Microcontroller family expands with up to 512KB of flash memory

Jon Lawson

Toshiba Electronics has announced the launch of the second M3H group in the TXZ family of low-power, high-speed microcontrollers based on the Arm Cortex-M3 core.

The new M3H devices incorporate analog circuits and the wide range of basic functions required to support comprehensive motor control for applications in consumer and industrial devices. The line-up includes a range of 64 to 144-pin packages, 256 to 512KB of flash memory, and 32KB data flash memory.
The operating frequency is 80MHz, twice the speed of the first M3H group. Integrated features include high-precision analog circuits such as a 12 bit ADC converter with 1.5μs conversion speed with up to 21 channels, and an 8 bit, 2 channel, DAC.
Toshiba’s Advanced-Programmable Motor Driver (A-PMD), a single channel motor control circuit that provides inverter control of brushless DC motors is also built-in. The IC also incorporates versatile general-purpose peripheral circuitry including up to 6 UART channels, 2-4 channel I2C, 1-5 channels TSPI, and multiple channels of 16 and 32 bit timers.
In addition there is a built-in self-diagnosis function that checks the reference voltage in the ADC, a RAM parity function to detect errors during memory reads, and a single channel CRC calculation circuit that contributes to reducing software processing loads to comply with the IEC 60730 functional safety standard.
The microcontrollers require a power supply of 2.7 to 5.5V and operate from -40 to 85°C.