embedded-processors-controllers

STM8S105C4

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This datasheet covers the STM8S105xx family of 8-bit microcontrollers from ST, including variants with 4 or 6 Kbytes Flash and S/C package options. The document defines the scope as a comprehensive technical reference for these devices. Key parameters include a supply voltage of 2.95V to 5.5V, up to 32Kbytes of Flash memory, and a 10-bit ADC. Communication capabilities feature SPI up to 8Mbit/s and I2C up to 400Kbit/s. Power management includes low-power modes and a flexible clock system with four master sources.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
quiescent current — 2.6 mA 3.2 mA fCPU = fMASTER = 16 MHz; HSE user ext. clock(16 MHz)
output current 20 mA — 20 mA
supply voltage range -300 mV — 6.5 V
operating temperature -40 °C — 85 °C Maximum power dissipation
clock frequency 0 Hz — 16 MHz
power dissipation — — 443 mW 44 and 48-pin devices, with output on eight standard ports, two high sink ports and two open drain ports simultaneously(4)
cpu speed — 16 MHz —
program memory size — 16.4 kB —
ram size — 2.05 kB —
io count — 38 —
adc resolution — 10 bit —
core size — 8 bit —
rise time — — 25 ns Capacitive load: C = 30 pF
data retention 20 year — — TRET = 55° C
program erase cycles 300 kcycle 1 Mcycle — TA = +125 °C
load capacitance — — 20 pF
03 — Alternatives

Closest matches to STM8S105C4

STM8S003F3 2.0× lower program memory size, 2.0× lower ram size, 1.9× lower power dissipation
STM8S903F3 2.4× lower power dissipation, 2.0× lower program memory size, 2.0× lower ram size
STM8S001J3M3 9.0× lower power dissipation, 2.0× lower program memory size, 2.0× lower ram size
PY32F002A 4.0× higher core size, 1.5× higher cpu speed, 1.5× higher ram size
STM32F030C4K6 14.9× lower quiescent current, 4.0× higher core size, 3.0× higher clock frequency
STM8L051F3P6 5.5× lower quiescent current, 2.4× lower power dissipation, 2.0× lower program memory size
STM32L010F4P6 4.0× higher core size, 2.0× higher clock frequency, 2.0× higher cpu speed
CH32V203C6T6 14.4× lower quiescent current, 9.0× higher cpu speed, 5.0× higher ram size
04 — FAQ

Frequently asked questions

What is the ADC resolution of the STM8S105C4?

The ADC resolution is 10 bit.

What is the maximum clock frequency of the STM8S105C4?

The maximum clock frequency is 16 MHz.

What is the core size of the STM8S105C4?

The core size is 8 bit.

What is the maximum CPU speed of the STM8S105C4?

The maximum CPU speed is 16 MHz.

What is the data retention time at TRET = 55° C?

The data retention time is 20 year at TRET = 55° C.

What is the total number of I/O pins for the STM8S105C4?

The STM8S105C4 has 38 I/O pins.

What is the load capacitance?

The load capacitance is 20 pF.

What is the operating temperature under maximum power dissipation?

The operating temperature is 85 °C.

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