{"id":706,"date":"2013-09-17T19:16:27","date_gmt":"2013-09-17T19:16:27","guid":{"rendered":"http:\/\/www.antiquetech.com\/?page_id=706"},"modified":"2013-09-17T19:35:51","modified_gmt":"2013-09-17T19:35:51","slug":"rca-cosmac-1805","status":"publish","type":"page","link":"http:\/\/www.antiquetech.com\/?page_id=706","title":{"rendered":"RCA COSMAC 1805"},"content":{"rendered":"

General<\/h2>\n\n\n\n\n\n
\n

General Information<\/b><\/p>\n<\/td>\n

\u00a0The COSMAC<\/a> 1805 was a ROM-less version of the 1804<\/a>. It’s primary use was for prototyping 1804 functions or for 1804 based systems with larger, external, memory requirements. It did include the 1804 RAM and Counter\/Timer.<\/span><\/td>\n<\/tr>\n
\n

Production<\/b><\/p>\n<\/td>\n

3rd Quarter 1981<\/span><\/td>\n<\/tr>\n
Designers<\/b><\/span><\/td>\nLead Designer: Joe Weisbecker, Team Lead: Jerry Herzog<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Architecture<\/h2>\n\n\n\n\n
Type<\/span><\/td>\nData Word<\/span><\/td>\nAddress Space<\/span><\/td>\nMax Clock<\/span><\/td>\nInstruct- ions<\/span><\/td>\nAssists<\/span><\/td>\nReg’s\u00a0 GP<\/span><\/td>\nReg’s Math<\/span><\/td>\nReg’s Index<\/span><\/td>\nIO Ports\u00a0\u00a0<\/span><\/td>\nStack<\/span><\/td>\nInterrupts<\/span><\/td>\nMemory<\/span><\/td>\n<\/tr>\n
MCU<\/a>,\u00a0 CMOS<\/a><\/span><\/td>\n8-bit<\/span><\/td>\n64K<\/span><\/td>\n4Mhz and 8Mhz<\/span><\/td>\n113<\/span><\/td>\nNA<\/span><\/td>\n16×16-bit or 32×8-bit<\/span><\/td>\n1<\/span><\/td>\nNA<\/span><\/td>\n8<\/span><\/td>\nExt RAM<\/span><\/td>\n1 Level<\/span><\/td>\n64B RAM<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Packages<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Chip Name<\/b><\/span><\/p>\n<\/td>\n

\n

Package<\/b><\/p>\n<\/td>\n

\n

On-Chip Identification<\/b><\/span><\/p>\n<\/td>\n

\n

Picture<\/b><\/span><\/p>\n<\/td>\n

\n

General Comments<\/b><\/p>\n<\/td>\n<\/tr>\n

CDP1805D<\/span><\/td>\nwhite ceramic, silver lid, 40 gold side braised pins<\/span><\/td>\nCDP1805D<\/span><\/td>\n<\/td>\nStandard operating range: 4V to10.5V. The ceramic “D” versions have an operating temperature range of -55o<\/sup> to 120o<\/sup>C<\/span><\/td>\n<\/tr>\n
CDP1805CD<\/span><\/td>\nwhite ceramic, silver lid, 40 gold side braised pins<\/span><\/td>\nCDP1805CD<\/span><\/td>\n<\/td>\n“C” suffix versions have a lower voltage range: 4V to 6.5V. Max clock is limited to 4Mhz.<\/span><\/td>\n<\/tr>\n
CDP1805AD<\/span><\/td>\nwhite ceramic, silver lid, 40 gold side braised pins<\/span><\/td>\nCDP1805AD<\/span><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CDP1805ACD<\/span><\/td>\nwhite ceramic, silver lid, 40 gold side braised pins<\/span><\/td>\nCDP1805ACD<\/span><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CDP1805E<\/span><\/td>\nblack plastic, 40 tin leads<\/span><\/td>\nCDP1805E<\/span><\/td>\n<\/td>\nThe plastic “E” versions have an operating temperature range of -40o<\/sup> to 85o<\/sup>C,\u00a0<\/span><\/td>\n<\/tr>\n
CDP1805CE<\/span><\/td>\nblack plastic, 40 tin leads<\/span><\/td>\nCDP1805CE<\/span><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CDP1805AE<\/span><\/td>\nblack plastic, 40 tin leads<\/span><\/td>\nCDP1805AE<\/span><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CDP1805ACE<\/span><\/td>\nblack plastic, 40 tin leads<\/span><\/td>\nCDP1805ACE<\/span><\/td>\n<\/td>\n<\/td>\n<\/tr>\n
CDP1805AQ<\/span><\/td>\nblack plastic QUIP, 44 tin leads<\/span><\/td>\nCDP1805AQ<\/span><\/td>\n<\/td>\nThe plastic QUIP “Q” versions have an operating temperature range of -40o<\/sup> to 85o<\/sup>C,\u00a0<\/span><\/td>\n<\/tr>\n
CDP1805ACQ<\/span><\/td>\nblack plastic QUIP, 44 tin leads<\/span><\/td>\nCDP1805ACQ<\/span><\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Related Chips<\/h2>\n\n\n\n\n\n
\n

Related Chips<\/b><\/p>\n<\/td>\n

\n

RCA 1801, RCA 1802, RCA 1804, RCA 1806<\/p>\n<\/td>\n<\/tr>\n

\n

Second Sources<\/b><\/span><\/p>\n<\/td>\n

\n

None<\/span><\/p>\n<\/td>\n<\/tr>\n

Support Chips<\/b><\/span><\/td>\n1852<\/b> (8-bit I\/O Port), 1854<\/b> (UART), 1856 (4-bit memory buffer), 1857<\/b> (4-bit I\/O buffer)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

General General Information \u00a0The COSMAC 1805 was a ROM-less version of the 1804. It’s primary use was for prototyping 1804 functions or for 1804 based systems with larger, external, memory requirements. It did include the 1804 RAM and Counter\/Timer. Production 3rd Quarter 1981 Designers Lead Designer: Joe Weisbecker, Team Lead: Jerry Herzog Architecture Type Data … <\/p>\n

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