Toshiba Releases New M4N Group of Arm® Cortex®-M4 Microcontrollers in the TXZ+TM Family Advanced Class

Optimized for IoT devices, equipped with Ethernet and CAN controller

October 19, 2021

Toshiba Electronic Devices & Storage Corporation

Toshiba Releases New M4G Group of Arm® Cortex®-M4 Microcontrollers for High-speed Data Processing in the TXZ+TM Family Advanced Class

KAWASAKI, Japan - Toshiba Electronic Devices & Storage Corporation ("Toshiba") has started mass production of 20 new microcontrollers in the M4N group as new products in the TXZ+™ Family Advanced Class manufactured in a 40nm process. The M4N group includes an Arm Cortex-M4 core with FPU, running up to 200MHz, with an integrated maximum 2MB code flash and 32KB data flash memory with maximum 100K write cycle endurance. These microcontrollers also offer various interface and communications options, such as Ethernet, CAN and USB 2.0 FS OTG controller with integrated PHY. M4N group devices are suited for office equipment, building and factory automation, and Industrial networking and information management devices.

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

These devices support a variety of sensing applications with a high-speed, high-precision 12-bit analog/digital converter that allows individual sample hold times to be set for each AD input channel with up to 24 channels.

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

Documentation, sample software with an example of actual usage, and driver software that controls the interfaces for each peripheral can be downloaded from the Toshiba website. Evaluation boards and development environments are provided in cooperation with Arm global ecosystem partners.

Major features of new products

  • High performance Arm Cortex-M4 core with FPU, max 200MHz
  • Motor control functions and communication interfaces
  • Self-diagnosis functions for IEC60730 class B functional safety


Industrial networking and information management devices requiring Ethernet USB and CAN connectivity.
Printers, communications equipment for building and factory automation, IoT home appliances,
home security, smart meters etc.,


product group

M4N group

CPU core

Arm Cortex-M4
‒ memory protection unit (MPU)

‒ floating-point unit (FPU)

Max operation frequency


Internal oscillator




Flash (code)


(Rewritable up to 100,000 times)

Flash (data)

32KB (rewritable up to 100,000 times)


192KB/256KB and Backup RAM 2KB

I/O port

86 to 146

External interrupt

9 to 16

External bus interface

8/16bit width (separate/multiplexed bus)

DMA controller (DMAC)

Multi-function DMAC: 1 unit

High-speed DMAC: 2 units

Timer function


32-bit Timer Event Counter
(32 channels as 16-bit timers: 16 channels as 32-bit timers)


Long Term Timer: 1 channel


Real-time Clock: 1 channel




Asynchronous Serial Communication:

3 to 6 channels


Full Universal Asynchronous Receiver Transmitter: 1 to 2 channels


3 to 5 channels


Serial Peripheral Interface: 5 to 9 channels


Synchronous serial interface:

1 to 2 channels


Serial Memory Interface: 1 channel


1 channel


CAN controller: 2 units


Universal Serial Bus: 1 to 2 units

(USB 2.0 FS OTG controller with integrated PHY)


Ethernet controller (MII,RMII): 1 unit



12-bit AD converter

16 to 24 channel input

8-bit Digital to Analog converter

2 channels



Motor control (A-PMD)

1 channel


Remote Control Signal Preprocessor:

1 to 2 channels


Interval Sensor Detection Circuit:

1 to 3 units


2 channels


FIR calculation circuit: 1 channel




1 channel


Voltage Detection Circuit: 1 channel


Oscillation Frequency Detector: 1 channel

On-chip debug function

Serial Wire /JTAG

Operation voltage

2.7 to 3.6V, single voltage supply

Package / Pin

LQFP176 (20mm x 20mm, 0.4mm pitch)
VFBGA177 (13mm x 13mm, 0.8mm pitch)
LQFP144 (20mm x 20mm, 0.5mm pitch)
VFBGA145 (12mm x 12mm, 0.8mm pitch)
LQFP100 (14mm x 14mm, 0.5mm pitch)

See the URL below for further details on new products.

M4N Group

See the URL below for further details on Toshiba Microcontrollers.


* Arm and Cortex are registered trademarks of Arm limited (or its subsidiaries) in the US and/or elsewhere.

* TXZ+™ is a trademark of Toshiba Electronic Devices & Storage Corporation.

* Other company names, product names, and service names may be trademarks of their respective companies.

Customer Inquiries:

MCU & Digital Device Sales & Marketing Dept.

* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.