Low-power 16-bit MCUs have 24-bit A/Ds

Targeting utility metering applications, the MSP430AFE2xx series (MSP430AFE221 to MSP430AFE253) low-power 16-bit MCUs have a single-phase metrology analog front end (AFE) that supports 0.1% accuracy over a wide 2,400:1 dynamic range. The devices have up to three 24-bit sigma-delta A/D converters along with up to 16 Kbytes of flash and 512 bytes of RAM.

The nine versions of the device have SPI and UART interfaces, a 16-bit timers/PWMs, a watchdog, and a hardware multiplier. They operate at 1.8 to 3.6 V at up to 12 MHz and take only 220 μA at 1 MHz, 2.2 V. Standby mode takes just 0.5 μA. (From $0.80 ea/1,000 — available now.)

By Jim Harrison

Texas Instruments , Dallas , TX
Information 800-477-8924
www.ti.com