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The Intel 4040
General
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General Information
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The 4040 is an enhanced
follow-on processor to the Intel 4004.
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.
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Production
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4 Qtr, 1974
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| Designers |
Ted Hoff, Federico Faggin, Stan Mazor, Masatoshi
Shima |
Architecture
| Type |
Data Word |
Address Space |
Clock |
Instruct- ions |
Assists |
Reg's GP |
Reg's Math |
Reg's Index |
IO Ports |
Stack |
Interrupts |
Memory |
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PMOS,
CPU
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4-bit |
8Kb of program,
5Kb of data |
740kHz,
2 Phase |
60 |
BCD |
0 |
1 |
24 4-bit |
NA |
8x12 |
NA |
NA |
Packages
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Chip Name |
Package
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On-Chip Identification |
Picture |
General Comments
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C4040
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White/Gold CerDIP, 24-pin
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C4040 |
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D4040
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Gray Ceramic, 24-pin DIP
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D4040 |
 |
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P4040
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Black Resin, 24-pin DIP
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P4040 |
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Related Chips
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Related Chips
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Intel 4004
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Second Sources |
None |
| Support Chips |
MCS-4 Chips
4001 (ROM), 4002-1 (RAM),
4002-2 (RAM), 4003 (Shift)
4008 (EPROM Interface), 4009
(EPROM Interface)
MCS-40 Chips
4201 (Clock, Avail 1Q/75), 4207
(I/O), 4209 (I/O), 4211 (I/O), 4265, 4269, 4289 (System Memory Interface), 4308 (1K ROM)
Supplemental
Chips 4702 (EEPROM), (4316 2K
ROM), 4101 (128K RAM), 3216/3226 (4-bit Bus Driver) |
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