This document is a specification sheet for the 128Kx8 bit high-speed CMOS static RAM produced by SAMSUNG Electronics. This RAM is suitable for commercial and industrial temperature ranges. It features fast access time, low power dissipation, single 5.0V±10% power supply, TTL compatible inputs and outputs, etc.
The KM681002C/CL (and KM681002CI/CLI) is a 128 K × 8‑bit high‑speed CMOS static RAM designed for commercial and industrial temperature ranges. It is offered in 32‑pin SOJ‑400 and 32‑pin TSOP2‑400CF packages and features TTL‑compatible I/O, three‑state outputs, and fully static operation without a clock or refresh.
Key specifications include fast access times of 10 ns to 20 ns, low power consumption (standby 5 mA CMOS, 30 mA TTL), a supply voltage of 4.5 V–5.5 V (typical 5 V), and operation from –40 °C to 85 °C (industrial) or up to 70 °C (commercial). The datasheet also provides detailed pin assignments, absolute maximum ratings, timing diagrams for read and write cycles, and data‑retention characteristics.
| Memory capacity | 128 K × 8 bits |
|---|---|
| Access time | 10 ns – 20 ns (max) |
| Supply voltage | 4.5 V – 5.5 V (typical 5 V) |
| Power dissipation | 1 W |
| Storage temperature range | -65 °C to 150 °C |
| Operating temperature (commercial) | 0 °C to 70 °C |
| Operating temperature (industrial) | -40 °C to 85 °C |
| Package types | 32‑SOJ‑400, 32‑TSOP2‑400CF |
The device offers fast access times of 10 ns, 12 ns, 15 ns, or 20 ns (maximum).
It operates from 4.5 V to 5.5 V, with a typical value of 5 V.
Commercial temperature range is up to 70 °C, while the industrial range is –40 °C to 85 °C.
It is offered in a 32‑pin SOJ‑400 package and a 32‑pin TSOP2‑400CF package.