STM32L151VD STMicroelectronics, STM32L151VD Datasheet - Page 14

• Manufacturer Part Number: STM32L151VD
• Description: Ultra-low-power ARM Cortex-M3 MCU with 384 Kbytes Flash, 32 MHz CPU, LCD, USB, 3xOp-amp
• Manufacturer: STMicroelectronics

Specifications of STM32L151VD

• Operating Power Supply Range: 1.65 V to 3.6 V (without BOR) or 1.8 V to 3.6 V
• 7 Modes: Sleep, Low-power run (11 μA at 32 kHz) , Low-power sleep (4.4 μA), Stop with RTC, Stop (650 nA), Standby with RTC, Standby (300 nA)
• Ultralow Leakage Per I/o: 50 nA max
• Fast Wakeup Time From Stop: 8 μs
• Core: ARM 32-bit Cortex™-M3 CPU
• Dma: 12-channel DMA controller
• 11 Timers: one 32-bit and six 16-bit general-purpose timers, two 16-bit basic timers, two watchdog timers (independent and window)

Functional overview
Note:
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The RTC, the IWDG, and the corresponding clock sources are not stopped automatically by
entering the Stop or Standby mode.
ARM
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 STM32L15xxD is compatible with all ARM tools and
software.
Stop mode without RTC
The Stop mode achieves the lowest power consumption while retaining the RAM and
register contents. All clocks are stopped, the PLL, MSI RC, HSI and LSI RC, LSE and
HSE crystal oscillators are disabled. The voltage regulator is in the low power mode.
The device can be woken up from the Stop mode by any of the EXTI line, in 8 µs. The
EXTI line source can be one of the 16 external lines. It can be the PVD output, the
Comparator 1 event or Comparator 2 event (if internal reference voltage is on). It can
also be waken by the USB wakeup.
Standby mode with RTC
This Standby mode is used to achieve the lowest power consumption and real time
clock. The internal voltage regulator is switched off so that the entire V
powered off. The PLL, MSI RC, HSI RC and HSE crystal oscillators are also switched
off. The LSE or LSI is still running. After entering Standby mode, the RAM and register
contents are lost except for registers in the Standby circuitry (wakeup logic, IWDG,
RTC, LSI, LSE Crystal 32K osc, RCC_CSR).
The device exits the Standby mode in 60 µs when an external reset (NRST pin), an
IWDG reset, a rising edge on one of the three WKUP pins, RTC alarm (Alarm A or
Alarm B), RTC tamper event, RTC timestamp event or RTC Wakeup event occurs.
Standby mode without RTC
The Standby mode is used to achieve the lowest power consumption. The internal
voltage regulator is switched off so that the entire V
PLL, MSI RC, HSI and LSI RC, HSE and LSE crystal oscillators are also switched off.
After entering Standby mode, the RAM and register contents are lost except for
registers in the Standby circuitry (wakeup logic, IWDG, RTC, LSI, LSE Crystal 32K osc,
RCC_CSR).
The device exits the Standby mode in 60 µs when an external reset (NRST pin) or a
rising edge on one of the three WKUP pin occurs.
®
Cortex™-M3 core with MPU
Doc ID 022027 Rev 2
CORE
STM32L151xD, STM32L152xD
domain is powered off. The
CORE
domain is