New M4N Group of Cortex-M4 MCUs in the TXZ+ family

These devices extend and enhance the TXZ+ family advanced class and include an ARM Cortex-M4 core with floating point unit (FPU), running at speeds up to 200MHz, integrated 2MB code flash and 32kB data flash memory with 100k write cycle endurance. These microcontrollers also offer a range of interfacing and communication options such as Ethernet, CAN and USB 2.0 FS OTG with integrated PHY.

These M4N group microcontrollers are suited for office equipment, building and factory automation applications, as well as being used in industrial networking and information management devices. Within the consumer space these devices are intended for IoT-based home appliances, home security, and smart meters.

These products have enhanced communication functions integrated including a serial memory interface that also supports Quad/Octal SPI, audio interface (I2S) and external bus interface in addition to UART, FUART, TSPI and I2C supported by a built-in 3-unit DMAC. The devices can also allocate independent DMA and RAM for each peripheral circuit, and use a bus matrix circuit configuration that allows the bus master to efficiently transfer data. As a result, M4N group devices can enable an Ethernet controller, CAN, and USB controller to be processed independently in parallel at the same time.

These new devices support a variety of sensing applications with a high-speed, high-precision 12-bit analogue/digital converter (ADC) that allows individual sample and hold times to be set for each of the 24 ADC input channels. A dual-channel 8-bit digital-to-analogue converter (DAC) and a range of motor control functions are also included in the new devices.

The self-diagnosis functions incorporated in the devices for ROM, RAM, ADC and clock help customers to achieve IEC60730 Class B functional safety certification.

Full documentation, sample software (with actual usage examples), and driver software which controls the interface for each peripheral are available for download on the Toshiba website. Design process, evaluations boards and development environments are also provided in cooperation with ARM global ecosystem partners.

The new devices are available in a selection of fine-pitch LQFP and VFBGA packages. Mass production begins this month.