The R7FA4M1AB3CNB from Renesas is a Space Qualified Microcontroller with Clock Rate 15 kHz to 20 MHz, Operating Frequency 48 MHz, Internal RAM Memory SRAM : 16 to 32 kB, Flash Memory Code : 256 kB, Data : 8 kB, Supply Voltage 1.6 to 5.5 V. Tags: Surface Mount. More details for R7FA4M1AB3CNB can be seen below.