微功耗实时时钟:实时时钟,RTC,BL5372 Replace RS5C372.
FEATURES

• 超低功耗(典型值400nA@3.6V)

 实时时钟(12时制或者24时制两种计时方式)

 自动识别闰年、平年(2000~2099)

 BCD码表示的时钟计数(包括时、分、秒)

   和万年历(包括闰年、平年、月、日、
周)

 30秒数字校时功能 

可控的32.768KHz(或者32KHz)输出

 两个可编程闹钟输出 

 两路可编程方波输出,为CPU提供多种中断

 (一个月至一秒的周期性中断)

 通过I2C两线接口与CPU相连(最大数据时钟频率为100KHz)

 晶振停振检测锁存功能保证了时钟数据有效性 

 32KHz和32.768KHz晶振选择 

 高精度的时间调整电路,保证了时钟走时的精确

 超低电压工作(计时电压最低可至1.8V,通讯电压最低可至1.8V)

• SOP8或TSSOP8封装







PIN CONFIGUTION
优势替代
RS5C372 RS5C372.pdf

No.12083

FEATURES

 Time keeping voltage: 1.3V to 6.0V

• Lowest supply current: 0.5μA Typ. (0.9μA Max.) :

   3V (25℃)
(1.0μA Max.) : 3V (-40 to+85℃) 

 Connected to the CPU via only 2-wires 

   (I2C bus Interface, Max.400kHz, address 7bit)

•  A clock counter (counting hours, minutes, and seconds) 

   and a calendar counter (counting leap years, years, 

   months, and days of the week) in BCD codes

 Interrupt to the CPU (period of one month 

  to one second, interrupt flag, interrupt 

  halt
function)( INTRA , INTRB ) 

 Two systems of alarm functions 

  (days of the week, hours, and minutes) ( INTRA , INTRB )

 Oscillation halt sensing to judge internal data validity 

 Clock output of 32.768kHz (32.000kHz) 

  (output controllable via a register) ... (Nch. open drain output) 

 Second digit adjustment by±30 seconds

• Automatic leap year recognition up to the year 2099 

 12-hour or 24-hour time display selectable

 Oscillator of 32.768kHz or 32.000kHz may be used 

 CMOS logic 

 Package: 8pin SSOP 

PIN CONFIGUTION
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