- 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
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
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.
- 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
- 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+）
PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice
PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。
在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)
