STM32L151VB STMicroelectronics, STM32L151VB Datasheet - Page 17

• Manufacturer Part Number: STM32L151VB
• Description: Ultra-low-power ARM Cortex-M3 MCU with 128 Kbytes Flash, 32 MHz CPU, LCD, USB
• Manufacturer: STMicroelectronics

Specifications of STM32L151VB

• 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
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Several prescalers allow the configuration of the AHB frequency, the high-speed APB
(APB2) and the low-speed APB (APB1) domains. The maximum frequency of the AHB and
the APB domains is 32 MHz. See
Figure 2.
2. For the USB function to be available, both HSE and PLL must be enabled, with the CPU running at either
24 MHz or 32 MHz.
Clock security system (CSS): this feature can be enabled by software. If a HSE clock
failure occurs, the master clock is automatically switched to HSI and a software
interrupt is generated if enabled.
Clock-out capability (MCO: microcontroller clock output): it outputs one of the
internal clocks for external use by the application.
Clock tree
Doc ID 17659 Rev 6
Figure 2
for details on the clock tree.
Functional overview
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