Optional
i.MX 6ULL
LCD_WR_RWn
LCD_RD_E
GPIO
40-pin LCD
FPC Connector
54132-4062
SPI_MOSI
Touch Screen
Controller
TSC2046
DATA[15..0]
SPI_MISO
LCD_DATA[15..0]
LCD_RS
SPI_CS#
SPI_CLK
LCD_RESET/WDOG
/WR
/RD
D/C
/RES
CS#
IMO
10 k
1
0
k
VDD
IOVDD
LEDA
VDD_3V3 VDD_1V8 VDD_3V3
VDD_2V8
OR
NVCC_LCD
VDD_1V8
YU
XL
YD
XR
VSS
GND
LED_K
System Overview
10
TIDUEW7 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Integrated Power Supply Reference Design for NXP i.MX 6ULL
2.2.5
LCD Screen Connector
This design has a mountable LCD screen. The i.MX 6ULL processor's LCD interface can be used to
control a wide range of display devices varying in size and capability. Many of these displays have an
asynchronous parallel MPU interface for command and data transfer to an integrated frame buffer. There
are other popular displays that support moving pictures and require the RGB interface mode (called
DOTCLK interface in this document) or the VSYNC mode for high-speed data transfers. In addition to
these displays, it is also common to provide support for digital video encoders that accept ITU-R BT.656
format. The goal is to select an LCD screen that is suitable for the application and compatible with the
processor.
The Newhaven Display NHD-2.4-240320CF-CTXI#-F backlight and LCD screen selected for this design
can make use of the already available 3.3 V and 1.8 V supply voltages so we can eliminate the need for
additional voltage regulators. Additionally, this display is compatible with the processor and exceeds the
simple requirements of a data concentrator application. The LCD interface is connected through 40-pin
FPC connector. The connection diagram of the LCD interface is shown in
(1)
The touch-screen controller is optional and can be added to take advantage of the touch-screen capability of the display, but
TSC2046 is not mounted in this design.
DESCRIPTION
MFG.
PART NUMBER
Display, TFT LCD, 240x320, 8/16-bit Parallel MPU
Interface
Newhaven Display
NHD-2.4-240320CF-CTXI#-F
Conn, FPC, Receptacle, 1x40, 0.5mm, 0.5A, Bottom
Contact, RA, SMD
Hirose Electric Co Ltd
FH40-50S-0.5SV
IC, TSC2046, Touch Screen Controller, TSSOP-16
Texas Instruments
TSC2046IPWR
(1)
Figure 8. LCD Interface From i.MX 6ULL Processor to Connector
2.2.6
JTAG Header
The JTAG connections match the requirements of the i.MX 6ULL for direct access to the processor for
programming and debugging.
DESCRIPTION
MFG.
PART NUMBER
Connector, Berg strip, 2x5, 1.27mm, 1A, ST, SMD
FCI
20021121-00010*4LF
