STM32L152C6 datasheet(17/131 Pages) STMICROELECTRONICS

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STM32L151x6/8/B, STM32L152x6/8/B

Functional overview

3.2

ARM Cortex-M3 core with MPU

The ARM Cortex-M3 processor is the industry leading processor for embedded systems. It

has been developed to provide a low-cost platform that meets the needs of MCU

implementation, with a reduced pin count and low-power consumption, while delivering

outstanding computational performance and an advanced system response to interrupts.

The ARM Cortex-M3 32-bit RISC processor features exceptional code-efficiency, delivering

the high-performance expected from an ARM core in the memory size usually associated

with 8- and 16-bit devices.

The memory protection unit (MPU) improves system reliability by defining the memory

attributes (such as read/write access permissions) for different memory regions. It provides

up to eight different regions and an optional predefined background region.

Owing to its embedded ARM core, the STM32L15xxx is compatible with all ARM tools and

software.

DAC

Temperature

sensor

Comparators

16-bit and 32-bit

Timers

IWDG

WWDG

Touch sensing

Systick Timer

GPIOs

3 Pins

Wakeup time to

Run mode

0 µs

0.36 µs

3 µs

32 µs

< 8 µs

50 µs

Consumption

VDD=1.8V to 3.6V

(Typ)

Down to

214 µA/MHz

(from Flash)

Down to

50 µA/MHz

(from Flash)

Down to

9 µA

Down to

4.4 µA

0.5 µA (No

RTC) VDD=1.8V

0.3 µA (No RTC)

VDD=1.8V

1.4 µA (with

RTC) VDD=1.8V

1 µA (with RTC)

VDD=1.8V

0.5 µA (No

RTC) VDD=3.0V

0.3 µA (No RTC)

VDD=3.0V

1.6 µA (with

RTC) VDD=3.0V

1.3 µA (with

RTC) VDD=3.0V

1. The startup on communication line wakes the CPU which was made possible by an EXTI, this induces a delay before

entering run mode.

Table 5. Working mode-dependent functionalities (from Run/active down to standby) (continued)

Ips

Run/Active

Sleep

Low-

power

Run

Low-

power

Sleep

Stop

Standby

Wakeup

capability

Wakeup

capability

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