Toshiba's ARM Cortex-M4-Based Microcontrollers Deliver High-Speed Data Processing

May 30, 2019 Alix Paultre

Toshiba Electronics Europe added the M4G Group to its TXZ Family of ARM Cortex-M-based microcontrollers for office automation, audio-visual equipment, and industrial applications. Based on the ARM Cortex-M4 core with a floating-point unit (FPU), the devices incorporate high-performance analog circuits, a wide range of timers and communication channels, and a variety of packages, from 100 to 177 pins. Onboard flash memory ranges from 512kB to 1536kB, with up to 194kB of RAM and 32kB of data FLASH that can be rewritten up to 100,000 times.

Features include an operating frequency of up to 160MHz, and operating temperature range from -40°C to +85°C. In addition to high-precision analog circuits that include a 12-bit AD converter (up to 24 channels) with a 1.0μs conversion speed, and an 8-bit DA converter (2 channels), the M4G Group incorporates two DMA controllers, a high-speed DMA controller and a multi-function DMA controller. Additional features include low power consumption and versatile peripheral circuits, such as serial memory interface (SMIF), UART, I2C, TSPI, timers, and support for large-scale systems.

The AD converter allows selection of two sampling periods with arbitrary channels, contributing to a reduction of impedance adjustment components in large-scale systems that require multiple sensors. A built-in interlinking function for timers, UART, and TSPI, and an interval sensor detection circuit contribute to reduced loads in software processing.

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