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The Intel 4040 microprocessor was the successor to the Intel 4004. It was introduced in 1974. The 4040 was used primarily in games, test, development, and control equipment. The package of the 4040 is more than twice as wide as the 4004 and has 24 pins vs. the 16 of the 4004. The 4040 added 14 instructions, larger stack (8 level), 8 kiB program space, 8 more registers, and interrupt abilities (including shadows of the first 8 registers). The 4040 family is also referred to as the MCS-40.
New features Extensions Designers Ted Hoff, Federico Faggin, Stan Mazor, Masatoshi Shima New support chips MCS-40 Family Data Sheet By Someone 4001-2048-bit (256 x 8) ROM w/4-bit I/O Port 4201-4MHz Clock Generator 4207/4209/4211-General Purpose Byte Input Port 4265-Programmable General Purpose I/O Device 4269-Programmable Keyboard Display Device 4289-Standard Memory Interface for MCS-4/40 4308-8192-bit (1024 x 8) ROM w 4-bit IO Ports 4316-16384-bit (2048 x 8) Static ROM 4702-2048-bit (256 x 8) EPROM 4801-5.185 MHz Clock Generator Crystal for 4004_4201A or 4040/4201A CPU Set | |||||||||||||||||||||||||||
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