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4040
D4040
General Info
Designer	Intel
Manufacturer	Intel
Model Number	4040
Part Number	C4040, D4040, P4040
Introduction	1974 (launched)
Shop	Amazon
General Specs
Family	MCS-40
Frequency	740 kHz
Microarchitecture
Process	10 μm
Transistors	3,000
Word Size	4 bit
Cores	1
Max Memory	8 KiB
Electrical
Power dissipation	630 mW

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

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