BL5372.pdf? 超低功耗（典型值[email protected]）
? 實(shí)時(shí)時(shí)鐘（12時(shí)制或者24時(shí)制兩種計(jì)時(shí)方式）
? 自動(dòng)識別閏年、平年（2000~2099）
? BCD碼表示的時(shí)鐘計(jì)數(shù)（包括時(shí)、分、秒）
和萬年歷（包括閏年、平年、月、日、
周）
? 30秒數(shù)字校時(shí)功能
?可控的32.768KHz（或者32KHz）輸出
? 兩個(gè)可編程鬧鐘輸出
? 兩路可編程方波輸出，為CPU提供多種中斷
（一個(gè)月至一秒的周期性中斷）
? 通過I2C兩線接口與CPU相連（最大數(shù)據(jù)時(shí)鐘頻率為100KHz）
? 晶振停振檢測鎖存功能保證了時(shí)鐘數(shù)據(jù)有效性
? 32KHz和32.768KHz晶振選擇
? 高精度的時(shí)間調(diào)整電路，保證了時(shí)鐘走時(shí)的精確
? 超低電壓工作（計(jì)時(shí)電壓最低可至1.8V，通訊電壓最低可至1.8V）
? SOP8或TSSOP8封裝
? 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
