NRF52820-QDAA-R datasheet(10/437 Pages) NORDIC

10 / 437 page

2 About this document

This document is organized into chapters that are based on the modules and peripherals available in the

IC.

2.1 Document status

The document status reflects the level of maturity of the document.

Document name

Description

Objective Product Specification (OPS)

Applies to document versions up to 1.0.

This document contains target specifications for

product development.

Product Specification (PS)

Applies to document versions 1.0 and higher.

This document contains final product

specifications. Nordic Semiconductor ASA reserves

the right to make changes at any time without

notice in order to improve design and supply the

best possible product.

Table 1: Defined document names

2.2 Peripheral chapters

Every peripheral has a unique capitalized name or an abbreviation of its name, e.g. TIMER, used for

identification and reference. This name is used in chapter headings and references, and it will appear in

the ARM® Cortex® Microcontroller Software Interface Standard (CMSIS) hardware abstraction layer to

identify the peripheral.

The peripheral instance name, which is different from the peripheral name, is constructed using the

peripheral name followed by a numbered postfix, starting with 0, for example, TIMER0. A postfix is

normally only used if a peripheral can be instantiated more than once. The peripheral instance name is

also used in the CMSIS to identify the peripheral instance.

The chapters describing peripherals may include the following information:

• A detailed functional description of the peripheral

• Register configuration for the peripheral

• Electrical specification tables, containing performance data which apply for the operating conditions

described in Recommended operating conditions on page 430.

2.3 Register tables

Individual registers are described using register tables. These tables are built up of two sections. The first

three colored rows describe the position and size of the different fields in the register. The following rows

describe the fields in more detail.

4463_156 v1.0

NRF52820-QDAA-R Datasheet(PDF) 10 Page - Nordic Semiconductor