STM32L151C6U6 datasheet(11/131 Pages) STMICROELECTRONICS

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STM32L151x6/8/B, STM32L152x6/8/B

Description

2.2

Ultralow power device continuum

The ultralow power STM32L151xx and STM32L152xx are fully pin-to-pin and software

compatible. Besides the full compatibility within the family, the devices are part of

STMicroelectronics microcontrollers ultralow power strategy which also includes

STM8L101xx and STM8L15xx devices. The STM8L and STM32L families allow a

continuum of performance, peripherals, system architecture and features.

They are all based on STMicroelectronics ultralow leakage process.

Note:

The ultralow power STM32L and general-purpose STM32Fxxxx families are pin-to-pin

compatible. The STM8L15xxx devices are pin-to-pin compatible with the STM8L101xx

devices. Please refer to the STM32F and STM8L documentation for more information on

these devices.

2.2.1

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.

2.2.2

Shared peripherals

STM8L15xxx and STM32L1xxxx share identical peripherals which ensure a very easy

migration from one family to another:

•

Analog peripherals: ADC, DAC and comparators

•

Digital peripherals: RTC and some communication interfaces

2.2.3

Common system strategy

To offer flexibility and optimize performance, the STM8L15xx and STM32L1xxxx families

use a common architecture:

•

Same power supply range from 1.65 V to 3.6 V, (1.65 V at power down only for

STM8L15xx devices)

•

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 including power-on reset, power-down reset,

brownout reset and programmable voltage detector.

2.2.4

Features

ST ultralow power continuum also lies in feature compatibility:

•

More than 10 packages with pin count from 20 to 144 pins and size down to 3 x 3 mm

•

Memory density ranging from 4 to 384 Kbytes

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