16-bit micro family targets smart meters

3rd February 2015

Mick Elliott

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Datasheet

The MSP430i202x Mixed Signal Microcontroller Family from Texas Instruments is on sale at Mouser Electronics. This low power 16MHz 16‑bit RISC microcontroller has up to four 24‑bit sigma‑delta analogue‑to‑digital converters (ADCs) with differential programmable gain amplifier (PGA) Inputs. Additional features include a hardware multiplier, 75nA shutdown mode, and a temperature sensor.

The 24‑bit sigma‑delta ADCs are based on 2^nd order, over‑sampling sigma‑delta modulators and digital decimation filters. The decimation filters are comb‑type filters with selectable oversampling ratios of up to 256. This results in ADCs that have a high degree of resolution with a high degree of accuracy.

This microcontroller family comes with up to 32KBytes of Flash and up to 2KBytes of RAM. This MSP430 microcontroller is configured with two 16‑bit timers with three capture/compare registers each, a 1.8V low dropout regulator, a brownout detector, and two enhanced universal serial communication interfaces.

A 16x16 hardware multiplier supports signed and unsigned multiply, as well as signed and unsigned multiply accumulate.

The MSP430 microcontroller is built for low‑power applications. This microcontroller family features several low‑power modes including Active Mode current of 275µA/MHz at 16.384MHz, a Standby Mode with the watchdog timer active of 210 µA, an Off Mode with full RAM retention of 70µA, and a lowest-power Shutdown Mode of just 75nA with a wakeup from Standby in only 1µsec.

Target applications include smart meters, power monitoring and control, and precision sensors.