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3.5 Inch 320x480 TFT LCD Module RGB + MCU + SPI Interface with CTP - VXT350QHI-26C

The VXT350QHI-26C is a 3.5-inch 320 x 480 portrait TFT LCD module with a capacitive touch panel, driven by ILI9488, and what sets it apart is that three interface families sit on one 50-pin FPC - 24-bit RGB, MCU parallel in 8, 9, 16, 18 or 24-bit form, and SPI - selected by three IM strap pins. The touch is a mutual-capacitance sensor on its own separate 20-pin FPC carrying seven TX and five RX lines. An active area of 48.96 x 73.44 mm whose 2:3 aspect matches the dot matrix precisely, and a diagonal of 88.265 mm, or 3.4750 inches. Contrast is 700 typical, all four viewing angles are 80 degrees with an ALL viewing direction so the module mounts any way round, uniformity carries a floor of 75 per cent, NTSC is 69 typical, and all eight CIE coordinates are published. The backlight is six LEDs in parallel at 120 mA with a forward voltage from 2.7 to 3.3 V, so a 3.3 V rail leaves no headroom and the current is high for a parallel array.

Model:VXT350QHI-26C

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Product Description

General Information

Item	Value
Model	VXT350QHI-26C, VER.0
LCD type	TFT — TRANSMISSIVE
Composition	Panel, driver IC, FPC, back light and CTP unit — touch is included
Colours	16.7M
Viewing direction	ALL — confirmed by four identical 80° angles and by U/L/D/R = 80/80/80/80
Operating temperature	−20 to +70 °C
Storage temperature	−30 to +80 °C — properly wider
Module size	54.66 × 82.94 × 3.90 mm — Note 2: with CTP, without FPC and solder
Active area	48.96 × 73.44 mm — 35.96 cm² — portrait
Resolution	320 × 480 — native portrait
Controller	ILI9488
Interface	MCU / RGB / SPI — three families, strap-selected
CTP connector	Separate 20-pin FPC — TX1–7, RX1–5, 4 grounds, 4 NC
CTP FPC	20-pin, 0.5 mm pitch, 9.5 ± 0.05 span, 10.5 ± 0.1 W
Supply	VCI 2.5 / 2.8 / 3.3 V (analog); IOVCC 1.65 / 1.8 / 3.3 V (logic)
Brightness	300 cd/m² typical
Contrast	700 typical
Response	Tr + Tf 30 ms typical — one row, no minimum, no maximum
Viewing angle	80° at all four directions — typical only
Uniformity	75% min / 80% typ
CIE	All eight — W 0.315/0.370, R 0.660/0.325, G 0.277/0.568, B 0.145/0.072
NTSC	69 % typical — highest gamut of any 3.5-inch panel here
Backlight	6 LEDs — 6P, in parallel — confirmed by the drawing
Backlight voltage	2.7 / 3.0 / 3.3 V at 120 mA
Backlight current	120 mA total — 20 mA per LED
Backlight power	0.36 W (derived); 0.396 W at max Vf

Where It Gets Used

Smart home and building control panels — 320 × 480 portrait with capacitive touch, 80° viewing in every direction so it mounts at any height and angle.
Video door phone and intercom indoor units — portrait touch, and a 2.85 mm side bezel keeps the panel compact on a wall plate.
Handheld industrial terminals and handheld computers — MCU or SPI, 300 KB frame buffer, TE for tear-free updates.
Portable test and measurement instruments — 700:1 contrast, all eight CIE coordinates, 0.36 W of backlight.
Industrial HMI and machine sub-panels — three interface families on one part number, selected by straps.
Access control and door panels — a keypad or directory view with touch.
Portable medical and laboratory devices — small frames, low-voltage logic, thin module.
Point-of-sale and handheld payment terminals.
Kiosk and vending sub-displays.
Retrofits of existing 3.5-inch portrait equipment — one of the most widely deployed small-panel formats still in service.