MCUs’ sensor interface simplifies component count, cost and power

The newest members of the ML610Q4xx series of low-power microcontrollers from Lapis Semiconductor (formerly OKI Semiconductor) feature an RC-type analogue-to-digital converter (RC-ADC) that provides accurate (±1.0°C) temperature measurement using only passive components.

Picture: Lapis

RC-type ADCs simplify the external circuit and the software necessary to perform measurements and require less power than systems employing a separate ADC to convert the sensor input. The ML610Q4xx series offers versions with either FLASH memory or masked ROM to store the program that controls the display, user interface, communication ports and the taking of measurements. The newest members of the family feature in-circuit programmable FLASH which benefits designers by allowing on-chip, non-volatile data storage and the ability to make program changes in the field.
These devices are intended for battery-powered devices used for the measurement and display of temperature, humidity and carbon monoxide (CO) in industrial and commercial environments.
Development kits, evaluation boards, debug hardware and PC-based software development tools are available to facilitate the design of ML610Q4xx series-based products.

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