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8-bit, ultra-low-power, touch-sensing MCUs with 16-Kbyte Flash and proximity detection

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Product overview


The STM8TL52x4 and STM8TL53x4 devices feature the enhanced STM8 CPU core providing increased processing power (up to 16 MIPS at 16 MHz) while maintaining the advantages of a CISC architecture with improved code density, a 24-bit linear addressing space and an optimized architecture for low power operations. It uses a ProxSense charge transfer capacitive acquisition method that is capable of near range proximity detection.

The family includes an integrated debug module with a hardware interface (SWIM) which allows non-intrusive in-application debugging and ultrafast Flash programming. All STM8TL52x4 and STM8TL53x4 microcontrollers feature low-power low-voltage single-supply program Flash memory.

The STM8TL52x4 and STM8TL53x4 devices are based on a generic set of state-of-the-art peripherals. The modular design of the peripheral set allows the same peripherals to be found in different ST microcontroller families including 32-bit families. This makes any transition to a different family very easy, and simplified even more by the use of a common set of development tools.

  • All features

    • Operating conditions
      • Operating power supply: 1.65 V to 3.6 V
      • Temperature range: –40 °C to 85 °C
    • Low power features
      • 4 low power modes: Wait, Active-halt with AWU (1 μA), Active-halt with ProxSense™ (10 μA with scan every 200 ms),Halt (0.4 μA)
      • Dynamic power consumption: 150 μA/MHz
      • Fast wakeup from Halt mode: 4.7 μs
      • Ultra-low leakage per I/O: 50 nA
    • Advanced STM8 Core
      • Harvard architecture with 3-stage pipeline
      • Max freq.16 MHz,16 CISC MIPS peak
    • Memories
      • Up to 16 Kbyte of Flash program including up to 2 Kbyte of data EEPROM
      • Error correction code (ECC)
      • Flexible write and read protection modes
      • In-application and in-circuit programming
      • Data EEPROM capability
      • 4 Kbyte of static RAM
    • Clock management
      • Internal 16 MHz factory-trimmed RC
      • Internal 38 kHz low consumption RC driving both the IWDG and the AWU
    • Reset and supply management
      • Ultra-low-power, ultra safe power-on reset/ power-down reset
    • Interrupt management
      • Nested interrupt controller with software priority control
      • Up to 22 external interrupt sources
    • I/Os
      • Up to 23 with 22 mappable on external interrupt vectors
      • I/Os with programmable input pull-ups, high sink/source capability
    • ProxSense™ patented acquisition technology with up to 300 touch sensing channels (20 receiver/transmitter channels and 15 transmitter channels) supporting projected capacitive acquisition method suitable for proximity detection.
    • Timers
      • Two 16-bit general purpose timers (TIM2 and TIM3) with up and down counter and two channels (used as IC, OC, PWM)
      • One 8-bit timer (TIM4) with 7-bit prescaler
      • Independent watchdog
      • Window watchdog
      • Auto-wakeup unit
      • Beeper timer with 1, 2 or 4 kHz frequencies
    • Communication interfaces
      • SPI synchronous serial interface
      • Fast I2C Multimaster/slave 400 kHz
      • USART with fractional baud rate generator
    • Development support
      • Hardware single wire interface module (SWIM)
      • In-circuit emulation (ICE)

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STMicroelectronics - STM8TL52G4

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
UFQFPN 28 4x4x0.55 mm Industrial Ecopack2



UFQFPN 28 4x4x0.55 mm

Material Declaration**:


Marketing Status



UFQFPN 28 4x4x0.55 mm



RoHS Compliance Grade


(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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