General
|
General Information |
The F8 was Fairchild’s 1st processor. It was targeted as an inexpensive processor for service and control applications (gas pumps, vending machines, cash registers. It included 64 bytes of “scratchpad” RAM to enable two chip implementations (2nd chip being a ROM such as the 3851). |
|
Production |
1st Quarter 1975 |
| Designers | Unknown |
Architecture
| Type | Data Word | Address Space | Clock | Instruct- ions | Assists | Registers GP | Registers Math | Registers Index | IO Ports | Stack | Interrupts | Memory |
| NMOS,
|
8-bit | 64K | 2Mhz | 71 | BCD | 64 | 1 | 2 | 2 x 8-bit | 33 x 16 | Vectored, 1 level | 64 bytes RAM |
Packages
|
Chip Name |
Package |
On-Chip Identification |
Picture |
Comments |
|
F3850-1DC |
White/Gold CerDIP, 40-pin |
38501DC |
 |
|
|
F3850DC |
Gray Ceramic, 40-pin |
3850DC |
 |
|
|
F3850P |
Black Resin, 40-pin |
3850P |
 |
|
|
F3850PC |
Black Resin, 40-pin |
3850PC |
 |
Related Chips
|
Related Chips |
Fairchild 3859, Mostek 3870 |
|
Second Sources |
Mostek |
| Support Chips | 3851(1K)/3856(2K)/3857(2K) (ROM/Program Storage Unit), 3852/3853 (Memory Interface), 3854 (DMA), 3861 (PIO), 3852 (DMI), 3853 (Static Memory Interface), |