Datasheet > BL5373

BL5373

更新时间： 2024-11-02 12:23:03

品牌	Logo	应用领域
上海贝岭 - BELLING		时钟
页数	文件大小	规格书
30页	268K
描述
The BL5373 is a CMOS type real-time clock

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BL5373 数据手册

BL5373

SHANGHAI

BELLING

Low Power Real-Time Clock (RTC)

GENERAL DESCRIPTION

FEATURES

The BL5373 is a CMOS type real-time clock,

which is connected to the CPU via two wires

and capable of serial transmission of clock to

the CPU. The BL5373 can generate various

periodic interrupt clock pulses lasting for long

period (one month), and alarm interrupt can be

made by two incorporated systems. Since an

oscillation circuit is driven at a constant

voltage, it undergoes fluctuations of few

voltage and consequently offers low current

consumption (TYP. 400nA @ 5V)

ꢀ Lowest supply current: 400nA TYP. @ 5V

ꢀ Connected to the CPU via only 2-wires

(MAX. 100KHz)

ꢀ A clock counter (counting hours, minutes,

and seconds) and a calendar counter

(counting leap years, years, months, days,

and days of the week) in BCD codes

ꢀ Two systems output providing interrupt to

the CPU output (period of one month to one

second, interrupt halt function)

ꢀ Two systems output of alarm functions

ꢀ Oscillation halt sensing to judge internal

data validity

ꢀ Clock output of 32.768KHz (32KHz)

(output controllable via a register)

ꢀ Second digit adjustment by ±30 seconds

ꢀ Automatic leap year recognition up to the

year 2099

It also provides an oscillator halt sensing

function applicable for data validation at

power-on and other occasions. The product

also incorporates a time trimming circuit that

adjusts the clock with higher precision by

adjusting any errors in crystal oscillator

frequencies based on signals from the CPU.

The crystal oscillator may be selected from

32KHz or 32.768KHz types.

ꢀ 12-hour or 24-hour time display selectable

ꢀ High precision time trimming circuit

ꢀ Oscillator of 32.768KHz or 32KHz may be

used

It adopts 8-pin SOP or TSSOP package.

ꢀ CMOS logic

ꢀ Package: 8pin SOP or TSSOP

BL5373 Data Sheet

12 3 4 5 6 7...30

中文翻译

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