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STMicroelectronics STM32L073CBT6 — Microcontrollers & Processors (MCU / MPU / DSP)
STMicroelectronics

STM32L073CBT6 ARM Cortex-M0+ MCU, 32 MHz, 128 KB Flash

MPNSTM32L073CBT6
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STMicroelectronics STM32L0 series, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 128 KB Flash, 20 KB SRAM, 6 KB EEPROM, 37 I/O, 48-LQFP, -40 to 85 °C, 1.8 V to 3.6 V.

$6.9300Ref. price · indicative, final on quote
STM32L073CBT6 datasheet
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Specifications

STM32L073CBT6 Technical Specifications
ParameterValue
SeriesSTM32L0
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed32MHz
PackageTray
RAM size20K x 8
Core size32-Bit Single-Core
EEPROM size6K x 8
PeripheralsBrown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART, USB
Number of i (O)37
Core processorARM® Cortex®-M0+
Case48-LQFP
Data convertersA/D 10x12b; D/A 2x12b
Program memory size128KB (128K x 8)

Product details

What the STM32L073CBT6 brings to a low-power BOM

The STM32L073CBT6 is an STMicroelectronics 32-bit microcontroller built around the ARM Cortex-M0+ core, clocked at 32 MHz.

The 128 KB Flash and 20 KB SRAM are sized for moderate firmware loads — think a FreeRTOS application with a USB stack and a small GUI, not a Linux-class heap. The 6 KB EEPROM is a genuine differentiator: you can store calibration constants, meter logs, or configuration data without an external serial EEPROM or wear-leveling scheme in Flash. The on-chip LCD driver (up to 8x40 segments) and the 10-channel 12-bit ADC plus 2-channel 12-bit DAC cover many mixed-signal control loops directly. Connectivity includes I²C, SPI, USART, and USB — enough for a sensor hub or a human-machine interface panel.

Frequently asked questions

What is the difference between the STM32L073CBT6 and the STM32L072CBT6?

The STM32L073CBT6 adds 6 KB of embedded EEPROM and an LCD driver peripheral that the STM32L072CBT6 lacks. Both share the same Cortex-M0+ core at 32 MHz, 128 KB Flash, 20 KB SRAM, and 48-LQFP package — the EEPROM and LCD support are the deciding factors if your application needs non-volatile parameter storage or a direct segment-LCD interface.