The new STM32L4 MCUs from STMicroelectronics STM32L496 and STM32L4A6 offering on-chip RAM up to 320 Kbytes and flash memory of 1 Mbyte scored 273 in EEMBC CoreMark, making them attractive for low power performance by also achieving ULPBench score of 217 .
The other features include:
ST said it also extended the flexibility of the STM32L4 power architecture, giving developers the option to power the core from an external DC/DC converter for extra efficiency. The STM32L4 Flex Power Control architecture includes a new shutdown mode for additional energy savings, alongside multiple independent core and peripheral supplies, and a separate VBAT domain with charging circuitry that gives flexibility to utilize or recharge battery energy.
Chip price: Budgetary pricing is from $4.63 for the STM32L496RET6 with 512 Kbytes Flash and 320 Kbytes SRAM in LQFP64 package, for orders of 10,000 pieces per year.
Board price: The development board is priced starting at $19 for the legacy-compatible Nucleo-144 board (NUCLEO-L496ZG), which is available now. The Discovery Kit (STM32L496G-DISCO) is also available now, priced 70$. The NUCLEO-L496ZG-P board with external DC/DC converter will be available to distributors in April 2017.