Claimed to be the lowest cost microcontroller with an integrated LCD controller, the AFE4110 is from Texas Instruments. It is based on the company's MSP430 low power core and delivers 16bit processing power for consumer medical and home healthcare applications, including heart rate and fitness monitoring systems, blood glucose and other diagnostic meters, blood pressure monitors, and digital thermometers. It also has a 16kbyte ROM, 512byte RAM and a 4- x 12-segment LCD driver with charge pump. The microcontroller draws a low active current of 50µA/MHz and sleep mode current of less than 0.3µA. The integrated LCD and 0.3% accuracy oscillator eliminate the need for an external crystal. Other cost-savings are made by operation on a single, low-cost, 1.5V battery. The microcontroller is in a 2.7mm die.
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