FT812Q-T - EVE2 Video Controller IC, SPI, 56-QFN | Bridgetek
N.º da peça: FT812Q-T ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.68 | $7,68 |
| 10 | $7.2 | $72,00 |
| 100 | $6.5 | $650,00 |
| 500 | $5.85 | $2.925,00 |
| 1.000 | $5.4 | $5.400,00 |
| 3.000 | $4.95 | $14.850,00 |
FT812Q-T Visão geral
An Embedded Video Engine (EVE) is a system-on-chip graphics controller that offloads rendering, widget composition, audio playback, and touch scanning from the host MCU. EVE controllers occupy a unique position in the embedded display hierarchy - sitting between simple character LCDs and full graphics SoCs - delivering high-quality HMIs without requiring a high-performance host processor or external frame buffer memory.
Key features of the FT812Q-T include a built-in graphics engine supporting jpeg decoding and ASTC texture compression, a 1 MByte graphics RAM, integrated PWM audio output, and a resistive touch screen controller with hardware scanning. It supports display resolutions up to 1024x768 (HVGA+) via its programmable 24-bit RGB interface, with display sizes configurable up to 512x512 for the FT81x family. The device operates from a single 3.3V supply (2.97V to 3.63V) and is specified for the -40C to +85C industrial temperature range.
From an architecture standpoint, the FT812Q-T combines an embedded graphics accelerator, a configurable display controller, audio DAC with class-D amplifier interface, and a touch engine into a single BGA-equivalent VQFN package. The 56-QFN-EP exposed pad provides thermal relief and a low-impedance ground return. Communication occurs through SPI at speeds up to 100 Mbps, allowing the host MCU to issue high-level display-list commands rather than pixel-by-pixel updates, dramatically reducing MCU firmware complexity and SPI bus traffic.
Typical applications include point-of-sale terminals, industrial control panels, medical device HMIs, security systems, teleconferencing equipment, smart home control panels, and portable instrumentation displays. The wide operating voltage and temperature ranges suit industrial, medical, and security applications requiring reliable operation in harsh environments.
When designing with the FT812Q-T, pay attention to PCB layout: route SPI traces as short 50-ohm impedance-controlled lines, place the 0.1uF decoupling capacitor within 3mm of the supply pin, and solder the exposed pad to a continuous ground plane for thermal dissipation and low-noise digital return paths. The EVE2 command protocol requires the host MCU firmware library from Bridgetek for proper display-list construction.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet - including a 5-alternative comparison matrix from Bridgetek's FT81x family and cross-brand VQFN-56 competitors, plus an honest application-by-application fit analysis.
Alternativas drop-in para FT812Q-T — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com FT812Q-T (mesmo formato e footprint) — diferindo em Host Interface, Operating Temperature, Package, Touch Controller.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
FT810Q-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
FT811Q-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
FT813Q-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
FT812Q-T Especificações
| Product Type | Embedded Video Engine (EVE2) Controller |
