This document is a technical manual for AMD's 128KB EPROM, which introduces the features and characteristics of this product.
The Am27C128 is a 128‑kilobit ultraviolet‑erasable programmable read‑only memory organized as 16 K × 8 bits. It operates from a single +5 V supply, offers fast access times as low as 45 ns, low power consumption, and both CMOS and TTL I/O compatibility. The device is available in 28‑pin ceramic DIP, 28‑pin plastic DIP, and 32‑pin PLCC packages.
The handbook includes detailed electrical characteristics, absolute maximum ratings, programming procedures (Flashrite algorithm), erasure instructions, and mechanical dimensions. Ordering information, temperature ranges for commercial, industrial, and extended grades, as well as a mode‑select table are also provided.
| Access time (fastest option) | 45 ns |
|---|---|
| Typical programming time | 2 s |
| Active power consumption | 80 mW |
| Supply voltage (+5% tolerance) | 4.75 V – 5.25 V |
| Package types | 28‑Pin Ceramic DIP, 28‑Pin Plastic DIP, 32‑Pin PLCC |
| Industrial temperature range | -40 °C to +85 °C |
| Extended temperature range | -55 °C to +125 °C |
The typical programming time is about 2 seconds.
For devices with a +5 % tolerance the supply voltage must be between 4.75 V and 5.25 V.