PCF2123BS SPI Real time clock/calendar

The PCF2123 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power applications. Data is transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 6.25 Mbit/s. An alarm and timer function is also available providing the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine tuning of the clock

产品特点 Features
  • Real time clock provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
  • Low backup current while running: typical 100 nA at VDD = 2.0 V and Tamb = 25 ℃
  • Resolution: seconds to years
  • Watchdog functionality
  • Freely programmable timer and alarm with interrupt capability
  • Clock operating voltage: 1.1 V to 5.5 V
  • 3 line SPI-bus with separate, but combinable data input and output
  • Serial interface at VDD = 1.8 V to 5.5 V
  • 1 second or 1 minute interrupt output
  • Integrated oscillator load capacitors for CL = 7 pF
  • Internal Power-On Reset (POR)
  • Open-drain interrupt and clock output pins
  • Programmable offset register for frequency adjustment
应用
  • Time keeping application
  • Battery powered devices
  • Metering
  • High duration timers
  • Daily alarms
  • Low standby power applications
功能框图
PCF2123BS 功能框图
封装
型号 订购码 (12NC) 可订购的器件编号 产品状态 封装
PCF2123BS/1 9352 863 82512 PCF2123BS/1,512 量产 HVQFN16 (SOT758-1)
PCF2123BS/1 9352 863 82518 PCF2123BS/1,518 量产 HVQFN16 (SOT758-1)
订货和供应
型号 订购码 (12NC) 可订购的器件编号 化学成分
PCF2123BS/1 9352 863 82512 PCF2123BS/1,512 PCF2123BS/1
PCF2123BS/1 9352 863 82518 PCF2123BS/1,518 PCF2123BS/1
PCF2123BS 技术支持
档案名称 标题 类型 格式
PCF2123BS SPI Real time clock/calendar Data sheet pdf
AN10853 ESD and EMC sensitivity of IC Application note pdf
UM10301 User Manual for NXP Real Time Clocks PCF85x3, PCA8565 and PCF2123, PCA2125 User manual pdf
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UM10204 I2C-bus specification and user manual User manual pdf
UM10206 I2C Demonstration Board 2005-1 Quick Start Guide User manual pdf
UM10569 Store and transport requirements User manual pdf
UM10204_JA I2C-bus specification and user manual User manual pdf