| Family | FT81x (EVE2) |
| Host Interface | SPI (up to 100 Mbps) |
| Display Interface | 24-bit RGB parallel |
| Maximum Resolution | 1024 x 768 (HVGA+) |
| Touch Controller | Resistive touch (built-in hardware scanning) |
| Graphics RAM | 1 MByte |
| Audio Output | PWM audio output / Class-D amplifier interface |
| Tensão de alimentação | 2.97 V to 3.63 V (3.3 V typical) |
| I/O Voltage | 1.8 V to 3.3 V |
| Temperatura de operação | -40 C to +85 C |
| Encapsulamento | VQFN-56-EP (8x8 mm) |
| Package Type | VQFN-EP (Very-thin QFN with Exposed Pad) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Nível MSL | 3 (168 hours) |
Configuração de pinos do FT812Q-T
| Pino 1 | SCK — SPI clock input from host MCU |
| Pino 2 | MISO — SPI master-in-slave-out (data to host) |
| Pino 3 | MOSI — SPI master-out-slave-in (data from host) |
| Pino 4 | CS — SPI chip-select (active low) |
| Pino 5 | INT — Interrupt output to host |
| Pino 6 | PD — Power-down input |
| Pino 7 | RST — Hardware reset (active low) |
| Pino 8 | VCC — 3.3V core supply |
| Pino 9 | GND — Ground |
| Pino 10 | VCCIO — I/O supply voltage (1.8V-3.3V) |
| Pino 11 | GPIO0 — General-purpose I/O |
| Pino 12 | GPIO1 — General-purpose I/O |
| Pino 13 | GPIO2 — General-purpose I/O |
| Pino 14 | GPIO3 — General-purpose I/O / WAKE |
| Pino 15 | AUDIO — PWM audio output to amplifier |
| Pino 16 | X+ — Resistive touch X+ input |
| Pino 17 | Y+ — Resistive touch Y+ input |
| Pino 18 | X- — Resistive touch X- input |
| Pino 19 | Y- — Resistive touch Y- input |
| Pino 20 | DISP — Display enable / backlight control |
| Pino 21 | HSYNC — Horizontal sync to TFT display |
| Pino 22 | VSYNC — Vertical sync to TFT display |
| Pino 23 | DE — Data enable to TFT display |
| Pino 24 | PCLK — Pixel clock to TFT display |
| Pino 25 | RGB0 — RGB data bit 0 (blue LSB) |
| Pino 26 | RGB1 — RGB data bit 1 |
| Pino 27 | RGB2 — RGB data bit 2 |
| Pino 28 | RGB3 — RGB data bit 3 |
| Pino 29 | RGB4 — RGB data bit 4 |
| Pino 30 | RGB5 — RGB data bit 5 |
| Pino 31 | RGB6 — RGB data bit 6 |
| Pino 32 | RGB7 — RGB data bit 7 (blue MSB) |
| Pino 33 | GND — Ground |
| Pino 34 | RGB8 — RGB data bit 8 (green LSB) |
| Pino 35 | RGB9 — RGB data bit 9 |
| Pino 36 | RGB10 — RGB data bit 10 |
| Pino 37 | RGB11 — RGB data bit 11 |
| Pino 38 | RGB12 — RGB data bit 12 |
| Pino 39 | RGB13 — RGB data bit 13 |
| Pino 40 | RGB14 — RGB data bit 14 |
| Pino 41 | RGB15 — RGB data bit 15 (green MSB) |
| Pino 42 | GND — Ground |
| Pino 43 | RGB16 — RGB data bit 16 (red LSB) |
| Pino 44 | RGB17 — RGB data bit 17 |
| Pino 45 | RGB18 — RGB data bit 18 |
| Pino 46 | RGB19 — RGB data bit 19 |
| Pino 47 | RGB20 — RGB data bit 20 |
| Pino 48 | RGB21 — RGB data bit 21 |
| Pino 49 | RGB22 — RGB data bit 22 |
| Pino 50 | RGB23 — RGB data bit 23 (red MSB) |
| Pino 51 | NC — Not connected (per datasheet) |
| Pino 52 | NC — Not connected (per datasheet) |
| Pino 53 | NC — Not connected (per datasheet) |
| Pino 54 | TEST — Factory test pin (leave floating per datasheet) |
| Pino 55 | GND — Ground |
| Pino 56 | EP — Exposed pad - thermal/ground connection (must be soldered) |
Aplicações típicas
FT812Q-T é adequado para 7 aplicaçãos: Point-of-Sale Terminals, Industrial Control Panels, Medical Device HMIs, Security Systems, Teleconferencing Equipment, Smart Home Control Panels, Portable Instrumentation Displays.
