AN87391 - PSoC® 4 Segment LCD Direct Drive | Cypress Semiconductor

AN87391 - PSoC® 4 Segment LCD Direct Drive

Last Updated:

Mar 03, 2021

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AN87391 demonstrates how easy it is to drive segment LCD glass using the integrated LCD driver in PSoC® 4. PSoC 4 offers multiple LCD drive modes, very low power consumption, and provides a complete user interface and system solution. Using example projects, this application note explains low-power LCD design and a user interface solution that includes CapSense® .

Introduction

Most low-power portable handheld devices such as glucose meters, multimeters, and blood pressure monitors use a segment LCD to display information. Segment LCDs require an external driver to interface with a microcontroller. PSoC 4 implements an integrated low-power LCD driver that can directly drive segment LCD glass.

Project	Device		PSoC Creator Version		Development Kit CY8CKIT-xxx			Compiler
Project	Architecture	Silicon Revision	V3.2 or Higher	V3.1 or Lower	042 DVK	043 DVK	044 DVK	Keil	GCC	MDK	RVDS
Project 1	PSoC 4	Prod	YES	NO	YES	Yes*	Yes*	No	YES	YES	YES
Project 2	PSoC 4	Prod	YES	NO	YES	Yes*	Yes*	No	YES	YES	YES
Project 3	PSoC 4	Prod	YES	NO	YES	No	No	No	YES	YES	YES
Project 4	PSoC 4	Prod	YES	NO	No	Yes	No	No	YES	YES	YES

*The project can be easily adapted to this DVK. The project’s default settings may not be compatible with your device or kit, and you may need to change your project settings.

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you.

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

For the full version of this message, please download the PDF version.

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
AN87391 PSoC 4 Segment LCD Direct Drive.pdf	English	1.71 MB	03/02/2021
AN87391 PSoC® 4 Segment LCD Direct Drive.zip	English	196.25 KB	10/24/2016
AN87391 - PSoC® 4 Segment LCD Direct Drive (Chinese).pdf	Chinese	1.76 MB	03/02/2021
AN87391 PSoC® 4 Segment LCD Direct Drive (Japanese).pdf	Japanese	2.03 MB	03/03/2021

Related Resources

Application Notes
AN52927 - PSoC® 3 and PSoC 5LP - Segment LCD Direct Drive	03/02/2021
AN56384 - PSoC® 1 Segment LCD Direct Drive	06/26/2020

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