Analog Products

Renesas' broad portfolio of display processors include LCD and TFT processors and controllers, video format converters, and video decoders for both consumer and automotive applications.

Key Differences in TW884x Family

Product Input Types ADC
Input
Freq.
(MHz)
Max
Output
Resolution
Panel
Output
SoC
Output
Pkg
Type
Technical
Highlights
CVBS Comb
Filter
S-Video Analog
RGB/YPbPr
Digital
RGB/YCbCr
LVDS
Open LDI
TW8844 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
MIPI-CSI2
v1.1
156 Ld LQFP 1080p panel support + MIPI-CSI2 output path, improved frozen detection
TW8845 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
Pseudo
BT.656
156 Ld LQFP 1080p panel support + BT656 output path, improved frozen detection
TW8836 Yes* 4H Yes Yes (1080p) Yes
24-bit
Yes
1CH
148 WXGA/720p
1366x768
TTL/TCON
1CH LVDS
Pseudo
BT.656
128 Ld LQFP 720p panel support with LVDS I/O

*Differential Supported

Documentation

Title Type Date
PDF1.01 MB
White Paper

Videos & Training

TW8844 Full HD Automotive LCD Video Processor

Parking assistance is now considered a safety feature and will be required in American vehicles starting in 2018. Intersil's TW8844 is the industry's first full HD LCD video processor and features fast boot reliability, frozen detection, and automatic contrast adjustment.

Transcript

In the United States, the federal government has mandated that rear visibility technology be deployed as standard equipment on all new vehicles. As a result, the rear camera system is no longer considered a parking assistance feature, it's a safety feature.

Hi, I'm Jonpaul Jandu, Senior Marketing Manager for Intersil's Automotive Video Products. I'm here today to introduce our TW8844, the industry's first full HD LCD controller and video processor. The TW8844 is optimized to ensure rear camera reliability in the car system. Let me explain the demonstration we have here that's designed to show how that works.

First, we have a display that's showing what the camera from your rear camera system should be showing. This represents your user interface on your main display coming out of an SOC, typically. This is the actual display that would be in the center of your car. The challenges faced by OEMs today to be compliant with the new federal law that requires rear cameras in all new vehicles sold in the U.S. starting in 2018 is that the law says you should have video in less than two seconds from shifting to reverse gear. One of the challenges is that these SOCs are running complicated operating systems. Sometimes, it can take quite a while for them to boot up. The TW8844 can turn on, sync to a video source, and display that video in less than half a second, solving the fast boot reliability issue faced by car makers today.

In addition, a major concern by car companies is the reliability of that camera system coming on when you need it. The SOC is running a very complicated operating system and software stack. Sometimes, it can freeze up and may not show live video when you go into reverse gear. If you're stuck on a navi screen, the user will know, "Hey, something's wrong. I'd better be careful." But the real problem is, what if you shift into reverse, and you can see your backup camera and that freezes? You think your driveway's clear, and two kids have just run behind you. This is a major safety concern. The TW8844 is capable of monitoring the status of the SOC and the video that comes out of it. If we determine that it's frozen, we can simply bypass the SOC and wrap the camera video directly to the display. This happens nearly instantaneously, and if the SOC ever recovers, we can switch back to it.

Another great feature the TW8844 has, that's designed specifically for camera systems, is automatic contrast adjustment. With this feature, we can optimize the brightness and contrast levels of the camera image, dynamically, in real time, brightening up dark areas or bringing down the levels of bright area. So, if you have a really dark area next to a bright area, we can boost that dark area up without over-saturating the bright area.

So, as you can see, the TW8844 is a great way to solve the rear camera reliability problems faced by OEMs today. In addition, it's an ideal solution for any display system in the car, including rear seat entertainment and full-display mirrors.