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Toshiba couples analog front end for smart meters with Cortex-M3

D

Don Dingee

Moderator
View attachment 13581Measuring power use for a three-phase smart meter needs several channels of current and voltage measurement, plus power calculations. Toshiba's new TMPM311CHDUG microcontroller features a four-channel, 24-bit delta-sigma A/D converter. Each channel has a low-noise variable gain amplifier, forming a inexpensive but accurate analog front end (AFE).

A 24 MHz ARM Cortex-M3 core with 21 KB of SRAM provides the computations. Peripherals include one UART/SIO, 5 timers, and 23 GPIO pins. The part is packaged in a 48-pin QFP, and is currently sampling.

Press release:

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