Patricia S.
What pin is used for analog input?
The pin designated for analog input should be connected to the ADC peripheral of the microcontroller. Refer to the datasheet or pinout diagram for the exact pin assignment.
STM32L451xx family device features and peripheral counts. STMicroelectronics STM32L451CC, STM32L451VE, STM32L451VC, STM32L451RC, STM32L451RE, STM32L451CE
Below you will find brief information for STM32L451CC, STM32L451RC, STM32L451VC, STM32L451CE, STM32L451RE, STM32L451VE. These ultra-low-power microcontrollers offer an Arm Cortex-M4 CPU with FPU operating up to 80 MHz, ensuring efficient performance. Key features include up to 512KB Flash and 160KB SRAM, a variety of analog peripherals like ADC, DAC, and comparators, as well as extensive communication interfaces. Users can benefit from advanced power-saving modes, capacitive sensing capabilities, and real-time clock functionality for diverse embedded applications.
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Key features
Ultra-low-power with FlexPowerControl (145 nA VBAT, 22 nA Shutdown, 84 µA/MHz run mode)
Arm 32-bit Cortex-M4 CPU with FPU, up to 80 MHz, 100DMIPS
Adaptive real-time accelerator for 0-wait-state Flash execution
Up to 512 KB single bank Flash memory and 160 KB SRAM
Rich analog peripherals: 1x 12-bit ADC (5 Msps), 1x 12-bit DAC, 1x OPAMP, 2x Comparators
16 communication interfaces: 4x I2C, 3x USART, 1x LPUART, 3x SPI, 1x Quad SPI, CAN, SDMMC, SAI, IRTIM
Up to 21 capacitive sensing channels
Multiple timers: advanced motor-control, general purpose, low-power, watchdogs, SysTick
Wide operating temperature range (-40 °C to 125 °C)
True random number generator and CRC calculation unit
Frequently asked questions
The STM32L451xx microcontrollers operate with a power supply ranging from 1.71 V to 3.6 V and are designed for a temperature range of -40 °C to 85/125 °C.
The STM32L451xx features an Arm 32-bit Cortex-M4 CPU with FPU, an Adaptive real-time accelerator, and operates at a frequency of up to 80 MHz, delivering 100DMIPS.
The devices offer up to 512 KB of single bank Flash memory with proprietary code readout protection, and 160 KB of SRAM, which includes 32 KB with hardware parity check.
Integrated analog peripherals include one 12-bit ADC (5 Msps), one 12-bit DAC output channel, one operational amplifier with built-in PGA, two ultra-low-power comparators, and an accurate 2.5 V or 2.048 V reference voltage buffered output.
The STM32L451xx supports 16 communication interfaces, including 1x SAI, 4x I2C, 3x USARTs, 1x UART, 1x LPUART, 3x SPIs (plus 1x Quad SPI), CAN, SDMMC interface, and IRTIM.
User questions
