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You can use any uC. It should have One external interrupt input pin, 12 digital I?O pins for motors. 3 wires for each motor.
If you control the speed of motors using PWM then you need PWM channels. I think 887 has 2 PWM channels but if all the 4 motors maintain same speed then you can use one or both PWM channels to control the speed, but if you need to have different speed for each motor then you need 4 PWM channels.
If PWM is needed then depending upon no. of PWM channels you need to decide the uC.