110

Calibration is complete

EVENTS_STOPPED

0x114

The ADC has stopped

EVENTS_CH[0].LIMITH

0x118

Last results is equal or above CH[0].LIMIT.HIGH

EVENTS_CH[0].LIMITL

0x11C

Last results is equal or below CH[0].LIMIT.LOW

EVENTS_CH[1].LIMITH

0x120

Last results is equal or above CH[1].LIMIT.HIGH

EVENTS_CH[1].LIMITL

0x124

Last results is equal or below CH[1].LIMIT.LOW

EVENTS_CH[2].LIMITH

0x128

Last results is equal or above CH[2].LIMIT.HIGH

EVENTS_CH[2].LIMITL

0x12C

Last results is equal or below CH[2].LIMIT.LOW

EVENTS_CH[3].LIMITH

0x130

Last results is equal or above CH[3].LIMIT.HIGH

EVENTS_CH[3].LIMITL

0x134

Last results is equal or below CH[3].LIMIT.LOW

EVENTS_CH[4].LIMITH

0x138

Last results is equal or above CH[4].LIMIT.HIGH

EVENTS_CH[4].LIMITL

0x13C

Last results is equal or below CH[4].LIMIT.LOW

EVENTS_CH[5].LIMITH

0x140

Last results is equal or above CH[5].LIMIT.HIGH

EVENTS_CH[5].LIMITL

0x144

Last results is equal or below CH[5].LIMIT.LOW

EVENTS_CH[6].LIMITH

0x148

Last results is equal or above CH[6].LIMIT.HIGH

EVENTS_CH[6].LIMITL

0x14C

Last results is equal or below CH[6].LIMIT.LOW

EVENTS_CH[7].LIMITH

0x150

Last results is equal or above CH[7].LIMIT.HIGH

EVENTS_CH[7].LIMITL

0x154

Last results is equal or below CH[7].LIMIT.LOW

INTEN

0x300

Enable or disable interrupt

INTENSET

0x304

Enable interrupt

INTENCLR

0x308

Disable interrupt

STATUS

0x400

Status

ENABLE

0x500

Enable or disable ADC

CH[0].PSELP

0x510

Input positive pin selection for CH[0]

CH[0].PSELN

0x514

Input negative pin selection for CH[0]

CH[0].CONFIG

0x518

Input configuration for CH[0]

CH[0].LIMIT

0x51C

High/low limits for event monitoring a channel

CH[1].PSELP

0x520

Input positive pin selection for CH[1]

4454_140 v1.0

267

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