MSM80C85A-HR3 – OKI

The MSM80C85A-HR3 is a CMOS 8-bit microprocessor manufactured by OKI Semiconductor. This device is a pin-compatible, low-power version of the industry-standard 8085A microprocessor. The “07” marking indicates the year of manufacture (2007). The RoHS designation signifies compliance with the Restriction of Hazardous Substances directive, indicating the absence of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE) above specified threshold levels. The device operates from a single +5V power supply and incorporates multiplexed address and data buses. Interrupt handling includes vectored interrupts and a serial I/O port. The “523382” marking is likely a lot or date code used for internal traceability within OKI’s manufacturing processes. The device is intended for embedded control applications where low power consumption and RoHS compliance are critical requirements.