STM32L151C6 STMicroelectronics, STM32L151C6 Datasheet - Page 13

• Manufacturer Part Number: STM32L151C6
• Description: Ultra-low-power ARM Cortex-M3 MCU with 32 Kbytes Flash, 32 MHz CPU, LCD, USB
• Manufacturer: STMicroelectronics

Specifications of STM32L151C6

• Operating Power Supply Range: 1.65 V to 3.6 V (without BOR) or 1.8 V to 3.6 V (with BOR option)
• Temperature Range: –40 to 85 °C
• 4 Modes: Sleep, Low-power run (9 μA at 32 kHz), Low-power sleep (4.4 μA),Stop with RTC (1.45 μA), Stop (570 nA), Standby (300 nA)
• Ultralow Leakage Per I/o: 50 nA
• Fast Wakeup From Stop: 8 μs
• Core: ARM 32-bit Cortex™-M3 CPU
• Dma: 7-channel DMA controller, supporting timers, ADC, SPIs, I2Cs and USARTs

STM32L151xx, STM32L152xx
3.1
Low power modes
The ultralow power STM32L15xxx 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:
●
●
●
Seven low power modes are provided to achieve the best compromise between low power
consumption, short startup time and available wakeup sources:
●
●
●
●
In range 1 (V
Table 13
In range 2 (full V
consumption)
In range 3 (full V
multispeed internal RC oscillator clock source). Refer to
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: refer to
Low power run mode
This mode is achieved with the multispeed internal (MSI) RC oscillator set to the
minimum clock (65 kHz), execution from SRAM or Flash memory, and internal regulator
in low power mode to minimize the regulator's operating current. In the Low power run
mode, the clock frequency and the number of enabled peripherals are both limited.
Low power run mode consumption: refer to
Low power sleep mode
This mode is achieved by entering the Sleep mode with the internal voltage regulator in
Low power mode to minimize the regulator’s operating current. In the 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.
Low power sleep mode consumption: refer to
Stop mode (with or without RTC)
The Stop mode achieves the lowest power consumption while retaining the RAM and
register contents. All clocks in the V
RC 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, the PVD output, the RTC alarm(s),
the USB wakeup, the RTC tamper event, the RTC timestamp event, the RTC Wakeup,
the Comparator 1 event or Comparator 2 event.
Stop mode consumption: refer to
for consumption).
DD
range limited to 2.0-3.6 V), the CPU runs at up to 32 MHz (refer to
DD
DD
range), the CPU runs at up to 16 MHz (refer to
range), the CPU runs at up to 4 MHz (generated only with the
Doc ID 17659 Rev 6
Table
CORE
18.
Table
domain are stopped, the PLL, MSI RC, HSI
Table
Table
15.
16.
17.
Table 13
Functional overview
for consumption.
Table 13
for
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