Toshiba ARM Cortex-M3 microcontrollers

Toshiba has added the M3H group (2) to the M3H group of the 32-bit microcontroller product group TXZ+TM Family Advanced Class equipped with Cortex-M3 using the 40 nm process.

The microcontrollers have expanded the code flash memory capacity from 512 kB (partially 256 kB or 384 kB) of Toshiba’s existing products M3H group (1) to 1 MB, and the RAM capacity from 66 kB of the Toshiba’s existing products M3H group (1) to 130 kB. Other features, such as an ARM Cortex-M3 core running up to 120 MHz, integrated code flash, and 32 kB data flash memory with 100K program/erase cycle endurance have been maintained.

These microcontrollers also offer various interface and motor control options, such as UART, I2C interface, Advanced Encoder Input Circuit and Advanced Programmable Motor Control Circuit. Toshiba’s line-up of microcontrollers in the M3H group contribute to IoT and advanced functionality in a range of applications including motors, home appliances and industrial equipment.

In the new microcontrollers, the 1 MB code flash is implemented with two separate areas of 512 kB each. This implementation allows instructions to be read from one area, while the updated code is programmed into the other area in parallel. The firmware rotation function is realised by the area swap function.

The microcontrollers are equipped with UART, TSPI, I2C interface, 2-unit DMAC and an LCD Display Controller to meet the requirements of a variety of consumer or industrial applications. To support various kinds of sensing, the new products have maximum 21 channels of 12-bit high-speed, high-precision analog/digital converter (ADC), that are selectable from two sample hold time for each analog input pin.