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Toshiba Expands Line-up of ARM® Cortex®-M3-based Microcontroller for Smart Meters

March 11, 2015

product photo:"TMPM311CHDUG"

TOKYO – Toshiba Corporation (TOKYO: 6502) today announced the launch of a new microcontroller, "TMPM311CHDUG", as the latest addition to its ARM® Cortex®-M3-based TX03 series. The microcontroller is designed for smart meter applications. Sample shipments will start in April, with mass production scheduled to start in September, 2015.
 

A power measurement analog front-end (AFE) for single-phase and three-phase smart meters requires simultaneous high-precision current measurement, voltage measurement and power calculation. A 24-bit delta-sigma(ΔΣ)-type AD converter incorporated in the new product enables high-precision current measurement, voltage measurement and power calculation at the same time. This ensures the realization of high-end smart meters.
 

Applications

  • Smart meters
  • Measuring equipment

Key Features of New Product

  • Built-in four-channel 24-bit ΔΣ-type AD converter: Measures current and voltage simultaneously, with high precision. The allowance for measurement error of single-phase power calculation is within 0.1 %.
  • Three-phase power meter solution: Simultaneous current and voltage measurement for up to eight channels is supported by using two units of the microcontroller in an interlocking manner.
  • Built-in low-noise variable gain amplifier in each conversion channel of the 24-bit ΔΣ-type AD converter: Enables high-precision measurement for current from a current sensor. This supports both power calculation meter and various sensor equipment.
  • Built-in temperature sensor: Enables various temperature corrections.
  • In combination with "TMPM411F20", which incorporates two Cortex-M4F cores and performs measurement and communication controls on one chip, and enables tamper detection in the power failure and interrupt detection for measurement and communications at super-low power consumption, "TMPM311CHDUG" can realize a smart meter system that integrates measurement and communication on a board.

Specifications

Part number TMPM311CHDUG
Sample price (tax included) 300 yen

Main

specifications

CPU ARM® Cortex®-M3
Maximum frequency 24MHz
Internal memory SRAM 21 Kbytes
Operating voltage 2.7 to 3.6V
24-bit ΔΣ AD converter

4 ch

  • Built-in variable gain amplifier for each channel
    Variable gain: x1, x2, x4, x8, x16
  • 1 channel is also used as an input of the internal temperature sensor.
µDMA controller 1 unit
16-bit timer 5 ch
Interrupt input 2 ch
SSP 1 ch
SIO/UART 1 ch
Temperature sensor 1 ch
Package LQFP48 (7mm × 7mm, 0.5mm pitch)
Note DMA: Direct Memory Access
1 Kbyte is calculated as 1024 bytes.
For more information about Toshiba ARM core-based microcontrollers, please visit:

http://toshiba.semicon-storage.com/ap-en/product/microcomputer/lineup/arm-micon.html

* ARM and Cortex are registered trademarks of ARM Limited (or its subsidiaries) in the EU and/or elsewhere.

Customer Inquiries:

Mixed Signal IC Sales and Marketing Department

Tel: +81-44-548-2241

http://toshiba.semicon-storage.com/ap-en/contact.html

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.

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