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Tuesday, January 15, 2019

ST adds features to 25c 8bit micro

By Nick Flaherty www.flaherty.co.uk

8bit controllers are still widely used, and ST has added a range of features to its STM8L050 range that starts at $0.25. 

The STM8L series adds a four channel, 12bit ADC, a DMA controller, and separated data EEPROM, all in an inexpensive SO-8 package with up to six user I/Os for a 16MHz core.
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The devices are aimed at 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 use of Flash for code storage.

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

Other features include 8Kbytes of on-chip Flash memory, 1Kbyte of RAM, two 16-bit timers, one 8-bit timer, and popular connectivity and debug interfaces including SPI, I2C, UART, and SWIM.

The STM8L050 has power-saving modes that cut current to as little as 350nA, and operates over a wide voltage range from 3.6V down to 1.8V. 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.

www.st.com/stm8lvl

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