Datasheet > BU9873FVM-GTTR

BU9873FVM-GTTR

更新时间： 2022-02-26 10:33:13

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
40页	1221K
描述
I2C BUS Serial Interface RTC with High-precision Oscillation Adjustment

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BU9873FVM-GTTR 数据手册

Datasheet

Real-Time Clock (RTC) series

I²C BUS Serial Interface RTC

with High-precision Oscillation Adjustment

BU9873

Outline

Important Characteristics

The BU9873 is a CMOS real-time clock, which has a

■

Time Keeping Voltage

Time Keeping Current 1

(V_DD=3V, Ta=+25°C)

Time Keeping Current 2

(V_DD=3V, Ta=-40°C to +85°C)

Power Supply Voltage

Access Frequency 1

(V_DD=1.8V to 2.5V)

1.45V to 5.5V

0.4µA (Typ)

built-in interrupt generation function. This product is

connected to the CPU via I²C interface, and configured to

perform serial transmission of time and calendar data to

the CPU. A high-precision oscillation adjustment circuit is

also integrated, which is capable of adjusting time counts

with digital method, and correcting deviations in the

oscillation frequency of the crystal oscillator.

■

1.0µA (Max)

■

1.8V to 5.5V

100kHz (Max)

■

Access Frequency 2

(V_DD=2.5V to 5.5V)

400kHz (Max)

Package

W (Typ) x D (Typ) x H (Max)

Features

■

Connected to the CPU via I²C Interface

■

Time (Hour･Minute･Second, Selectable 12-Hour

and 24-Hour Mode Setting)

■

Calendar (Year･Month･Day･Week)

Periodic Interrupt Function

(Output from INTRB, Ranging from 1 Second to 1

Month)

SOP8

MSOP8

2.90mm x 4.00mm x 0.90mm

5.00mm x 6.20mm x 1.71mm

■

Alarm Interrupt Function

(Day-of-Week ･Hour ･Minute in Setting Format,

Output from INTRB)

■

Oscillation Halt Sensing Function

32.768 kHz Clock Output

SOP- J8

4.90mm x 6.00mm x 1.65mm

VSON008X2030

2.00mm x 3.00mm x 0.60mm

(Output from 32KOUT with Control Pin)

±30 Second Adjustment Function

Automatic Leap Year Recognition up to the Year

2099

Built-in Oscillation Stabilizing Capacitors (C_G, C_D)

High-Precision Oscillation Adjustment Circuit

■

TSSOP-B8

3.00mm x 6.40mm x 1.20mm

■

○Product structure: Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays

www.rohm.com

TSZ02201-0919AGZ00010-1-2

13.Sep.2013 REV.001

1/37

TSZ22111・14・001

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