Micros

Portfolio of low power microcontrollers expanded

13th January 2021
Lanna Deamer

Toshiba Electronics has strengthened its presence in the low power microcontroller market through a greater breadth of product groups within its TXZ+ family. Optimised for motor control systems, domestic appliances, human machine interfaces and connected IoT infrastructure, these highly integrated devices are based on Arm Cortex-M processor cores.

They leverage a 40nm CMOS process that exhibits reduced operating and standby current levels. This allows them to deliver suitable performance alongside elevated energy efficiency. With a broad array of different flash memory capacity options (up to 2MB, with 100k write cycle endurance), plus various package formats available, customers can benefit from the convenience of a scalable platform solution. This will allow them to address different requirements while reducing the associated engineering effort and maximising software re-use.

Each microcontroller features a multi-channel 12-bit Analogue-to-Digital Converter (ADC). Among the different interfaces that may be specified are CAN, Ethernet and USB. Security mechanisms such as secure boot and access authentication, plus IEC60730 Class B-compliant functional safety features are all included.

Devices in the new M3H group are based on the Arm Cortex-M3 processor core. Operating at up to 120MHz (150 DMIPS), they are supplied in LQFP packages. They each feature 512KB code flash, 32KB data flash and 4KB of separated user flash, complemented with a 12-bit ADC and two 8-bit Digital-to-Analogue Converters (DACs). Other highlights include Advanced Programmable Motor Driver (A-PMD) functionality and built-in LCD driving capabilities.

Members of the M4K and M4M groups are based on an Arm Cortex-M4 processor core with Floating Point Unit (FPU). Operating up to 160MHz (203 DMIPS), they feature up to 256KB code flash, 32KB data flash and 4KB of user flash. Each of these devices include Toshiba’s original motor control IP, which enables sensorless Field Oriented Control (FOC) of up to three motors via a single microcontroller device. M4K and M4M devices are supplied in LQFP packages.

The microcontrollers of the M4M group include an additional CAN controller enabling direct connectivity to the commonly used industrial field bus. M4G and M4N group devices are optimised for complex data processing. The integrated Arm Cortex-M4 processor core with FPU operates at up to 200MHz (254 DMIPS). The devices provide integrated code flash of up to 2MB and a separated 32KB data flash.

Featuring A-PMD IP for motor control, they are housed in both LQFP and BGA type packages - thereby offering the best fit for both industrial and consumer applications. The M4N group devices additionally include a USB 2.0 Full-Speed OTG controller with integrated PHY (up to 2 ports), a 10/100 Ethernet MAC and a CAN controller.

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