Analog Devices EE-231 In-Circuit Programming of an SPI Flash with SHARC Processors

This document is a technical note on using Analog Devices DSPs, processors, and development tools. It provides technical information on in-circuit programming of an SPI flash with SHARC processors.

Brand: Analog Devices
Category: Other Electronics
Document type: Application Note
Language: English
Pages: 6
File format: PDF
File size: 75 KB
Published: 03 August, 2012
Updated: 28 September, 2023
Models: ADSP-2126X, ADSP-2136X, ADSP-2137X
MD5 checksum: 013DA6E011DAB21D4ADA799E2C047FCB
PDF: Analog Devices EE-231 In-Circuit Programming of an SPI Flash with SHARC Processors PDF

About this manual

This document explains the procedure for in-circuit programming of an SPI flash memory device using Analog Devices SHARC processors (ADSP-2126x, ADSP-2136x, and ADSP-2137x). It details the specific challenges regarding SPI mode and word transfer order that must be addressed when booting from SPI flash. The text notes that earlier SHARC processors do not support this booting method.

What's inside

Introduction
Default SPI Settings
SPI Interface and Status Bits
Flash Programmer Functions
Write Enable
Write Disable
Read Status Register
Write Status Register
Read Data Bytes

Frequently asked questions

Which SHARC processors support booting from SPI flash devices?

The ADSP-2126x, ADSP-2136x, and ADSP-2137x processors are able to boot from SPI flash devices.

Which SPI flash memory device is used in this example?

The example uses an STMicroelectronics M25P20 serial flash memory.

What SPI mode do SHARC processors use by default?

By default, SHARC processors use SPI mode 3.

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