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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM8T
Packaging Tray | NULL
Core Processor STM8
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, SPI, UART/USART
Peripherals POR, ProxSense, PWM, WDT
Number of I/O 23
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
EEPROM Size 2K x 8
RAM Size 4K x 8
Voltage - Supply (Vcc/Vdd) 1.65V ~ 3.6V
Data Converters -
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-UFQFPN (7x7)
Package / Case 48-UFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STMicroelectronics STM8TL53C4U6 is an 8-bit STM8 microcontroller running at 16MHz with 16KB flash and 4KB SRAM. It integrates ProxSense capacitive sensing, PWM, and WDT in a 48-UFQFN package. Operating from 1.65V to 3.6V, it is optimized for low-power touch and proximity applications.

  • Integrated ProxSense eliminates external touch ICs, reducing cost and PCB area.
  • Ultra-low voltage (1.65V) enables operation from a single alkaline cell.
  • Compact 48-UFQFN package suits miniaturized wearable designs.
  • Low-power STM8 core extends battery life in continuous sensing modes.

Wearable Fitness Trackers

Ultra-low 1.65V operation and ProxSense enable touch buttons and proximity wake-up, extending battery life in wrist-worn devices.

Smart Home Light Switches

ProxSense detects hand proximity to activate backlighting before touch, improving user experience in dim environments.

Portable Audio Players

16KB flash and 4KB RAM handle audio control logic, while PWM drives LED indicators and WDT ensures stability.

IoT Sensor Nodes

Low power consumption and small 48-UFQFN package fit into space-constrained wireless sensor modules.

Medical Wearable Patches

1.65V minimum voltage supports single-cell battery operation, and ProxSense allows non-contact patient monitoring.

Consumer Electronics Remote Controls

ProxSense wakes the device when hand approaches, reducing standby power and improving battery life.

Q: What is the core?
A: STM8 8-bit core at 16MHz.
Q: Does it have proximity sensing?
A: Yes, integrated ProxSense for touch/proximity.
Q: What is the supply voltage?
A: 1.65V to 3.6V.
Q: What package is used?
A: 48-UFQFN with exposed pad.
Base Product Number : STM8TL53C4U6
16KB flash 16MHz 48-UFQFN 8-bit MCU low-power ProxSense STM8 STMicroelectronics touch
Q: What is the core?
A: STM8 8-bit core at 16MHz.
Q: Does it have proximity sensing?
A: Yes, integrated ProxSense for touch/proximity.
Q: What is the supply voltage?
A: 1.65V to 3.6V.
Q: What package is used?
A: 48-UFQFN with exposed pad.