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.
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.