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Microcontroller large Renesas has introduced a brand new Arm Cortex-M23 primarily based vary, the RA2A2 — providing a 24-bit sigma-delta analog-to-digital converter (SDADC) and a dual-bank flash system which permits for safer over-the-air (OTA) updates.
“Renesas has labored carefully with our prospects to grasp their necessities for next-generation programs that may assist essential power conservation objectives,” claims Renesas’ Akihiro Kuroda of the corporate’s newest microcontroller vary. “The RA2A2 Group MCUs [Microcontroller Units] are the results of that collaboration coupled with our world-leading technical experience. We’re proud to supply this resolution that can allow important power financial savings in a big selection of programs.”
Renesas’ newest microcontroller household, the RA2A2, features a 24-bit sigma-delta ADC with digital filter and dual-bank flash. (📷: Renesas)
The RA2A2 microcontrollers are primarily based round an Arm Cortex-M23 core operating at as much as 48MHz, with a claimed energy draw at 100µA/MHz in lively use and 0.4µA in software program standby. They provide 48kB of static RAM (SRAM), 8kB of information flash reminiscence, and 512kB of program flash reminiscence — and it is right here the primary important new options may be discovered. The flash reminiscence is dual-banked with a bank-swap perform, making it simpler to implement secure over-the-air (OTA) updates by modifying one of many two banks and solely switching to the brand new firmware as soon as the replace has been verified.
The opposite main new function within the chips is a 24-bit sigma-delta analog-to-digital converter (SDADC) with digital filter, which sits alongside a extra conventional 12-bit analog-to-digital converter (ADC) and an built-in temperature sensor. Mixed, Renesas says, the options of the brand new chips are perfect for the digitalization of current analog programs — and {hardware} AES cryptography acceleration means information may be stored secure in transit too.
Extra data on the R2A2 household, which is offered in 100-, 80-, and 64-pin low-profile quad flat package deal (LFQFP) codecs, is offered on the Renesas web site; models can be found to order direct from Renesas beginning at $8.99 per chip.
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