Point-of-Sale Terminals
The FT812Q-T's 1024x768 max resolution, 24-bit RGB interface, and 1 MByte internal graphics RAM make it a strong fit for color TFT displays in POS terminals. Per the FT81x datasheet, the integrated PWM audio output drives speaker buzzers for transaction confirmation tones without an external audio DAC. The 3.3V supply and -40C to +85C industrial range suit retail back-office and kitchen-display environments. Its resistive touch controller eliminates the need for a separate touch IC, reducing BOM cost in price-sensitive POS designs. Recommended companion MPNs: STM32F407VG (host MCU), ER-TFT050-2 (5-inch display).
Recomendado
Industrial Control Panels
Industrial HMIs benefit from the FT812Q-T's wide 2.97V-3.63V supply tolerance and -40C to +85C operating range. The 24-bit RGB bus drives full-color TFT panels used for machine status displays, while the built-in graphics engine renders gauges, trends, and alarms without taxing the host MCU. Per the Bridgetek datasheet, the resistive touch interface works with gloved-finger operation common in factory environments. The 56-QFN-EP package is suitable for reflow soldering on standard FR-4 industrial PCBs. Recommended companion MPNs: STM32H743ZI (high-performance host MCU), FT232HL-REEL (USB-SPI bridge for firmware updates).
Recomendado
Medical Device HMIs
Medical equipment displays - infusion pumps, patient monitors, diagnostic analyzers - use the FT812Q-T for its high-resolution graphics and reliable resistive touch sensing. Per the Bridgetek FT81x documentation, the integrated audio engine supports alarm-tone generation critical for patient-safety notifications. The 3.3V single-supply operation simplifies medical device power trees, and the 56-QFN-EP footprint suits compact handheld form factors. Designers must still verify IEC 60601-1 EMI/EMC compliance at the system level; the FT812Q-T itself is not a medical-grade qualified component. Recommended companion MPNs: MSP432P401R (low-power host MCU), CY8C4127AXI-S443 (PSoC auxiliary touch UI).
Recomendado
Security Systems
Security keypads, access-control panels, and alarm-system displays use the FT812Q-T for its TFT driving capability and integrated touch sensing. Per the Bridgetek product page, the FT81x family is widely adopted in security HMIs for icon-based status displays. The hardware JPEG decoder accelerates camera-preview overlays, and the audio PWM output drives sirens or voice prompts. The -40C to +85C industrial temperature range supports outdoor panel installations in unconditioned enclosures. Recommended companion MPNs: STM32F407VG (host MCU), DRV110APWR (siren driver IC).
Recomendado
Teleconferencing Equipment
Conference-room touch panels and meeting-room controllers use the FT812Q-T to drive 7-to-10-inch color TFT displays showing room calendars, room status, and meeting controls. The 24-bit RGB interface supports high-quality graphics with smooth gradients for brand-aligned UI. Per the Bridgetek FT81x documentation, the integrated audio engine handles touch-click feedback tones and meeting-start chimes. The 56-QFN-EP package is small enough for in-wall touch panel enclosures. Recommended companion MPNs: ESP32-WROOM-32 (Wi-Fi host MCU for calendar sync), FT232HL-REEL (USB programming/debug bridge).
Recomendado
Smart Home Control Panels
Wall-mounted smart-home touch panels use the FT812Q-T for their high-resolution displays and integrated touch control. Per the Bridgetek product literature, the FT81x family enables premium UI design with smooth animations and icon-rich screens. The 3.3V single supply simplifies mains-powered wall-panel designs with AC-DC converters. The 1 MByte internal graphics RAM stores UI assets without external flash, reducing BOM cost for consumer products. Recommended companion MPNs: STM32H743ZI (host MCU), DRV8873HPWPR (relay/load driver).
Recomendado
Portable Instrumentation Displays
Handheld oscilloscopes, multimeters, and portable test equipment use the FT812Q-T for their color TFT displays and touch-driven UI. Per the Bridgetek FT81x datasheet, the device's low-power design and 3.3V supply suit battery-powered instruments. The built-in graphics engine renders waveforms, FFT plots, and measurement overlays efficiently, offloading the host MCU. The industrial temperature range supports field-use conditions. Recommended companion MPNs: STM32F407VG (host MCU), ADS131A04 (precision ADC companion).
