| Компонент | Описание | Производитель | |
| P4C422-20PC | HIGH SPEED 256 x 4 STATIC CMOS RAM |
Pyramid Semiconductor Corporation |
|
| P4C422-20PM | HIGH SPEED 256 x 4 STATIC CMOS RAM |
Pyramid Semiconductor Corporation |
|
| P4C422-20PMB | HIGH SPEED 256 x 4 STATIC CMOS RAM |
Pyramid Semiconductor Corporation |