The best replacement for microcontroller is microprocessor.

The best alternatives to microcontroller are rated as following:

★★★★★	microprocessor
★★★★	fpga
★★★★	plc
★★	microcomputer
★★	dsp
★	arduino
★	integrated circuit
★	microprocessor ppt
★	asic
★	processor
★	soc
★	microprocessor pdf
	pic
	single board computer
	micro controller
	general purpose microprocessor
	system on chip
	cpld
	microprocessors

Your alternative for microcontroller is not listed? Suggest!

Speaking about microcontroller, one probably shouldn't forget about ethernet.

Other search terms related to microcontroller and their ratings are:

★★★★★	ethernet
★★★	adc
★★★	lcd display
★★	accelerometer
★★	can bus
★★	pwm
★	fpga
★	rtc
★	zigbee
★	real time clock
★	interrupts
★	fast adc
	lcd driver
	regulator
	temperature sensor
	usb interface
	uart
	dsp

You have in mind a companion for microcontroller and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of microcontroller in all years. Click on graph for more.

microcontroller

microprocessor

fpga