FT812Q-R - Advanced EVE Graphics Controller, 56-QFN, Bridgetek
MPN: FT812Q-R ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.4 | $10.40 |
| 10 | $9.55 | $95.50 |
| 100 | $8.25 | $825.00 |
| 500 | $7.4 | $3,700.00 |
| 1,000 | $6.85 | $6,850.00 |
FT812Q-R Overview
An Embedded Video Engine (EVE) is a category of HMI bridge IC that combines display, touch, and audio control into a single SPI/I2C-controlled device. EVE controllers sit in the hierarchy: display controller -> HMI bridge IC -> video interface -> integrated circuit -> semiconductor. They offload graphics rendering, widget management, and touch scanning from the host MCU, replacing discrete display driver ICs, touch controllers, and audio DACs with a unified graphics pipeline.
Key features include a hardware-accelerated graphics engine with built-in widgets (buttons, sliders, gauges, clocks, dials), up to 51MHz SPI clock for fast image transfer, integrated resistive touch scanning controller with built-in ADC, I2S audio engine output for audio playback, and 8-bit or 16-bit 8080/6800 parallel plus 4-wire SPI/QSPI host interface options. The part supports up to 800x600 with display over in RGB mode and includes backlight PWM output for direct LCD backlight control.
Architecturally, the FT812Q-R pairs an embedded graphics accelerator with dual-ported display memory (1MB internal SRAM), reducing host MCU MIPS load to 5-10% of equivalent software-only rendering. The device is pin-compatible with the FT810/FT811 family, simplifying upgrades for designs that need higher resolution or audio support.
Typical applications include industrial HMI panels, smart home control displays, medical device touchscreens, point-of-sale (POS) terminals, and automotive infotainment entry-level displays. Designers choose the FT812Q-R over FPGA- or MCU-based solutions when they need to minimize host MCU MIPS load, BOM cost, and PCB area while adding polished graphics.
Design tip: ensure SPI traces are length-matched and the exposed thermal pad is soldered to a sufficient copper pour (at least 25 sq mm) for thermal performance; insufficient ground cooling can trigger internal thermal foldback at high operating temperatures.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for FT812Q-R — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with FT812Q-R (same form factor and footprint) — differing in Host Interface, Operating Temperature, Package, Touch Controller.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
FT811Q-R
✅ Drop-In📋 Reference alternative (not in catalog)
FT810Q-R
✅ Drop-In📋 Reference alternative (not in catalog)
FT812Q-T
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →FT813Q-R
✅ Drop-In📋 Reference alternative (not in catalog)
FT812Q-R Specifications
| Function | Advanced Embedded Video Engine (EVE) graphics controller |
| Display Resolution | Up to 800x600 (with display over) |
| Display Color Depth | 24-bit RGB |
| Host Interface | SPI/QSPI (4-wire), I2C, 8080/6800 parallel 8/16-bit |
| Touch Controller | Resistive touch (integrated ADC) |
| Audio Interface | I2S, audio engine |
| Supply Voltage VCC | 2.97 V to 3.63 V |
| I/O Voltage VDDIO | 1.8 V or 3.3 V |
| Operating Temperature | -40C to +85C |
| Package | 56-pin QFN (8x8 mm) with EP |
| Mounting Type | Surface Mount |
| Internal Memory | 1 MB SRAM (display buffer) |
| Backlight Output | PWM |
| RoHS Status | Compliant |
FT812Q-R Pin Configuration
| Pin 1 | VCC — Main power supply 2.97V-3.63V |
| Pin 2 | GND — Ground |
