3.5" HDMI TFT LCD for Raspberry Pi (Соединенные Штаты Америки - Тендер #43104544)

3.5" HDMI TFT LCD current specifications are below. Looking for an equivalent.
RTD2660H - Its main performer here - Realtek RTD2660H is a "Flat panel controller" - it support a lot of video inputs (HDMI/DVI/VGA/S-VIDEO(composite)) and have two video outputs: LVDS and TTL, it have audio decoder, DDC, MCU core and even OSD - hmmm... this looks like it could be installed on those boards-adapters HDMI/DVI/VGA to LVDS that are for ~14USD on aliexpress... Anyway, in KeDei it have only HDMI input used, as for output Im not sure, but it might have very likely used a TTL output mode.
25X40 - Winbond W25X40CLNIG - 4Mbit SPI NOR-Flash memory - there is probably a firmware for MCU inside RTD to init display & show "KeDei logo" :)
CS4334K - Cirrus Logic CS4334 (Its been a while since I saw this name...) - Its a 24bit 96kHz stereo D/A converter with 16..24bit I2S interface.
XPT2046 - Shenzhen Xptek Technology XPT2046 - a resistive touch panel controller with SPI interface - no need for more comment :)
4103 - PowerTech PT4103 - its a tiny (chassis SOT-23-6) step-up dc/dc white led driver - next one popular chip
AMS1117-x.x (where "x.x" is voltage) - are voltage regulators for RTD & display panel - the 1.8V looks ok, but marking on 3.3V version looks soo strange, that I would say its some clone of AMS1117...
Display connector - Its a fine-pitch (0.3mm) connector with 39 pins :) - Yeah, I counted them :P
Backlight switch - very demanded function in those small displays, in this one we dont break only backlight led circuit but we switch off whole backlight driver (turn off power to PT4103),
Micro Usb - Only for powering the display & Pi, you should use only one: On RPi or on the display, but the one on display is not protected by fuse and connects directly to RPi 5V bus
Touch panel - not much to comment but I should mention that the FPC cable from touch panel is directly soldered to PCB, this is a reason of the piece of tape on display... :twisted:
Raspberry Pi GPIO connector - Its used to power the display module (or power the Pi - depends where you plug the power cable: to the Pi or to the display), and for touch panel controller interface - the XPT2046 is connected to SPI and use CS0 for chip select.
The Display - its a 320x480 TFT panel with 18bit RGB I/F, part number (in my module): S90329A-DT035HV , very likely manufactured by Yunlea . Googling for DT035HV reveled a link to very similar (in size and FPC pinout) display: S90456B-DT035HV - difference is only on length of FPC connector and its distance from display edge. As for viewing angles, they are not so bad for a normal TFT (or at least for me :D ).

Country: United States

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