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Intel 4040
From Wikipedia, the free encyclopedia
| Intel 4040 Central processing unit |
|
 An Intel D4040 Microprocessor |
|
| Produced: | 1974 |
| Manufacturer: | Intel |
| Instruction Set: | pre x86 |
| Socket: | 24 pin DIP |
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.
Contents |
- Interrupt
- Single Step
- Instruction Set expanded to 60 instructions
- Program memory expanded to 8 KiB
- Registers expanded to 24
- Subroutine stack expanded to 7 levels deep
Federico Faggin proposed the project, formulated the architecture and led the design. The detailed design was done by Tom Innes.
- 4201 - Clock Generator 500 to 740 kHz using 4 to 5.185 MHz crystals
- 4308 - 1 KiB 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 - 2 KiB ROM
- 4101 - 256 4-bit word RAM
4001-2048-bit (256 x 8) ROM w/4-bit I/O Port
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
4801-5.185 MHz Clock Generator Crystal for 4004_4201A or 4040/4201A CPU Set
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