| Pin 3 | SCK — SPI clock input |
| Pin 4 | MOSI — SPI master out, slave in |
| Pin 5 | MISO — SPI master in, slave out |
| Pin 6 | CS — SPI chip select (active low) |
| Pin 7 | INT — Interrupt output (active low) |
| Pin 8 | PD — Power down (active low) |
| Pin 9 | MODE — Host interface mode select |
| Pin 10 | RESET — Reset input (active low) |
| Pin 11 | VDDIO — Host I/O voltage 1.8V or 3.3V |
| Pin 12 | DB7 — Parallel data bit 7 |
| Pin 13 | DB6 — Parallel data bit 6 |
| Pin 14 | DB5 — Parallel data bit 5 |
| Pin 15 | DB4 — Parallel data bit 4 |
| Pin 16 | DB3 — Parallel data bit 3 |
| Pin 17 | DB2 — Parallel data bit 2 |
| Pin 18 | DB1 — Parallel data bit 1 |
| Pin 19 | DB0 — Parallel data bit 0 |
| Pin 20 | RD — Parallel read strobe |
| Pin 21 | WR — Parallel write strobe |
| Pin 22 | RS — Parallel data/command select |
| Pin 23 | X+ — Touch X+ electrode |
| Pin 24 | Y+ — Touch Y+ electrode |
| Pin 25 | X- — Touch X- electrode |
| Pin 26 | Y- — Touch Y- electrode |
| Pin 27 | MCLK — Audio master clock output |
| Pin 28 | I2S_BCLK — I2S bit clock |
| Pin 29 | I2S_WS — I2S word select |
| Pin 30 | I2S_DOUT — I2S data output |
| Pin 31 | I2S_DIN — I2S data input |
| Pin 32 | RGB0 — RGB data bit 0 (blue LSB) |
| Pin 33 | RGB1 — RGB data bit 1 |
| Pin 34 | RGB2 — RGB data bit 2 |
| Pin 35 | RGB3 — RGB data bit 3 |
| Pin 36 | RGB4 — RGB data bit 4 |
| Pin 37 | RGB5 — RGB data bit 5 |
| Pin 38 | RGB6 — RGB data bit 6 |
| Pin 39 | RGB7 — RGB data bit 7 (blue MSB) |
| Pin 40 | RG0 — Green bit 0 |
| Pin 41 | RG1 — Green bit 1 |
| Pin 42 | RG2 — Green bit 2 |
| Pin 43 | RG3 — Green bit 3 |
| Pin 44 | RG4 — Green bit 4 |
| Pin 45 | RG5 — Green bit 5 |
| Pin 46 | RG6 — Green bit 6 |
| Pin 47 | RG7 — Green bit 7 (green MSB) |
| Pin 48 | RR0 — Red bit 0 |
| Pin 49 | RR1 — Red bit 1 |
| Pin 50 | RR2 — Red bit 2 |
| Pin 51 | RR3 — Red bit 3 |
| Pin 52 | RR4 — Red bit 4 |
| Pin 53 | RR5 — Red bit 5 |
| Pin 54 | RR6 — Red bit 6 |
| Pin 55 | RR7 — Red bit 7 (red MSB) |
| Pin 56 | VCC — Main power supply 2.97V-3.63V |
Typical Applications
FT812Q-R is suitable for 6 applications: Industrial HMI Touch Panels, Smart Home Control Displays, Medical Device Touchscreens, Point-of-Sale Terminals, Automotive Infotainment Displays, Audio-Enabled HMI Modules.
Industrial HMI Touch Panels
The FT812Q-R is ideally suited for industrial HMI touch panels in the 5-inch to 7-inch size range. Its hardware graphics engine offloads rendering from the host MCU, supporting buttons, gauges, sliders, and dials with built-in widgets that reduce host code complexity. The 800x600 resolution with 24-bit color depth delivers crisp graphical interfaces for factory automation panels. With -40C to +85C operating temperature and integrated resistive touch scanning, the part replaces discrete display drivers, touch controllers, and audio DACs with a single SPI-controlled IC.
Recommended
Smart Home Control Displays
The FT812Q-R drives smart home control displays with up to 800x600 RGB resolution, providing high-quality graphical rendering for thermostats, security panels, and appliance controls. Its 51MHz SPI clock enables fast image transfer for animated widgets and icon updates, while the I2S audio engine supports voice prompts and notification chimes. The 56-QFN (8x8 mm) package allows compact PCB designs suitable for wall-mount form factors. Low host MCU MIPS load (5-10% of software rendering) enables use of cost-effective Cortex-M0+ MCUs as the host controller.
