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RX-8025SA/SBEPSON目目目目录录录录1.概要········································································································12.框图········································································································13.引脚说明·································································································23.1引脚配置············································································································23.2引脚功能············································································································24.绝对昀大值·····························································································35.推荐动作条件·························································································36.频率特性·································································································37.电气特性·································································································38.使用方法·································································································58.1功能概要············································································································58.2寄存器说明·········································································································68.3计时精度调整功能·····························································································138.4固定周期中断功能·····························································································158.5Alarm_W功能····································································································178.6Alarm_D功能·····································································································198.7各种检测功能·····································································································208.8从I2C-BUS接口读取/写入数据········································································238.9外部连接例·········································································································279.外形尺寸图/标记配置图····································································2810.参考数据·································································································2911.使用上的注意事项·················································································3011.1处理上的注意事项··························································································3011.2装配上的注意事项··························································································30RX-8025SA/SBEPSON1Ver.0.12002.07I2C-BUS接口实时时钟RX-8025SA/NB内置高精度频率调整的32.768kHz水晶振子Ta=+25时510-6对应I2C-BUS高速模式400kHz时计时分秒日历年月日星期的计数功能BCD代码可选择12/24时间制自动判别至2099年的闰年内置高精度时计精度调整电路对CPU的发生中断功能周期1个月~0.5秒具有中断请求中断停止功能2个系统的闹钟功能Alarm_W星期时分Alarm_D时分32.768kHz时钟输出带控制引脚的CMOS输出对内部数据进行有效无效判定的振动停止检测功能电源电压监视功能可选择检测标准电压1.15V~5.5V的宽幅计时保持电压范围1.7V~5.5V的宽幅接口电压范围低消耗电流0.48A/3.0VTyp.1.概要本模块是内置高精度调整的32.768kHz水晶振子的I2C总线接口方式的实时计时器除了具有6种发生中断功能2个系统的闹钟功能对内部数据进行有效无效判定的振动停止检测功能电源电压监视功能等外还配有时钟精度调整功能可以对时钟进行任意精度调整内部振荡回路是以固定电压驱动因而可获得受电压变动影响小且稳定的32.768kHz时钟输出本产品功能多样采用表贴封装形式昀适用于各种手机携带终端及其他小型电子机器等2.框图RX-8025SA/SBEPSON2Ver.0.12002.073.引脚说明3.1引脚配置3.2引脚功能信号名I/O功能SCL输入I2C通信用的串行时钟输入与这时钟信号同步SDA引脚进行数据的输入输出本输入与电源电压无关输入电压昀高可达到5.5VSDA双向与I2C通信用串行时钟同步进行地址数据应答bit等的输入输出这一引脚在输出时N-ch开路漏极请根据信号线的容量连接适当的下拉电阻FOUT输出由FOE控制的32.768kHz时钟输出FOE=High时输出32.768kHzC-MOS输出FOE=Low或OPEN时计时器输出停止这时的输出固定为LFOE输入控制FOUT引脚输出状态的输入引脚内置下拉电阻本引脚High时从FOUT引脚输出32.768kHz本引脚Low或OPEN时FOUT引脚不输出本输入与电源电压无关输入电压昀高可达到5.5V/INTA输出中断输出AN-ch开路漏极输出输出闹钟中断Alarm_D及固定周期中断/INTB输出中断输出BN-ch开路漏极输出输出闹钟中断Alarm_WTEST测试用引脚请务必连接到VDDVDD连接到+电源GND接地连接N.C.没有与内部IC连接但请注意RX-8025NB的14~22P的N.C.引脚是根据内部构架进行相互连接此端子可open或与GND或VDD进行连接注请务必连接VDD–VSS间0.1F以上的旁路电容RX-8025SA/SBEPSON3Ver.0.12002.074.绝对昀大值GND=0V项目记号条件定格值单位电源电压VDDVDD-GND间-0.3~+6.5V输入电压V1SCLSDAFOE引脚Vss-0.3~+6.5VVO1SDA/INTA/INTB引脚Vss-0.3~+6.5V输出电压VO2FOUT引脚Vss-0.5~VDD+0.3V保存温度范围TSTG除去捆包状态以单品保存-55~+1255.推荐操作条件GND=0V项目记号条件Min.Typ.Max.单位操作电源电压VDD-1.73.05.5V计时电源电压VCLK-1.153.05.5V操作温度范围TOPR无凝结-40+25+85OFF时附加电压VPUPSCL,SDA,/INTA,/INTB引脚-0.35.56.频率特性GND=0V项目记号条件规格单位频率精度f/fTa=+25VDD=3.0VAA精度05(*1)10-6频率电压特性F/VTa=+25VDD=2V5V2Max10-6/V频率温度特性TopTa=-10+70VDD=3.0V;+25基准+10/-12010-6起振时间TsTATa=+25VDD=3V3Maxs年漂移量faTa=+25VDD=3.0V;5Max10-6/year*1相当于月差30秒除去补偿值7.电气特性7.1DC电气特性fSCL7.1.1DC电气特性1无特殊标记时GND=0VVDD=3VTa=40~85项目记号条件Min.Typ.Max.单位消耗电流1IDD1VDD=5VT.B.D.T.B.D.消耗电流2IDD2fSCL=0Hz,FOE=Vss/INTA,/INTB=VDDFOUT;输出OFFOFF时LVDD=3V0.481.20A消耗电流3IDD3VDD=5VT.B.D.T.B.D.消耗电流4IDD4fSCL=0Hz/INTA,/INTB,FOE=VDDFOUT;32.768kHz输出ONCL=0pFVDD=3VT.B.D.T.B.D.A消耗电流5IDD5VDD=5VT.B.D.T.B.D.消耗电流6IDD6fSCL=0Hz/INTA,/INTB,FOE=VDDFOUT;32.768kHz输出ONCL=30pFVDD=3VT.B.D.T.B.D.AH输入电压VIH0.8VDD5.5VL输入电压VILSCLSDAFOE引脚Vss-0.30.2VDDVH输入电流IOHFOUT引脚VOH=VDD-0.5V-0.5mAIOL1FOUT引脚VOL=0.4V0.5mAIOL2/INTA/INTB引脚VOL=0.4V1.0mAL输入电流IOL3SDA引脚VOL=0.4V4.0mA输入漏极电流IILSCL引脚V1=5.5或GNDVDD=5.5V-11ARX-8025SA/SBEPSON4Ver.0.12002.077.1.2DC电气特性2无特殊标记时GND=0VVDD=3VTa=40~85项目记号条件Min.Typ.Max.单位下拉电阻输入电流IFOEFOE引脚V1=5.5V0.31.0AOFF状态输出电流IOZSDA,/INTA,/INTB引脚VO=