T-Display SF32 get it now

Overview

T-Display SF32 is a development board based on SiFli's SF32LB52X ultra-low-power AIoT MCU. Built for smart wearables, smart home, industrial sensing, and IoT applications, it integrates a 2.16" AMOLED display, SX1262 LoRa, L76K GNSS, BHI260AP 9-axis IMU, BME280 temperature/humidity sensor, 24-bit audio, an 8×8 matrix keyboard interface, and USB PD fast charging. The dual-core Arm Cortex-M33 big.LITTLE architecture (HCPU @ 192 MHz + LCPU @ 24 MHz) with an integrated ePicasso 2.5D graphics engine enables rich UI with very low power consumption.

Quick Start

SDK Setup

Windows

Follow the SlFli-SDK-Lilygo Windows Installation Guide.

Linux / macOS

Follow the SIFLI-SDK Unix Installation Guide.

Build and Flash (PowerShell)

cd SIFLI\T-Display-SF32\examples\rt_os\rt_driver\project
scons --board=t-display-sf32_hcpu -j8
build_t-display-sf32_hcpu\uart_download.bat

After the build completes, run uart_download.bat and enter the device COM port number to flash.

Note: If the device is not recognized, install the C++ driver from tools/VisualCppRedist_54_Setup.7z.

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Key Features

• SF32LB52X dual-core Arm Cortex-M33 big.LITTLE: HCPU @ 192 MHz (787 CoreMark) + LCPU @ 24 MHz
• ePicasso 2.5D high-performance graphics engine
• 2.16" AMOLED display (CO5300) with CST9220 capacitive touch
• Dual-mode Bluetooth 5.3 (BLE 5.3 + Classic BT) with BLE Audio, RX sensitivity −100 dBm
• SX1262 LoRa module (433 / 868 / 915 MHz, low power)
• L76K multi-constellation GNSS (GPS, GLONASS, BeiDou, QZSS)
• BHI260AP 9-axis IMU (accelerometer + gyroscope + magnetometer)
• BME280 temperature & humidity sensor
• 24-bit audio ADC/DAC with Bluetooth audio streaming, 3.5 mm jack
• AW86224 vibration motor, VSMY14940 IR transmitter
• TCA8418 + AW21009 8×8 matrix keyboard interface
• SGM41562B USB PD fast-charging battery management
• MicroSD slot (SDHC/SDXC)
• 16 MB Flash + 8 MB PSRAM
• 45 GPIO, I2C ×4, SPI ×2, UART, JTAG/SWD, Type-C USB

Specifications

Parameter	Value
SOC	SF32LB52X
Architecture	Arm Cortex-M33 STAR-MC1 big.LITTLE
HCPU	192 MHz, 787 CoreMark
LCPU	24 MHz
SRAM	576 kB (512 kB + 64 kB)
Flash	16 MB
PSRAM	8 MB
Display	2.16" AMOLED (CO5300)
Touch	CST9220 capacitive
Bluetooth	BLE 5.3 + Classic BT, BLE Audio
LoRa	SX1262, 433 / 868 / 915 MHz
GNSS	L76K (GPS / GLONASS / BeiDou / QZSS)
IMU	BHI260AP, 9-axis
Temp / Humidity	BME280
Audio	24-bit ADC/DAC, 3.5 mm jack
Charging	SGM41562B, USB PD fast charging
Storage	MicroSD (SDHC/SDXC)
USB	Type-C
GPIO	45 pins
Operating Voltage	3.2 V – 4.7 V

Pin Diagram

Dimensions

Schematic

• T-Display SF32 V1.0 Schematic (2026-04-02)
• T-Display SF32 V1.0 Schematic (2026-05-11)
• T-SF32-Keyboard V1.0 Schematic

Datasheet

• SF32LB52X Chip Spec
• SF32LB52X User Manual
• L76K GNSS Datasheet
• BME280 Datasheet
• SGM41562B Datasheet
• AW86224 Vibration Motor Datasheet
• AW21009 LED Driver Datasheet
• XL9555 IO Expander Datasheet

Software Libraries

• T-Display-SF32 GitHub Repository
• LILYGO SiFli SDK
• SIFLI Official SDK Docs
• RT-Thread Documentation

FAQ

• Q. BLE is not working after menuconfig setup. A. Add lcpu_general_ble_img to SConscript and AddLCPU(...) to SConstruct. The LCPU handles BLE initialization.

• Q. Impeller flashing keeps failing. A. Use a Type-C USB cable, verify the COM port in Device Manager, and install the C++ driver from tools/VisualCppRedist_54_Setup.7z.

• Q. Device won't power on via USB after shutdown. A. The factory firmware enters deep low-power mode on shutdown — only a physical button press can wake it. Charging still works normally while powered off.

Changelog

Version	Date	Notes
V1.0	—	Initial release