![]() ![]() A replacement Dallas module does not work. A battery rework of the Dallas module does not work. Once the battery in the Dallas module gets too low, there is no fix. See thread 59447 at the Vintage Computer ForumsĬan be replaced with DS12887A+. The data sheet for the DS12887 specifically indicates, " Drop–in replacement for IBM AT computer" See thread 55621 at the Vintage Computer Forums (in that, posts #24 and #25). See here.Ĭannot be replaced with DS12887. Some (repeat:some) known compatibility/incompatibilityĬannot be replaced with DS12887. RTC Module (Dallas Semiconductor, et al) FAQ Some documents that discuss some known substitution problems The three documents below discuss some known substitution problems. Wir haften nicht für Verluste oder Schäden, die durch die oben genannten Informationen verursacht werden.Although Dallas and others made newer model RTC modules that can be used as substitutes for obsolete RTC modules (such as the DS1287), you cannot always use the new model RTC modules as a 'drop-in' substitute. *Diese Informationen dienen nur zu allgemeinen Informationszwecken. Mit dem Fokus auf Energieeffizienz und Nachhaltigkeit stehen die integrierten Maxim-Produkte an der Spitze der Halbleiterindustrie und treiben technologische Fortschritte in den Bereichen analoge und gemischte ICS vor. not meet current safety standards and may not be in safe working order. Maxim integrierte Produkte widmet sich der Innovation und Kundenzufriedenheit und setzt sich für eine qualitativ hochwertige, zuverlässige Lösungen für seine Kunden ein. Real Time Clock Dallas RTC DS1287 DS12887 DS12B887 BQ3287 OEC12C Drop In Replace. Maxim integrierte Produkte bedienen Kunden in einer Vielzahl von Märkten, einschließlich Kommunikation, Computer, Verbraucher, Industrie, Medizin und Automobil.ĭas Unternehmen bietet ein umfassendes Produktportfolio an, darunter Datenkonverter, Verstärker und Komparatoren, ICS, Microcontroller, Sicherheits- und Schutzgeräte sowie Sensoren. Maxim Integrated Products ist ein börsennotiertes Unternehmen, das eine breite Palette von analogen und gemischten Signal integrierten Schaltkreisen (ICs) entwirft, entwickelt und verkauft.ĭas Unternehmen wurde 1983 gegründet und hat seinen Hauptsitz in San Jose, Kalifornien. ♦ Underwriters Laboratory (UL) Recognized ♦ Optional Industrial Temperature Range Available Abstract: DS12C887A Real-Time Clock Dallas DS12C887A DS12C887A RTC DS12C887 DS1285 DS1287 DS12885 DS12887 DS12C887 Text: / Dallas Direct at 1-88, or visit Maxims website at 1 DS12885/ DS12887, Dallas Real-Time Clocks for more detailed information. ♦ Optional Encapsulated DIP (EDIP) Package with Integrated Crystal and Battery (DS12887, DS12887A, DS12C887, DS12C887A) ![]() ![]() ♦ Optional 28-Pin PLCC Surface Mount Package or 32-Pin TQFP (DS12885) ♦ Automatic Power-Fail Detect and Switch Circuitry ♦ Time-of-Day Alarm Once Per Second to Once Per Day ♦ Interrupt Output with Three Independently Maskable Interrupt Flags ♦ RAM Clear Function (DS12885, DS12887A, and DS12C887A) Description, IC RTC CLOCK/CALENDAR PARALLEL 24-EDIP SK-DS12887. ♦ 114 Bytes of General-Purpose, Battery-Backed RAM (113 Bytes in the DS12C887 and DS12C887A) ♦ 14 Bytes of Clock and Control Registers ♦ Interfaced with Software as 128 RAM Locations ♦ Selectable Intel or Motorola Bus Timing ♦ 12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode ♦ RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099 ♦ Drop-In Replacement for IBM AT Computer Clock/Calendar The DS12887 integrates a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 114 bytes of battery backed static RAM (113 bytes in the DS12C887 and DS12C887A). The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287.
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