STMicroelectronics STM8 User Manual

Shown below are the SPL functions associated with the GPIO module.
Observe the code below. This is the power of the ST’s SPL. The code is written with no traditional
register access. Everything here has a meaningful nomenclature, just like regular naming/words of the
reference manual/comments. There shouldn’t be any issue understanding the code. The code is
almost Arduino-like. Here we are polling an input pin’s state to alter the blink rate of a LED.

STMicroelectronics STM8 Specifications

General

ADC Resolution	10-bit
Core	STM8
Maximum Clock Frequency	Up to 24 MHz
Flash Memory	Up to 128 KB
RAM	Up to 6 KB
EEPROM	Up to 2 KB
Operating Voltage	2.95 V to 5.5 V
Operating Temperature	-40°C to +85°C or +125°C
Communication Interfaces	UART, SPI, I2C
Package Options	LQFP, TSSOP, UFQFPN, SO

Summary

Hardware Tools

Software Tools

Creating a New Code Project

Uploading Code

General Purpose Input Output (GPIO)

Clock System (CLK)

External Interrupt (EXTI)

Alphanumerical LCD

Analog-to-Digital Converter (ADC)

Analog Watchdog (AWD)

Independent Watchdog (IWDG)

Window Watchdog (WWDG)

Time Base Generation (TIM2)

Timer Interrupt (TIM4)

General Purpose Pulse Width Modulation (TIM2 PWM)

Advanced Pulse Width Modulation (TIM1 PWM)

Timer Input Capture (TIM1 & TIM2)

Serial Communication (UART)

Serial Peripheral Interface (SPI)

Inter-Integrated Circuit (I2C)

Peripheral Clock Configurations

Unlocking a Locked STM8 Chip