TOKYO — (BUSINESS WIRE) — March 11, 2015 — 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.
Toshiba: ARM(R) Cortex(R)-M3-based microcontroller "TMPM311CHDUG" for smart meters. (Photo: Business Wire)
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(∆Σ)-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 Products
-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.
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Specifications |
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| Part number | TMPM311CHDUG | |||
| Sample price (tax included) | 300 yen | |||
|
Main
specifications |
CPU | ARM® Cortex®-M3 | ||
| Maximum frequency | 20MHz | |||
| Internal memory | SRAM 21 Kbytes | |||
| Operating voltage | 2.7 to 3.6 V | |||
| 24-bit ∆Σ 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. |
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| 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 x 7mm, 0.5mm pitch) | |||
| Note |
DMA: Direct Memory Access
1 Kbyte is calculated as 1024 bytes. |
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