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首页产品索引MCP7940M

MCP7940M

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RTCC with SRAM (no battery backing)

 

产品信息

The MCP7940M I2CTM compatible real-time clock/calendar (RTCC) includes SRAM and a digital trimming circuit for accuracy which is normally found in higher priced devices. Using a low-cost 32,768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multifunction open drain output can be programmed as an Alarm Out or as a Clock Out that supports 4 selectable frequencies.

Timekeeping

  Real-Time Clock/Calendar (RTCC)

  Hours, Minutes, Seconds, Day of Week, Day, Month, Year

  Leap year compensated  to 2399

  12/24 hour modes

  On-Chip Digital Trimming/Calibration

  1 PPM Resolution

  ±129 PPM Range

  Dual Programmable Alarms

  Versatile Output Pin

  Clock output with selectable frequency

  Alarm output

  General Purpose output

  64 Bytes SRAM

  2-Wire Serial Interface, I2C™Compatible

  I2C Clock Frequency up to 400 kHz

Low-Power

  Wide Voltage Range

  Operating Voltage 1.8V to 5.5V

  Low Typical Timekeeping Current

电路图、引脚图和封装图

在线购买

型号制造商描述购买
MCP7940M-I/PMicrosemi CorporationIC FPGA 130 I/O 208PQFP 立即购买
MCP7940M-I/STTE Connectivity Deutsch ConnectorsCONN HSG RCPT JAM NUT 55POS SKT 立即购买
MCP7940M-I/MSTE Connectivity Deutsch ConnectorsCONN HSG RCPT JAM NUT 55POS SKT 立即购买
MCP7940M-I/SNSensata .CIRBRKRMAG-HYDRLEVER 立即购买
MCP7940MT-I/STITT CannonCB6C3#03#12PINPLUG 立即购买
MCP7940MT-I/MSAmphenol AerospaceCONN HSG PLUG 61POS STRGHT SCKT 立即购买

应用案例更多案例

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