MITSUBISHI MICROCOMPUTERS M37221EF-XXXSP,M37221EF.
Mitsubishi Electric Semiconductor
M37221EFSP - SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS M37221EF-XXXSP,M37221EFSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER D.
