STM32L152R8T6 STMicroelectronics, STM32L152R8T6 Datasheet - Page 13

• Manufacturer Part Number: STM32L152R8T6
• Description: MCU ARM 64KB FLASH LCD 64LQFP
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32L152R8T6

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 51
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 20x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LFQFP
• Core: ARM Cortex M3
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11198

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
consumptions)
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 consumptions: refer to
Low power run mode
This mode is achieved with the multispeed internal (MSI) RC oscillator set to the
minimum clock (64 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 consumptions: 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 consumptions: 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 consumptions: refer to
Standby mode (with or 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 RC and HSE crystal oscillators are also switched off. After entering
for consumptions).
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 4
Table
CORE
18.
domain are stopped, the PLL, MSI RC, HSI
Table
Table
Table
15.
16.
CORE
17.
Table 13
domain is powered off. The
Functional overview
for consumptions.
Table 13
for
13/107