2114
The 2114 is a static RAM with a storage capacity of 4096 bits , organized as 1024 × 4 bits. The module is supplied in an 18-pin DIL housing . He will u. a. produced by Seiko / Epson , United Microelectronics , Intel , AMD , Hitachi , Motorola , NEC and Siemens . The combine microelectronics Erfurt presented the 2114 under the name U 214 D forth. The access times are between 100 and 300 nanoseconds , depending on the design .
The chip was used in the 1970s and 1980s a. a. as main memory in various single-board computers and home computers , such as the VIC-20 , or as video memory for color information (e.g. the Commodore 64 , where actually only 4 bits are sufficient for the color value). Although the capacity is low, the advantage of this chip is that no complex refresh logic is necessary and a simple circuit structure is therefore possible. There is also the advantage that it can be read out quickly, regardless of the fact that certain waiting times have to be observed.
Literature and data sheets
- Microcomputer modules, data book 1979/80, volume 2, memory, Siemens AG, order number B 2048, pp. 120-127.
- NEC Electronics (Europe) GmbH, 1982 Catalog, pp. 43-46.
- https://www.datasheetarchive.com/2114%20SRAM-datasheet.html#content
Web links
- 1kx4 Static RAM 2114
- 2114A - 1024x4 bit Static RAM (archive.org)