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Intel 4040 Developer Intel Introduction date 1974 Model 4040 Transistors 3,000 Cores 1 Clock 740 KHz Bus Width 4-bit Lithography 10μm Max TDP 0.63 W Memory Specs Max Memory 8KB (program) Packaging Package 24-pin DIP 24-pin CDIP

The Intel 4040 (i4040) is a 4-bit microprocessor introduced in 1974 by Intel as a successor to the Intel 4004. The 4040, fabricated using pMOST technology, introduced a small set of additional instructions, a larger call stack, a larger register file, and interrupt capabilities. The package size was also increased to 24 pins. The 4040 is part of the Intel MCS-40 chipset.

The Intel 4040 was used in a large number of early video games and gaming machines such as the Bailey shuffleboard.

Overview

Following the success of the Intel 4004, Intel released the 4040, an enhanced version. The new chip included a much larger stack (7 levels instead of 4). The 4040 also introduced interrupt support. 14 new instructions were added and the register file was increased to 24 index registers.

External links

• i4040 Datasheet