STM32L552 in STM32 Family
The STM32L552 sub-family from STMicroelectronics is an ultra-low-power microcontroller line built on the ARM Cortex-M33 core with TrustZone for hardware-based security. Operating at up to 110 MHz, these devices balance computational performance with advanced power management. They are designed for developers who require a high level of security and efficiency in power-constrained environments, offering a rich set of digital and analog peripherals, including USB Type-C and Power Delivery controllers.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | I/O Pins | Package | ADC/DAC | Stock |
|---|---|---|---|---|
| STM32L552VET6 (STMicroelectronics) | 83 | LQFP-100 | A/D 16x12b; D/A 2x.. | 1,937 |
| STM32L552RET6 (STMicroelectronics) | 52 | LQFP-64 | A/D 16x12b; D/A 2x.. | 901 |
| STM32L552ZET6 (STMicroelectronics) | 111 | LQFP-144 | A/D 14x12b; D/A 2x.. | — |
| STM32L552CET6 (STMicroelectronics) | 38 | LQFP-48 | A/D 9x12b; D/A 2x12b | — |
Variants within the STM32L552 sub-family primarily differ based on their physical packaging and pin counts, ranging from 48-pin (CET6) to 144-pin (ZET6) configurations. While the core 512KB Flash memory and 110MHz speed remain consistent across these members, the larger packages offer significantly more GPIOs and expanded access to peripheral interfaces such as additional timers and ADC channels to suit diverse PCB space and connectivity requirements.
