8-Bit 8051 Core Microcontroller, 18MHz, 256B RAM, TSSOP-20, Lead Free
80C51 8-Bit Microcontroller, 18MHz, 4KB FLASH, 256B RAM, TSSOP
20-Pin TSSOP 80C51 CISC Microcontroller with 2 Timers and 18 I/Os
P89LPC920/921/922/9221 - 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM TSSOP2 20-Pin
P89LPC921FDH(PROG)