8-Bit MCU, 4MHz, 20 I/O, 512B OTP, SSOP, RS-232
8-Bit RISC MCU, 20MHz, EPROM, PDIP-28, RS-232
8-Bit RISC MCU, 4MHz, OTP, PDIP-28
8-Bit RISC MCU, 4MHz, OTP, SOIC, 20 I/O
