Toshiba America Electronic Components (TAEC) has announced the TMPM061, a new 32-bit ARM Cortex-M0 MCU specifically designed for smart metering applications. This new micro-controller provides a single chip solution for smart meters, eliminating the need for the two-chip approach with an analog front end (AFE) and a MCU, delivering a smaller footprint and lower costs.
In order to simplify smart meter power measurement, the TMPM061 features an onboard power calculation engine that can calculate active energy, reactive energy and power factor as well as monitoring voltage and frequency fluctuation. In addition, the TMPM061 features up to 128KB on-chip Flash ROM and 8KB on-chip RAM, as well as on-board peripherals including:
- 3-channel 24-bit Delta-Sigma analog-to-digital converter (ADC) supporting sampling up to 6 kHz
- 10-bit ADC
- Temperature-compensated real-time clock (RTC).
- 9-channel 16-bit timer
- LCD display controller
- Temperature sensor
- Voltage detection circuit
- Watchdog timer
- 5-channel general-purpose serial interface
- Serial bus interface (I2C bus mode or synchronous mode operation).
The TMPM061FWFG comes in a 14 x 14mm 100-pin LQFP package and will operate with input voltages from 1.8V to 3.6V, with a maximum operating frequency of 16MHz. There are 4 standby modes (IDLE, SLOW, SLEEP, STOP) in order to ensure minimum power consumption.
Toshiba TMPM061 samples will be available starting in August 2012, and mass production scheduled for December 2012. The MCU will cost 3.50 USD in small quantities. Toshiba has not setup a page for their new (and first) Cortex M0 MCU, but it should show up on Toshiba MCU page in due time.