AN86526 - PSoC® 4 I2C Bootloader | Cypress Semiconductor

AN86526 - PSoC® 4 I2C Bootloader

Last Updated:

Mar 02, 2021

Version:

AN86526 describes an I2C-based bootloader for PSoC® 4. In this application note, you will learn how to use PSoC Creator¿ to quickly and easily build an I2C-based bootloader project and bootloadable project. You will also see how to build an I2C-based embedded bootloader host program.

Introduction

Bootloaders are a common part of MCU system design. A bootloader makes it possible for a product’s firmware to be updated in the field. At the factory, initial programming of firmware into a product is typically done through the MCU's Joint Test Action Group (JTAG) or ARM® serial wire debug (SWD) interface. However, these interfaces are usually not accessible in the field.

This is where bootloading comes in. Bootloading is a process that allows you to upgrade your system firmware over a standard communication interface such as USB, I2C, UART, or SPI. A bootloader communicates with a host to get new application code or data and writes it into the device's flash memory.

The following table indicates the PSoC devices, PSoC Creator versions, compilers, and development kits that will work with this application note project:

Project	Device		PSoC Creator Version		Development Kit CY8CKIT-xxx		Compiler
Project	Architecture	Silicon Revision	V3.0 SP2 or higher	V3.0 or lower	042/ 040 DVK	001 DVK	Keil	GCC	MDK	RVDS
AN86526.zip	PSoC 4	Prod	YES	NO	YES	NO	NO	YES	YES	YES

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Translated documents are for reference only. We recommend that you refer to the English-language version of a document if you are engaged in development of a design.

Related Files

File Title	Language	Size	Last Updated
AN86526.zip	English	200.11 KB	03/02/2021
AN86526 - PSoC 4 I2C Bootloader.pdf	English	3.57 MB	03/02/2021
AN86526 PSoC(R) 4 I2C Bootloader (Chinese).pdf	Chinese	4.48 MB	03/02/2021
AN86526 PSoC® 4 and PSoC Analog Coprocessor I2C Bootloader (Japanese).pdf	Japanese	4.47 MB	03/02/2021

Related Resources

Code Examples
CE95314 - PSoC® 3, PSoC 4, and PSoC 5LP EZI2C	07/19/2017

Application Notes
AN211293 - Getting Started with PSoC® Analog Coprocessor	06/03/2020
AN60317 - PSoC® 3 and PSoC 5LP I2C Bootloader	03/02/2021
AN61290 - PSoC® 3 and PSoC 5LP Hardware Design Considerations	05/28/2020
AN68272 - PSoC® 3, PSoC 4, PSoC 5LP, and PSoC Analog Coprocessor UART Bootloader	03/03/2021
AN73854 - PSoC® - Introduction to Bootloaders	03/02/2021
AN79953 - Getting Started with PSoC 4	04/26/2021
AN84858 - PSoC® 4 Programming Using an External Microcontroller (HSSP)	03/10/2021

Development Kits/Boards
CY8CKIT-042 PSoC® 4 Pioneer Kit	02/16/2021