Best Low Power MCU for Battery-Powered IoT: AVR, PIC, or STM32L Series?

Hi all,I need some advice about a low power MCU I would like to use for an embedded IoT device. The device shall be powered by battery and therefore able to enter deep sleep mode with very low quiescent current. I don't need high CPU performance, so an AVR or PIC microcontroller would be enough. I know STM has some MCUs which would be right for me, but I don't know which version. Any help is welcome.Thanks in advance.

PaulThis is an extremely open-ended question. You have not provided enough information to even venture an answer. Every manufacturer claims to have a processor that is designed for IoT.Industry guru Jack Ganssle has written several blogs on the topic of low power in which he covers some different micros- seehttp://www.ganssle.com/reports/ultra-low-power-design.html
and a recent blog from Jason Sachs discusses similar topicshttps://www.embeddedrelated.com/showarticle/1316.php