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Electronic Design

MCU Targets Ultra-Low-Power Apps

Featuring 256 bytes of RAM, the 16-bit MSP430F42x0 series microcontrollers (MCUs) from Texas Instruments typically draw 1.1 uA in real-time clock standby mode and 300 uA in active mode. Flash programming of the 32-kbyte memory only requires 2.5 V, making it ideal for battery operation in devices like altimeters and portable instrumentation. The chip incorporates an LCD interface and charge pump to minimize the system's bill of materials. Other peripherals include a five-channel, 15-bit analog-to-digital converter (ADC) with a programmable gain, a 12-bit digital-to-analog converter (DAC) with a 1-µs settling time, 32 GPIO, and an on-chip oscillator. Pricing starts at $2.95.

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