STM32L162QD STMicroelectronics, STM32L162QD Datasheet - Page 13

• Manufacturer Part Number: STM32L162QD
• Description: Ultra-low-power ARM Cortex-M3 MCU with 384 Kbytes Flash, 32 MHz CPU, LCD, USB, 3xOp-amp, AES
• Manufacturer: STMicroelectronics

Specifications of STM32L162QD

• 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)

STM32L162VD, STM32L162ZD, STM32L162QD, STM32L162RD
1. Legend:
3.1
AF: alternate function
ADC: analog-to-digital converter
AES: advanced encryption standard hardware accelerator
BOR: brown out reset
DMA: direct memory access
DAC: digital-to-analog converter
I²C: inter-integrated circuit multimaster interface
Low power modes
The ultralow power STM32L162xD supports dynamic voltage scaling to optimize its power
consumption in run mode. The voltage from the internal low-drop regulator that supplies the
logic can be adjusted according to the system’s maximum operating frequency and the
external voltage supply.
There are three power consumption ranges:
●
●
●
Seven low power modes are provided to achieve the best compromise between low power
consumption, short startup time and available wakeup sources:
●
●
●
●
Range 1 (V
Range 2 (full V
Range 3 (full V
only with the multispeed internal RC oscillator clock source).
Sleep mode
In Sleep mode, only the CPU is stopped. All peripherals continue to operate and can
wake up the CPU when an interrupt/event occurs. Sleep mode power consumption at
16 MHz is about 1 mA with all peripherals off.
Low power run mode
This mode is achieved with the multispeed internal (MSI) RC oscillator set to the
minimum clock (131 kHz), execution from SRAM or Flash memory, and internal
regulator in low power mode to minimize the regulator's operating current. In Low
power run mode, the clock frequency and the number of enabled peripherals are both
limited.
Low power sleep mode
This mode is achieved by entering Sleep mode with the internal voltage regulator in
Low power mode to minimize the regulator’s operating current. In Low power sleep
mode, both the clock frequency and the number of enabled peripherals are limited; a
typical example would be to have a timer running at 32 kHz.
When wakeup is triggered by an event or an interrupt, the system reverts to the run
mode with the regulator on.
Stop mode with RTC
Stop mode achieves the lowest power consumption while retaining the RAM and
register contents and real time clock. All clocks in the V
PLL, MSI RC, HSI RC and HSE crystal oscillators are disabled. The LSE or LSI is still
running. The voltage regulator is in the low power mode.
The device can be woken up from 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
be, the RTC alarm(s), the USB wakeup, the RTC tamper events, the RTC timestamp
event, the RTC wakeup.
DD
range limited to 2.0-3.6 V), with the CPU running at up to 32 MHz
DD
DD
range), with a maximum CPU frequency limited to 4 MHz (generated
range), with a maximum CPU frequency of 16 MHz
Doc ID 022268 Rev 2
CORE
domain are stopped, the
Functional overview
13/124