Over the last decade or so, e-ink price tags have become more and more ubiquitous, and they’ve now reached the point where surplus devices can be found inexpensively on various websites.

The core of this board is the tiny WinnerMicro W600 MCU, which integrates a 32-bit ARM Cortex M3 CPU, along with dual UARTs, I2C, SPI and I2S interfaces, as well as a real-time clock (RTC).

This paper brings out the architectural comparisons between and Classical ARM processors and cortex-M3. The classical ARM series refers to processors starting from ARM9 to ARM11. It tries to explain ...

Footnote: With the announcement of the Cortex™-M3 processor, ARM introduced a new naming scheme for its processors. Previously processors were named for the base processor core such as ARM7™, ARM9™ ...