Datasheet

Description STM8L15xx8, STM8L15xR6
12/134 DocID17943 Rev 6
2.3 Ultralow power continuum
The Ultralow power STM8L151xx and STM8L152xx are fully pin-to-pin, software and
feature compatible. Besides the full compatibility within the family, the devices are part of
STMicroelectronics microcontrollers UltraLow 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 Ultralow leakage process.
Note: 1 The STM8L151xx and STM8L152xx are pin-to-pin compatible with STM8L101xx devices.
2 The STM32L family is pin-to-pin compatible with the general purpose STM32F family.
Please refer to STM32L15xx documentation for more information on these 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 Ultralow 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, DAC1/DAC2, and comparators COMP1/COMP2
• Digital peripherals: RTC and some communication interfaces
Common system strategy
To offer flexibility and optimize performance, the STM8L15xx and STM32L15xx devices use
a common architecture:
• Same power supply range from 1.65 to 3.6 V. For STM8L101xx and medium density
STM8L15xx, the power supply must be above 1.8 V at power-on, and go below 1.65 V
at power-down.
• Architecture optimized to reach ultralow consumption both in low power modes and
Run mode
• Fast startup strategy from low power modes
• Flexible system clock
• Ultrasafe reset: same reset strategy for both STM8L15xx and STM32L15xx including
power-on reset, power-down reset, brownout reset and programmable voltage
detector.
Features
ST UtraLow 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