Datasheet

DS9178 Rev 4 11/96
STM8L051F3 Description
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2.2 Ultra-low-power continuum
STM8L051F3 is part of STM8’s ultra-low-power value line on which all the devices are pin-
to-pin, software and feature compatible. Besides the full compatibility within the STM8L
family, the devices are part of STMicroelectronics microcontrollers ultra-low-power strategy
which also includes the STM8L001xx, STM8L101xx and STM32L15xxx devices. 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 STM8L051F3 is 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 STM32L15x documentation for more information on these devices.
Performance
All the STMicroelectronics ultra-low-power families incorporate highly energy-efficient cores
with both Harvard architecture and pipelined execution: advanced STM8 core for STM8L
families and ARM
®
32-bit 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
The STM8L05xxx, STM8L15xxx and STM32L15xxx devices share identical peripherals
which ensure a very easy migration from one family to another:
• Analog peripheral: ADC1
• Digital peripherals: RTC and some communication interfaces
Common system strategy
To offer flexibility and optimize performance, the STM8L and STM32L devices use a
common architecture:
• Same power supply range from 1.8 to 3.6 V
• 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 STM8L and STM32L 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
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