8-bit 80C51 CISC MCU, 33MHz, 40-Pin PDIP, ROMLess
8-bit 80C51 MCU, 33MHz, 5V, 32 I/O, ROMless, LCC
8-bit MCU, 80C51, 33MHz, 8KB OTP, 256B RAM, 32 I/O, DIP
