AT80C51RD2-3CSUM IC MCU 8BIT ROMLESS 40PDIL

AT89S51-24JU Microcontroller 8051 Flash: 4kx8bit Static RAM: 128B Interface: UAR

Atmel AT89C1051-12PC 8-Bit Microcontroller 20pin DIP 6pcs

AT89C55WD-24JU Microcontroller 8051 Flash: 20kx8bit Static RAM: 256B Interface:

Atmel AT89C51RC-24AU-TW (8051,8031) Flash microcontroller QFP44

AT89C5131A-RDTUM Microcontroller 8051 Static RAM: 256B Interface: I2CSPIUART VQF

AT89S52-24JU Microcontroller 8051 Flash: 8kx8bit Static RAM: 256B Interface: UAR

AT89C55WD-24AU Microcontroller 8051 Static RAM: 256B Interface: UART 4-55VDC MIC