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BQ3285的基本参数
  • 制造厂商:TI
  • 产品类别:时钟和计时
  • 技术类目:实时时钟 (RTC) 和计时器
  • 功能描述:具有 114x8 NVSRAM 的 RTC IC
  • 点击这里打开及下载BQ3285的技术文档资料
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BQ3285的产品详情:

The CMOS bq3285 is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. Other features include three maskable interrupt sources, square wave output, and 114 bytes of general nonvolatile storage.

The bq3285 write-protects the clock, calendar, and storage registers during power failure. A backup battery then maintains data and operates the clock and calendar.

The bq3285 is a fully compatible real-time clock for IBM AT compatible computers and other applications. The only external components are a 32.768kHz crystal and a backup battery.

BQ3285的优势和特性:
  • Direct clock/calendar replacement for IBM? AT-compatible computers and other applications
  • Functionally compatible with the DS1285
    • Closely matches MC146818A pin configuration
  • 114 bytes of general nonvolatile storage
  • 160ns cycle time allows fast bus operation
  • Selectable Intel or Motorola bus timing
  • Less than 0.5μA load under battery operation
  • 14 bytes for clock/calendar and control
  • BCD or binary format for clock and calendar data
  • Calendar in day of the week, day of the month, months, and years, with automatic leap-year adjustment
  • Time of day in seconds, minutes, and hours
    • 12- or 24-hour format
    • Optional daylight saving adjustment
  • Programmable square wave output
  • Three individually maskable interrupt event flags:
    • Periodic rates from 122us to 500ms
    • Time-of-day alarm once per second to once per day
    • End-of-clock update cycle
  • 24-pin plastic DIP or SOIC
BQ3285的参数(英文):
  • Iq (Typ) (uA)
  • 0.5
  • Features
  • RAM clear function, Multiplexed bus interface, 0.114-kB memory density
  • Rating
  • Catalog
  • Operating temperature range (C)
  • 0 to 70
  • Supply voltage (Max) (V)
  • 7
  • Supply voltage (Min) (V)
  • -0.3
BQ3285具体的完整产品型号参数及价格(美元):

BQ3285的完整型号有:BQ3285S-SB2,以下是这些产品的关键参数及官网采购报价:

BQ3285S-SB2,工作温度:0 to 70,封装:SOIC (DW)-24,包装数量MPQ:25个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网BQ3285S-SB2的批量USD价格:6.098(1000+)

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BQ3285的评估套件:

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