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STMicroelectronics STM8TL53C4U6 — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM8TL53C4U6 8-bit MCU, 16 MHz, 16 KB Flash, ProxSense

MPNSTM8TL53C4U6
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STMicroelectronics STM8TL53C4U6, STM8T series 8-bit MCU, STM8 core, 16 MHz, 16 KB Flash, 4K x 8 RAM, 2K x 8 EEPROM, 23 I/O, I²C/SPI/UART, ProxSense, PWM, WDT, 1.65V–3.6V, -40°C to 85°C, 48-UFQFN exposed pad.

$2.6762Ref. price · indicative, final on quote
STMicroelectronics STM8TL53C4U6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM8TL53C4U6 specifications
ParameterValue
SeriesSTM8T
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.65V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed16MHz
PackageTray
RAM size4K x 8
Core size8-Bit
EEPROM size2K x 8
PeripheralsPOR, ProxSense, PWM, WDT
ConnectivityI²C, SPI, UART/USART
Number of i (O)23
Core processorSTM8
Case48-UFQFN Exposed Pad
Program memory size16KB (16K x 8)

Product details

STM8TL53C4U6 — 8-bit MCU with integrated ProxSense touch

The STM8TL53C4U6 is an 8-bit microcontroller from STMicroelectronics' STM8T series, built around the STM8 core running at 16 MHz.

This saves board area, reduces BOM count, and simplifies firmware development — the MCU handles both application logic and touch sensing in a single chip. For designs requiring capacitive buttons, sliders, or proximity wake-up, this peripheral is the key differentiator versus a general-purpose 8-bit MCU without touch hardware.

Package and footprint — 48-UFQFN with exposed pad

The 23 I/O lines are sufficient for small touch panels or sensor aggregation. MSL level should be verified from the latest ST packaging data.

Frequently asked questions

What is the core processor of STM8TL53C4U6?

The core processor is the STM8, an 8-bit architecture running at up to 16 MHz.

How many I/O pins does STM8TL53C4U6 have?

The STM8TL53C4U6 provides 23 general-purpose I/O pins.