8-bit 80C51 MCU, 8KB EPROM, 33MHz, 44-Pin LQFP
8-bit 80C51 CISC MCU, 16KB EPROM, 33MHz, 44-Pin LQFP
8-bit 80C51 CISC MCU, 8KB EPROM, 44-Pin LQFP, 33MHz