P80C31BH 80C31BH Intel CHMOS 8-Bit Microcontroller IC 8031 MCU 40-DIP

SCN8031HCFN40 SCN8031 Philips ROMless 8-Bit Microcontroller 128B RAM 32 IO DIP40

Intel P8039AHL HMOS 8-Bit Single-Chip Microcontroller ROMless 128x8bit RAM DIP40

W78E51B-40 Winbond 8051 Microcontroller 4KB MTP ROM 128B RAM 40MHz DIP-40

P87C51FA DIP-40 Intel 80C51 8-bit microcontroller family

10 piece set AT89S52-24PU Direct plug-in DIP40 8-bit flash microcontroller

Philips MAB8031AH 12P 8 BIT Microcontroller / Microprocessor RS 631-654 DIP40

5 PCS W78E052DDG DIP-40 W78E052 DDG 8-Bit Microcontroller Chip IC