The document details the specifications for the TMS27C128 series (UV erasable) and TMS27PC128 series (one-time programmable) 131072-bit read-only memories. These devices utilize power-saving CMOS technology, offering high speed and simple interface compatibility with MOS and bipolar circuits. They are pin-compatible with existing 128K MOS ROMs, PROMs, and EPROMs.
| Organization | 16K x 8 |
|---|---|
| Power Supply (Read) | Single 5-V |
| Technology | CMOS |
| Access Time (27C128-12) | 120 ns |
| Access Time (27C/PC128-15) | 150 ns |
| Active Power Dissipation | 158 mW Worst Case |
| Standby Power Dissipation | 1.4 mW Worst Case |
It is erased by exposing the chip through a transparent lid to high intensity ultraviolet light.
No, logic lows programmed into this PROM cannot be erased.
The SNAP! Pulse programming algorithm uses a nominal programming time of two seconds.