The Intel YW87C196KC20 is a 16-bit MCS 96 microcontroller in an 80-QFP package, clocked at 20 MHz with 16 KB of OTP program memory and 488 x 8 bytes of RAM. It integrates an 8-channel 10-bit ADC, PWM and watchdog timer peripherals, plus a serial I/O interface — a single-chip control solution for motor drives, industrial pumps, and power-conversion stages where firmware is factory-locked and never field-updated.
The 16 KB OTP (one-time programmable) memory means the firmware mask is burned during production and cannot be changed afterward. This is the defining BOM constraint: every firmware revision requires a new mask and a new device order code. If your design needs field-reprogrammability or iterative firmware tuning, the ROMless TN80C196KC20 paired with external Flash is the alternative — but that trades PCB area and BOM count for flexibility.
The 20 MHz clock drives the MCS 96 pipeline. The integrated PWM and WDT peripherals handle a closed-loop control loop without external timers.
Listed as Active, so no formal last-time-buy has been issued. However, OTP mask variants like this one have finite production windows — the mask ROM process is specific to a fab line, and Intel (now part of the broader legacy portfolio) may not run it indefinitely. The 87C series is a mature 16-bit architecture; for production continuity, verify mask availability with your factory contact before freezing the BOM.