4.2″ PCAP Touchscreen LCD GUI (Production Module) – SuRG42-CP

4.2″ PCAP Touchscreen LCD GUI (Production Module) – SuRG42-CP - Image 2

4.2″ PCAP Touchscreen LCD GUI (Production Module) – SuRG42-CP - Image 3

4.2″ PCAP Touchscreen LCD GUI (Production Module) – SuRG42-CP

Part #: SuRG42-CP (Production Module)
For distribution pricing, click on the Purchase Info tab.

Status: Prototypes
Production guaranteed: Until 2035
Warranty: 1 Year (Extended available)

Associated Part #: SuRG42-CP (Production Module)

4.2″ Sunlight-Readable TFT Display
400 x 300 three color display with Projected Capacitive (PCAP) Touchscreen
FreeRTOS Real Time Operating System Project Files
Advanced Rapid Software Development Platform provided by STM32Cube IDE
STM U585 160MHz MCU (Arm Cortex M33) with 2MB Internal Flash, 768K Internal SRAM
16MB QSPI Flash, 2MB Low Power SRAM, 128KB EEPROM
Expansion: UART, I²C, SPI, ADC, GPIO, CAN, USB Host/Device

>> See the brochure

SKU: SuRG42-CP (Production Module) Categories: SuRG, SuRG 42 CP, Touch Screen GUI Development Kits

Overview

The 4.2″ PCAP Touchscreen LCD (Production Module) – SuRG42-CP – adds a perfect mix of a 4.2″ Sunlight Readable display, long battery life, easy to code graphics and a high performance MCU to FDI’s SuRG® product family. Featuring a crystal-clear, sunlight readable display that eliminates the need for a backlight resulting in ultra low power consumption. The system contains a high performance 32-Bit MCU with best in class power management making SuRG the optimal choice for outdoor industrial applications. This unit contains a PCAP Touchscreen with a PWM-controllable front-light, allowing for usage even in environments with low ambient lighting.

Get into production faster as FDI offers low cost customization services for customer specific hardware, software or packaging applications at volumes of 500 units or more.

Quick Start Documentation

Quick Start Guide

Development Environment

SuRG42-CP Production Module
Segger J-Link for programming and debugging
MicroSD card appears as a USB Flash Drive to the PC
Base Projects are
- Running FreeRTOS Real Time Operating System
- Developed in the STM32Cube IDE with the GNU C/C++ Toolchain and GDB Debugger
- Supported by Segger RTT (Real Time Transfer)

Specifications

Microcontroller	STM U585
- Speed	160MHz
- Internal SRAM	768KB
- Internal Flash	2MB
External Flash	16MB
External Flash Type	QSPI (4 Bit serial)
Non-volatile data storage	Internal 128Kb EEPROM
SD Card Bus interface	4-Bit SD mode @ 50MHz
USB	USB Device Mini-AB for Host or Device Operation
Expansion	50-pin Fine Pitch I/O Connector for External Expansion:Serial Ports, UART, I²C, SPI, USB Host/Device interface
Temperature Sensor	Yes
JTAG	Cortex-M 6-pin SWD JTAG Debug Tag-Connect
RTC	Internal RTC, Supercap backup
Audio	On-board Buzzer
Operating Temperature:	-20° to 70° C
Storage Temperature:	-30° to 80° C
Power Input	Alt Power Connector or USB-C (5V 3A) Connector
Input Voltage:	3.0 to 24.0 V DC (Alt Pwr Connector) 5.0V (USB C Connector)
Power Consumption:	<= 40uA (power off), <= 2.6mA (idle), <= 50mA (active, front light off), <= 54mA (active, front light on (value may change based on PWM level))
Overall Size	116:84(W) x 78.61(H) x 17.68 (D) mm
Mounting:	#6 screws in 4 corners
Weight:	98 grams (typ)
RoHS Compliant:	Yes
Screen Size (diagonal)	4.2 inches
Display Technology	Reflective TFT-LCD
Resolution	400 x 300
Brightness (when front light is on)	~20 nits
Ambient Contrast Ratio (ACR)	17:1 (frontlight off), 15:1 (frontlight on)
Aspect Ratio	4 x 3
Colors:	3 (RWB) (2-bit)
Vertical Viewing Angle:	60/60° U/D
Horizontal Viewing Angle:	60/60° L/R
Surface Finish:	Anti-glare
Touchscreen type	Projected Capacitive
Active Area:	63.60 x 84.80 MM
Response Time:	30ms Tr+Tf (typ)
Kit Available?	Yes

Documentation

Current Documentation – Rev 1.0

Title	Type	Format	Date
Start Here Guide for SuRG42-CP	Start Here Guide	pdf	mm/dd/yyyy
Brochure	Brochure	pdf	09/24/2025
SuRG42-CP Quick Start Guide	Quick Start Guide	pdf	09/24/2025

Software

Title	Type	Format	Date
Converting Images for Use on SuRG	Instruction Document	.pdf	09/23/2025
SD Card Files	SD Card Files	.zip	mm/dd/yyyy
SuRG Image Conversion Scripts	Scripts in .zip	.zip	09/23/2025

FDI Software

SuRG® Source Files
SuRG® is an open source, embedded middleware platform providing underlying RTOS and processor abstraction features enhancing portability of application code to multiple ARM platforms with high reusability.

Recommended 3rd Party Software

STM32CubeIDE
STM32 compiler and development suite.

FreeRTOS
Developed in partnership with the world’s leading chip companies over a 12 year period, FreeRTOS is the market leading real time operating system (or RTOS), and the de-facto standard solution for microcontrollers and small microprocessors.

LVGL
LVGL is an open-source, lightweight library for designing Graphical User Interfaces (GUI) for any embedded application that operates with a graphical LCD. It is compatible with single-task and multitask environments. It may be adapted to any size physical and virtual display with any LCD controller and CPU.

J-Link Software Downloads
Various Various Download latest software and drivers from the SEGGER website.

Resources

J-Link Product Page
SEGGER J-Links are the most widely used line of debug probes available today. They’ve been proven for more than 10 years with over 250,000 units sold, including OEM versions and on-board solutions. This popularity stems from the unparalleled performance, extensive feature set, large number of supported CPUs, and compatibility with all popular development environments.

Support

Once you’ve picked up your SuRG Unit, FDI is with you every step of the way. We offer support and documentation on our forums.

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Quick Start GUI Program

Customer Provides Menu Inputs
Photoshop, PowerPoint or even napkin drawings
Simple Menus and Functions usually less than 8 screens
1-2 week turnaround for $5,000 or less
Customer starts API level application development immediately