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The Intel 4040 was the successor to the Intel 4004. It was introduced in 1974.
New features
Extensions
- Instruction Set expanded to 60 instructions
- Program memory expanded to 8K bytes
- Registers expanded to 24
- Subroutine stack expanded to 7 levels deep
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
- 4002 - 320 bit (80 x 4) RAM and 4 discrete Outputs
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