8-Bit MCU Marries Ultra Low Power and Rich Analog I/O

STMicroelectronics has announced STM8L050, a low power 8-bit MCU that embeds rich analog peripherals, a DMA controller and separated data EEPROM—all in an inexpensive SO-8 package with up to six user I/Os. Built around ST’s STM8 core running at up to 16 MHz, the STM8L050 is well suited for resource-constrained products like industrial sensors, toys, access cards, e-bike controllers, home-automation or lighting products, smart printer cartridges or battery chargers.

The integrated DMA (Direct Memory Access) controller speeds application performance by streamlining data transfers between peripherals and memory, or from memory to memory, ultimately saving power consumption. The 256 bytes of separated EEPROM allows applications to store important program data when the MCU is powered down, while allowing maximum utilization of flash for code storage.

Alongside two comparators, the STM8L050 has a 4-channel 12-bit analog-digital converter (ADC) and a low-power real-time clock (RTC) with programmable alarm and periodic wakeups, allowing designers to minimize external analog components. In addition, support for either an external or internal clock at up to 16 MHz further enhances flexibility to balance performance with bill-of-materials (BOM) savings.

Other features include 8 KB of on-chip flash memory, 1 KB of RAM, two 16-bit timers, one 8-bit timer, and popular connectivity and debug interfaces including SPI, I2C, UART and SWIM. The STM8L050 provides power-saving modes that cut current to as little as 350 nA, and operates over a wide voltage range from 3.6 V down to 1.8 V. The MCUs are fully specified from -40°C to 125°C, ensuring robustness and reliability in demanding applications such as industrial controls or lighting products.

The STM8L050J3 is in production now, and available in the SO-8 package, priced from $0.25 for orders of 10,000 pieces.

STMicroelectronics | www.st.com