Datasheet > SM8577B

SM8577B

更新时间： 2024-11-08 22:43:03

品牌	Logo	应用领域
NPC		时钟
页数	文件大小	规格书
10页	79K
描述
Real-time Clock IC

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SM8577B 数据手册

SM8577B

Real-time Clock IC

NIPPON PRECISION CIRCUITS INC.

OVERVIEW

PINOUT

The SM8577B is a CMOS serial-interface type real-

time clock IC that operates at 32.768 kHz. It

employs a 3-line serial interface to transfer time and

date data. It incorporates a supply-voltage detect

function to determine data validity/invalidity. It

features an output interrupt with 32 kHz or 1 Hz

output frequency. It is available in 8-pin SOPs.

VDD

XTN

DATA

CLK

VSS

FOUT

FEATURES

■ 2.5 to 5.5 V operating voltage range

■ 1.0 µA at 3.0 V (typ) current consumption

■ 3-line serial interface

■ 1.7 ± 0.3 V supply voltage detection threshold

■ Timer counters for second, minute, hour, day, day

of the week, month, and year

PACKAGE DIMENSIONS

Unit: mm

8-pin SOP

■ Automatic leap-year calendar adjustment

■ 32.768 kHz and 1 Hz output interrupt selectable

■ Crystal oscillator circuit built-in (C built-in)

■ 24-hour time mode

■ 8-pin SOP

+ 0.10

0.15

− 0.05

5.2 0.3

0 to 10∞

ORDERING INFOMATION

1.27

0.4 0.1

Device

Package

SM8577BS

8pin SOP

NIPPON PRECISION CIRCUITS—1

12 3 4 5 6 7...10

中文翻译

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