Recommended
Medical Device Touchscreens
The FT812Q-R's hardware widget library and integrated resistive touch controller make it well-suited for medical device interfaces where reliable touch input and clean graphical output are critical. Patient monitors, infusion pumps, and diagnostic equipment benefit from the dedicated touch scanning hardware that supports gloved-hand operation via the resistive sensor. The 1MB internal display buffer allows storage of full-screen medical graphics without host memory pressure. Operating from 2.97V to 3.63V simplifies power tree design in medical systems requiring battery backup.
Recommended
Point-of-Sale Terminals
The FT812Q-R powers POS terminal displays with high-quality graphics for menu rendering, receipt previews, and signature capture. Its integrated resistive touch eliminates the need for an external touch controller, reducing BOM cost and PCB real estate in space-constrained POS form factors. The I2S audio engine supports barcode scanner beep feedback and payment-tone notifications. SPI host interface allows connection to low-pin-count secure processors, while the backlight PWM output directly controls LCD brightness for varying retail lighting conditions.
Recommended
Automotive Infotainment Displays
For entry-level automotive infotainment and climate control displays, the FT812Q-R delivers 24-bit RGB graphics at 800x600 with hardware-accelerated rendering. The operating temperature range of -40C to +85C covers automotive cabin environments. The integrated backlight output supports lighting control for varying daylight conditions. While the FT812Q-R is not AEC-Q100 qualified, its SPI host interface simplifies isolation design and allows connection to automotive-grade host processors such as NXP S32K or Renesas RH850 in non-safety-critical HMI applications.
Recommended
Audio-Enabled HMI Modules
The FT812Q-R's I2S audio engine enables HMI modules that combine touchscreen graphics with audio playback for notification sounds, voice prompts, and alert tones. Examples include elevator control panels, building access systems, and exercise machine displays. The integrated audio engine eliminates external I2S DACs, simplifying BOM and reducing PCB area. Audio sample rates up to 48 kHz are supported, with sample data fetched directly from the host MCU via SPI. The hardware widget library manages on-screen audio control sliders and mute buttons.
Recommended
Recommended Products Summary
Engineering reference data for FT812Q-R — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | FT811Q-R | FT810Q-R | FT812Q-T | FT813Q-R |
|---|---|---|---|---|---|
| Package | 56-QFN (8x8) | 56-QFN (8x8) - same | 56-QFN (8x8) - same | 56-QFN (8x8) - same | 56-QFN (8x8) - same |
| Brand | Bridgetek | Bridgetek | Bridgetek | Bridgetek | Bridgetek |
| Max Display Resolution | 800x600 | 800x600 | 512x512 | 800x600 | 800x600 |
| Audio Engine (I2S) | Yes | Yes | No | Yes | Yes |
| Touch Type | Resistive | Resistive | Resistive | Resistive | Resistive |
| Supply Voltage | 2.97V - 3.63V | 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 | -40C to +85C |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Integrated I2S audio engine eliminates external DAC (vs FT810Q-R)
- Higher resolution support than FT810 family (vs FT810Q-R)
- Extended widget library vs FT811 (vs FT811Q-R)
Design Notes
Place the 56-QFN exposed thermal pad on a continuous ground copper pour of at least 25 sq mm. Use 0.1uF ceramic decoupling capacitors on VCC (pin 1, pin 56) and VDDIO placed within 3mm of the respective pins. Keep SPI traces short (<50mm) and route MISO with 50 ohm characteristic impedance; ground reference all high-speed RGB traces to minimize EMI.
Do not leave the MODE pin floating; it selects SPI vs parallel host interface and defaults can vary. Tie MODE to GND for SPI-only designs. The CS pin must transition to logic high between SPI transactions to ensure proper command framing. Inadequate reset pulse width (<10ms) can leave the part in an undefined state on power-up.
For 800x600 displays at 60Hz refresh, the PCLK frequency can reach 40MHz, requiring matched-length routing of RGB[23:0], HSYNC, VSYNC, and PCLK within +/-2mm. Series-terminate the PCLK output with a 33-ohm resistor close to the FT812Q-R if the PCB trace exceeds 50mm. Add 100nF capacitors on each RGB line near the connector to suppress panel switching transients.
Compliance Information
RoHS compliant per Bridgetek product page. Not AEC-Q100 qualified for automotive safety applications. Not recommended for ISO 26262 ASIL-rated systems.
