DS1340, DS1340C

I²C RTC,带有涓流充电器

I²C实时时钟,带有涓流充电器,可通过软件进行校准


点击查看特定型号的库存状况。

说明

The DS1340 is a real-time clock (RTC)/calendar that is pin compatible and functionally equivalent to the ST M41T00, including the software clock calibration. The device additionally provides trickle-charge capability on the VBACKUP pin, a lower timekeeping voltage, and an oscillator STOP flag. Block access of the register map is identical to the ST device. Two additional registers, which are accessed individually, are required for the trickle charger and flag. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. A built-in power-sense circuit detects power failures and automatically switches to the backup supply. The device is programmed serially through an I²C bidirectional bus.
DS1340、DS1340C:典型工作电路 DS1340、DS1340C:典型工作电路 放大+

关键特性

  • Enhanced Second Source for the ST M41T00
  • Completely Manages All Timekeeping Functions
    • RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year
    • Software Clock Calibration
    • Oscillator Stop Flag
  • Low-Power Operation Extends Battery Backup Run Time
    • Low Timekeeping Voltage Down to 1.3V
    • Automatic Power-Fail Detect and Switch Circuitry
    • Trickle-Charge Capability
  • Three Operating Voltage Ranges (1.8V, 3V, and 3.3V) Supports Systems Using Legacy and Modern Power Buses
  • Surface-Mount Package with an Integrated Crystal (DS1340C) Saves Additional Space and Simplifies Design
  • Simple Serial Port Interfaces with Most Microcontrollers
    • Fast (400kHz) I2C Interface
  • 8-Pin µSOP or SO Package Minimizes Required Space
  • Underwriters Laboratories (UL®) Recognized

应用

  • 医疗装置
  • 销售终端机(POS)装置
  • 便携式仪表
  • 电信
Part NumberInterfaceVSUPPLY
(V)
Time Keeping Current
(nA)
CL
(pF)
Memory TypeTime of Day AlarmsIntegrated ResonatorFunctionsPackage/PinsBudgetary
Price
typSee Notes
DS1340 I2C
1.8
3
3.3
5
80012.5None0-RTC
SOIC (N)/8
SOIC (W)/16
UMAX/8
$1.50 @1k
DS1340C XTAL
SOIC(N)/8
$2.75 @1k
查看所有Timekeeping & Real-Time Clocks (76)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

工具和模型

  • DS1340 IBIS模型
  • CAD Symbols and Footprints

  • DS1340C-18#
  • DS1340C-3#
  • DS1340C-33#
  • DS1340C-33#T&R
  • DS1340U-18+
  • DS1340U-3+
  • DS1340U-3+T&R
  • DS1340U-33+
  • DS1340U-33+T&R
  • DS1340Z-18+
  • DS1340Z-3+
  • DS1340Z-3+T&R
  • DS1340Z-33+
  • DS1340Z-33+T&R
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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