8-bit OTPROM MCU in a PDIP40 — what you're working with
The Texas Instruments TMS370C792N2T is an 8-bit microcontroller from the TMS370 family, built around an OTPROM program memory and running at 5 MHz. It comes in a 40-pin PDIP package — the through-hole format that still populates legacy control boards, industrial timers, and single-function embedded controllers where a surface-mount reflow step isn't justified. The OTPROM means the firmware is factory-programmed and locked; no field updates, no reflash. That makes this part a fit for production runs where the code is finalised before assembly, not for prototyping or iterative development.
Lifecycle — still active, no LTB clock
The TMS370C792N2T product status is Active. No last-time-buy notice or end-of-life window is in effect.
