NRF52811-QCAA-R datasheet(145/444 Pages) NORDIC

145 / 444 page

Peripherals

Bit number

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Access

Field

Value ID

Value

Description

RW TEP

Pointer to task register. Accepts only addresses to registers

from the Task group.

6.11.2.8 CHG[n] (n=0..5)

Address offset: 0x800 + (n × 0x4)

Channel group n

Bit number

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

f e d c b a Z Y X W V U T S R Q P O N M L K J I H G F E D C B A

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Access

Field

Value ID

Value

Description

A-f

RW CH[i] (i=0..31)

Include or exclude channel i

Excluded

Exclude

Included

Include

6.11.2.9 FORK[n].TEP (n=0..31)

Address offset: 0x910 + (n × 0x4)

Channel n task end-point

Bit number

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A

Reset 0x00000000

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Access

Field

Value ID

Value

Description

RW TEP

Pointer to task register

6.12 PWM — Pulse width modulation

The pulse with modulation (PWM) module enables the generation of pulse width modulated signals

on GPIO. The module implements an up or up-and-down counter with four PWM channels that drive

assigned GPIOs.

The following are the main features of a PWM module:

• Programmable PWM frequency

• Up to four PWM channels with individual polarity and duty cycle values

• Edge or center-aligned pulses across PWM channels

• Multiple duty cycle arrays (sequences) defined in RAM

• Autonomous and glitch-free update of duty cycle values directly from memory through EasyDMA (no

CPU involvement)

• Change of polarity, duty cycle, and base frequency possibly on every PWM period

• RAM sequences can be repeated or connected into loops

4454_140 v1.0

145

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