DS14285
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DS14285

实时时钟,带有非易失RAM控制器

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产品详情
特性
  • Direct replacement for IBM AT computer clock/calendar
  • Functionally compatible with the DS1285/DS1287
  • Available as chip (DS14285, DS14285S, or DS14285Q) or stand-alone module with embedded lithium battery and crystal (DS14287)
  • Automatic backup supply and write protection to make external SRAM nonvolatile
  • Counts seconds, minutes, hours, days, day of the week, date, month, and year with leap year compensation valid up to 2100
  • Binary or BCD representation of time, calendar, and alarm 12- or 24-hour clock with AM and PM in 12-hour mode
  • Daylight savings time option
  • Multiplex bus for pin efficiency
  • Interfaced with software as 128 RAM locations
    • 14 bytes of clock and control registers
    • 114 bytes of general purpose RAM
  • Programmable square wave output signal
  • Bus-compatible interrupt signals (active-low IRQ)
  • Three interrupts are separately software maskable and testable
    • Time-of-day alarm once/second to once/day
    • Periodic rates from 122µs to 500ms
    • End of clock update cycle
  • Optional industrial temperature version available DS14285 DIP, SO, and PLCC

产品技术资料帮助

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

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软件和型号相关生态系统

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