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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