Toshiba's Arm® Cortex®-M Core-Based Microcontrollers Support Mbed™ OS

Toshiba: A microcontroller "TMPM066FWUG" supporting Arm Mbed OS and Mbed evaluation board "AdBun-M066" made by sensyst. (Photo: Business Wire)

TOKYO--()--Toshiba Electronic Devices & Storage Corporation (“Toshiba”), as a Silicon Partner of Mbed (a device management solution for IoT platforms developed by Arm Ltd), acquired the certification of Mbed OS for its microcontrollers. Two evaluation boards that integrate these microcontrollers have been released on the Arm Mbed site.

Mbed provides developers with a free, easy-to-use development environment. The online compiler provided by Arm can be used with evaluation boards supporting Mbed OS, and device programming can be performed with drag-and-drop simplicity on a host PC connected to the boards via USB. Developers can also access the rich component libraries verified by the Mbed community, allowing fast and efficient development of applications for embedded devices.

The Arm Mbed Device Connector service provides connectivity with the Mbed Cloud, facilitating easy configuration of web services.

Among the Toshiba group companies, Toshiba Digital Solutions Corporation is working on strengthening device security of IoT equipment as an Mbed Cloud lead partner. As Toshiba microcontrollers now support Mbed OS, the Toshiba group can propose and deliver total solutions for secure IoT systems covering clouds to devices.

Toshiba will be expanding products supporting Mbed OS with Mbed ecosystem partners.

Main features of microcontrollers supporting Mbed OS

  • Support for numerous applications with Cortex-M0 and Cortex-M4 based microcontrollers
    TX00 general-purpose microcontrollers with USB support function and TX04 microcontrollers with security function extend product choices.
  • Support for a wide range of applications via Arduino-compatible connector
    Applications can be developed quickly by connecting to a commercially available ArduinoShield board.
  • Support for IoT applications via Mbed
    Using Mbed Cloud allows secure connection with web services.

Outline and main specifications of microcontrollers supporting Mbed OS


Product 1

Part Number   TMPM066FWUG (in mass production)


  CPU ARM® Cortex®-M0
Maximum frequency 24 MHz
Built-in memory 128 Kbyte Flash, 16 Kbyte SRAM
Operating voltage 1.8 to 3.6 V
DMA 28 channels (1 unit)
USB 1 channel (full-speed device)
10-bit ADC 8 channels
UART/SIO 2 channels
I2C 2 channels
16-bit Timer 10 channels
High resolution PPG 1 unit, 4 outputs
External interrupt pin 6 pins
TSPI 1 channel
  Package   LQFP64 (10 mm x 10 mm, 0.5 mm pitch)

Product 2

Part number   TMPM46BF10FG (in mass production)


  CPU ARM® Cortex®-M4F
Maximum frequency 120 MHz
Built-in memory 1024 Kbyte Flash, 513 Kbyte SRAM
Operating voltage 2.7 to 3.6 V
12-bit ADC 8 channels
DMA 32 channels (3 units)
16-bit Timer 8 channels
Interrupt input 16 channels
Clock-independent WDT 1 unit
SSP 3 channels
SIO/UART 4 channels
Full UART 2 channels
I2C 3 channels
SLC NAND Flash controller 1 unit

Advanced Encryption
Standard (AES)

1 unit

Hash function generator

1 unit

Random number seed
generator (ESG)

1 unit

Multiple-length arithmetic
circuit (MLA)

1 unit
  Package   LQFP100

(14 mm x 14 mm, 0.5 mm pitch)


* DMA: Direct Memory Access
* 1 Kbyte is calculated as 1024 bytes

For details of Mbed enabled microcontrollers, visit the following websites.

Mbed evaluation boards

The Mbed evaluation boards for each microcontroller are provided by sensyst, as AdBun series products, as follows:

Mbed products   Mbed evaluation board (sensyst product name)
TMPM066FWUG AdBun-M066
TMPM46BF10FG   AdBun-M46B

Each board is available from Chip 1 Stop. For details of the board specifications, refer to the following Chip 1 Stop website at:

For details of Arm Mbed, visit Arm’s Mbed website at:

* Arm and Cortex are registered trademarks of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
* Mbed is a trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
* Arduino is a trademark of Arduino AG.

Customer Inquiries
Mixed Signal IC Sales and Marketing Department
Tel: +81-44-548-2241

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

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation combines the vigor of a new company with the wisdom of experience. Since becoming an independent company in July 2017, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Our 19,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 700-billion yen (US$6 billion) and to contributing to a better future for people everywhere.
Find out more about us at


Media Inquiries
Toshiba Electronic Devices & Storage Corporation
Chiaki Nagasawa, +81-3-3457-4963
Digital Marketing Department

Release Summary

Arm Mbed evaluation boards that integrate Toshiba microcontrollers supporting Arm Mbed OS have been released on the Arm Mbed site.


Media Inquiries
Toshiba Electronic Devices & Storage Corporation
Chiaki Nagasawa, +81-3-3457-4963
Digital Marketing Department