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para FT812Q-T — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | FT810Q-T | FT811Q-T | FT813Q-T |
|---|---|---|---|---|
| Brand | Bridgetek | Bridgetek | Bridgetek | Bridgetek |
| Package | VQFN-56-EP (8x8 mm) | VQFN-56-EP (8x8 mm) - same | VQFN-56-EP (8x8 mm) - same | VQFN-56-EP (8x8 mm) - same |
| Touch Type | Resistive | Capacitive | Capacitive | Capacitive |
| Max Display Resolution | 512 x 512 (FT812) | 512 x 512 | 512 x 512 | 1024 x 768 (HVGA+) |
| Host Interface | SPI up to 100 Mbps | SPI up to 100 Mbps | SPI up to 100 Mbps | SPI up to 100 Mbps |
| Display Interface | 24-bit RGB parallel | 24-bit RGB parallel | 24-bit RGB parallel | 24-bit RGB parallel |
| Graphics RAM | 1 MByte | 1 MByte | 1 MByte | 1 MByte |
| Audio Output | PWM / Class-D interface | PWM / Class-D interface | PWM / Class-D interface | PWM / Class-D interface |
| Supply Voltage | 2.97V - 3.63V | 2.97V - 3.63V | 2.97V - 3.63V | 2.97V - 3.63V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principais diferenciais
- Integrated graphics engine eliminates host MCU pixel processing (vs FT810Q-T)
- Resistive touch variant suited for industrial glove operation (vs FT811Q-T)
- Higher display resolution than FT810/FT811 (vs FT813Q-T)
Notas de projeto
Route the SPI bus (SCK, MISO, MOSI, CS) as short matched-length traces in a 50-ohm impedance-controlled region. Place a 0.1uF ceramic decoupling capacitor within 3mm of the VCC pin and a 1uF bulk capacitor within 10mm. The exposed pad (EP) MUST be soldered to a continuous ground plane with at least 4 thermal vias for heat dissipation and low-impedance digital return paths. Use a 4-layer PCB with dedicated ground and power planes to minimize EMI on the parallel RGB bus, which switches at pixel-clock rates up to 50 MHz.
The FT812Q-T requires a clean 3.3V supply within 2.97V-3.63V. Estimated current draw is 60-80 mA during active graphics rendering plus additional current for RGB bus switching. Add a ferrite bead in series with the 3.3V supply to isolate digital switching noise from sensitive analog circuitry in the host system. Place a 10uF tantalum or ceramic bulk capacitor near the IC, in addition to the 0.1uF high-frequency decoupling, to handle transient current demands during display refresh.
Do not omit the host MCU firmware library from Bridgetek - the EVE2 command protocol requires the official FT81x library for proper display-list construction. The reset pin (RST) requires a 10k pull-up to VCC and a 1nF capacitor to ground for proper power-on-reset behavior per the datasheet. The TEST pin (pin 54) MUST be left floating - do not connect to ground or VCC. Touch panel calibration values must be stored in non-volatile memory on the host MCU side; the FT812Q-T does not retain calibration through power cycles.
The 24-bit RGB bus and pixel clock can generate significant EMI above 30 MHz. Use controlled-impedance routing (typically 50 ohms single-ended) with series termination resistors (22-33 ohms) on the pixel clock and high-order RGB lines if the display is more than 50mm away. Keep the RGB bus away from analog-sensitive traces. Consider adding a common-mode choke on the display flex cable for EMI compliance in industrial applications requiring CE/FCC certification.
Informações de conformidade
RoHS compliant per Bridgetek product page and JLCPCB listing. Not AEC-Q100 qualified - the FT81x family targets industrial/consumer HMI, not automotive. Halogen-free status not explicitly stated in the verified data - set to 'unknown' per data authenticity rules.
