Datasheet
STM8L151x2, STM8L151x3 Description
Doc ID 018780 Rev 4 13/112
2.2 Ultra-low-power continuum
The ultra-low-power Low density STM8L15xxx devices are fully pin-to-pin, software and
feature compatible. Besides the full compatibility within the family, the devices are part of
STMicroelectronics microcontrollers ultra-low-power strategy which also includes
STM8L101xx and STM32L15xxx. The STM8L and STM32L families allow a continuum of
performance, peripherals, system architecture, and features.
They are all based on STMicroelectronics 0.13 µm ultra-low leakage process.
Note: 1 The STM8L151xx and STM8L152xx are pin-to-pin compatible with STM8L101xx devices.
Performance
All families incorporate highly energy-efficient cores with both Harvard architecture and
pipelined execution: advanced STM8 core for STM8L families and ARM Cortex™-M3 core
for STM32L family. In addition specific care for the design architecture has been taken to
optimize the mA/DMIPS and mA/MHz ratios.
This allows the ultra-low-power performance to range from 5 up to 33.3 DMIPs.
Shared peripherals
STM8L151xx/152xx and STM32L15xx share identical peripherals which ensure a very easy
migration from one family to another:
● Analog peripherals: ADC1 and comparators COMP1/COMP2
● Digital peripherals: RTC and some communication interfaces
Common system strategy
To offer flexibility and optimize performance, the STM8L151xx/152xx and STM32L15xx
devices use a common architecture:
● Same power supply range from 1.8 to 3.6 V, down to 1.65 V at power down
● Architecture optimized to reach ultra-low consumption both in low power modes and
Run mode
● Fast startup strategy from low power modes
● Flexible system clock
● Ultra-safe reset: same reset strategy for both STM8L15x and STM32L15xxx including
power-on reset, power-down reset, brownout reset and programmable voltage detector.
Features
ST ultra-low-power continuum also lies in feature compatibility:
● More than 10 packages with pin count from 20 to 100 pins and size down to 3 x 3 mm
● Memory density ranging from 4 to 128 Kbytes