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fer @ fer . nu
4002
Introduction
date:
1971
Type:
320-bit MOS RAM and 4-bit output port.
Memory:
80 x 4-bit
Technology:
P-channel
silicon gate MOS technology
Number of transistors:
History:
The 4002 was designed to be used with
other MCS-4/40 devices such as the 4004 CPU.
The chip was available in two different metal options 4002-1 and 4002-2 this
was to make it possible to extend the chip selection so that 4pcs of 4002
chips could be connected to the 4004 CPU without any external chip selection
logic.
Second source:
National Semiconductors was the only
second source.