64 KB Flash and 2 KB EEPROM — firmware and calibration storage
The 64 KB Flash is sized for moderate-complexity firmware — sensor fusion, USB protocol stacks, or Modbus RTU slaves — with room for an OTA update staging area if the application uses the built-in USB or UART bootloader. The 2K x 8 EEPROM is useful for storing calibration coefficients, device serial numbers, or production trim values without wearing the Flash sectors. Both memory types are on-chip, so no external serial EEPROM is needed for most designs.
Analog integration: 10-channel 12-bit ADC and single 12-bit DAC
A 10-channel 12-bit ADC and a single 12-bit DAC are integrated, reducing the need for external analog front-end components in applications like battery monitoring, temperature sensing, or simple closed-loop control. The ADC's 12-bit resolution is adequate for 0.1% measurement accuracy with proper reference decoupling, though the internal reference accuracy and drift are not specified in the summary — budget a calibration step if absolute accuracy over temperature is required.
The STM32L062K8U6 includes a USB interface, two I²C buses, two SPI ports, multiple UART/USART channels with IrDA support, and an I²S audio interface. The USB controller enables direct PC connection for data logging or firmware updates without an external USB-to-serial bridge. The I²C and SPI buses are sufficient for interfacing with common sensors, displays, and external memory devices in a sensor-hub or human-interface design.
Package and footprint: 32-UFQFN with exposed pad
Housed in a 32-UFQFN package with an exposed pad (5x5 mm body), the part is suited for space-constrained PCBs. The 27 I/O pins are enough for a typical sensor node with a display, keypad, and external memory interface.
This makes it suitable for new designs and long-term production commitments.