Intel 4040

Encyclopedia : I : IN : INT : Intel 4040

Intel D4040 Microprocessor

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), 8K 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.

Contents

1 New features
2 Extensions
3 Designers
4 New support chips

New features

Interrupt
Single Step

Extensions

Instruction Set expanded to 60 instructions
Program memory expanded to 8K bytes
Registers expanded to 24
Subroutine stack expanded to 7 levels deep

Designers

Ted Hoff, Federico Faggin, Stan Mazor, Masatoshi Shima

New support chips

4201 - Clock Generator 500 to 740 kHz using 4 to 5.185 MHz crystals
4308 - 1K byte ROM
4207 - General Purpose byte Output port
4209 - General Purpose byte Input port
4211 - General Purpose byte I/O port
4289 - Standard Memory Interface (replaces 4008/4009)
4702 - 256 byte UVEPROM
4316 - 2K byte ROM
4101 - 256 4-bit word RAM

**List of Intel microprocessors | List of Intel CPU slots, sockets**
Intel processors 4004 \| 4040 \| 8008 \| 8080 \| 8085 \| 8086 \| 8088 \| iAPX 432 \| 80186 \| 80188 \| 80286 \| 80386 \| 80486 \| i860 \| i960 \| Pentium \| Pentium Pro \| Pentium II \| Celeron \| Pentium III \| XScale \| Pentium 4 \| Pentium M \| Pentium D \| Pentium Extreme Edition \| Xeon \| Core \| Core 2 \| Itanium \| Itanium 2 (italics indicate non-x86 processors)

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.