Toshiba Electronic Devices & Storage Corporation has announced the TXZ+ Family Entry‑Class M4H Group, standard microcontrollers featuring an Arm Cortex‑M4 core with a floating-point unit (FPU). The new microcontrollers are designed for application in small‑scale system control of consumer products, such as air conditioners and washing machines, and in industrial equipment, including multifunction printers and factory automation systems. Toshiba is now providing engineering samples of the new products.
As modern consumer products and industrial equipment become increasingly sophisticated and diversified, microcontrollers used in system control must deliver enhanced real‑time capabilities and stability, support ease of design, deliver the versatility necessary for long‑term operation, and be flexible enough to support the development of derivative products. Toshiba has addressed these challenges by developing the TXZ+ Family Entry‑Class M4H Group for system control applications, with an emphasis on versatility.
The new microcontrollers are designed as entry-level products that deliver a set of essential functions. They employ an Arm Cortex‑M4 core with an FPU, and have a maximum operating frequency of 120MHz—the computing performance and responsiveness required for consumer products and industrial equipment, and they can also handle the core applications of system control, including control logic, interface processing, and timing control.
M4H products support a supply voltage range of 2.7V to 5.5V and, by integrating a high‑speed oscillator with ±1% accuracy, help to reduce external components and improve design flexibility. This suits them for use in consumer products and industrial equipment with 5V power supplies.
The microcontrollers also integrate essential peripheral functions for system control, including a 12‑bit analogue-to-digital converter (ADC), timers, universal asynchronous receiver/transmitter (UART), serial peripheral interface (SPI), inter‑integrated circuit (I²C), and direct memory access (DMA). An additional feature is an advanced programmable motor driver (A‑PMD) that supports brushless DC motor control, ensuring flexible use in line with application requirements and system configurations.
Toshiba supports device evaluation and review with the provision of engineering samples and a development environment. The company also supports smooth progress from initial evaluation to application development by providing starter kits, sample software, CMSIS-compliant drivers, and user environments for major IDEs.
Toshiba will continue to expand these enablement resources, including documentation, and will further strengthen its lineup of microcontroller products to meet diverse needs.
Applications
- System control units for home appliances and consumer equipment
- Industrial equipment and factory automation (FA) systems
- Office and commercial equipment
Features
- Arm Cortex‑M4 core with FPU: operating 120MHz (max)
- Supply voltage range: 2.7V to 5.5V
- Internal memory
Code flash memory: 256 KB
RAM: 18 KB - Self-diagnosis functions for functional safety
- Three types of packages, selectable according to mounting area and assembly conditions
Main Specifications
| Product group | M4H group | |||
| Part number | TMPM4H4FYUG | TMPM4H2FYDUG | TMPM4H1FYUG | |
| CPU core | Arm Cortex-M4 – Floating point unit (FPU) ‒ Memory protection unit (MPU) | |||
| Maximum operating frequency | 120MHz | |||
| Internal oscillator | Oscillation frequency | 10MHz (±1%) | ||
| Internal memory | Flash (code) | 256KB (Program/erase cycles: up to 100,000 times) | ||
| RAM | 18KB, with parity | |||
| I/O port | 51 pins | 37 pins | 33 pins | |
| External interrupt | 11 factors, 16 pins | 10 factors, 12 pins | 9 factors, 11 pins | |
| DMA controller (DMAC) | 32 channels | 27 channels | ||
| Timer function | 32-bit timer event counter (T32A) | 6 channels (12 channels if used as 16-bit timer) | ||
| Communication function | UART | 4 channels | 3 channels | 3 channels |
| I2C interface/I2C interface version A (I2C/EI2C) | 1 channel | |||
| TSPI | 4 channels | 2 channels | ||
| Analog function | 12-bit AD converter (ADC) | 12 inputs in 1 unit | 10 inputs in 1 unit | 9 inputs in 1 unit |
| Motor control circuit | Advanced programmable motor control circuit(A-PMD) | 1 channel | ||
| Other | CRC calculation circuit(CRC) | 1 channel CRC32, CRC16 | ||
| System function | Watchdog timer(SIWDT) | 1 channel | ||
| Voltage detection circuit(LVD) | 1 channel | |||
| Oscillation frequency detector(OFD) | 1 channel | |||
| Debug interface | JTAG/SWTRACE (4bits)NBDIF | JTAG/SW | ||
| Operating voltage | 2.7V to 5.5V, single voltage supply | |||
| Package/Pin | LQFP64(10mm×10mm,0.5mm pitch) | LQFP48(7mm×7mm,0.5mm pitch) | 6 channels (12 channels if used as a 16-bit timer) | |
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