Datasheet > 微控制器和处理器 > 计时器或实时时钟> BQ32000

BQ32000

更新时间： 2024-10-28 06:44:15

品牌	Logo	应用领域
德州仪器 - TI		时钟
页数	文件大小	规格书
20页	504K
描述
REAL-TIME CLOCK (RTC)

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数据手册

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BQ32000 数据手册

bq32000

www.ti.com................................................................................................................................................... SLUS900B–DECEMBER 2008–REVISED JUNE 2009

REAL-TIME CLOCK (RTC)

FEATURES

APPLICATIONS

•

General consumer electronics

•

Automatic Switchover to Backup Supply

I²C Interface

•

Supports Serial Clock up to 400 kHz

•

Uses 32.768-kHz Crystal

With –63-ppm to +126-ppm Adjustment

•

Integrated Oscillator-Fail Detection

8-Pin SOIC Package

–40°C to 85°C Ambient Operating Temperature

DESCRIPTION

The bq32000 device is a compatible replacement for industry standard real-time clocks.

The bq32000 features an automatic backup supply with integrated trickle charger. The backup supply can be

implemented using a capacitor or non-rechargeable battery. The bq32000 has a programmable calibration

adjustment from –63 ppm to +126 ppm. The bq32000 registers include an OF (oscillator fail) flag indicating the

status of the RTC oscillator, as well as a STOP bit that allows the host processor to disable the oscillator. The

time registers are normally updated once per second, and all the registers are updated at the same time to

prevent a timekeeping glitch. The bq32000 includes automatic leap-year compensation.

ORDERING INFORMATION⁽¹⁾

T_A

PACKAGE⁽²⁾

ORDERABLE PART NUMBER

TOP-SIDE MARKING

–40°C to 85°C

SOIC – D

Reel of 2500

BQ32000DR

bq32000 xx y zzzz⁽³⁾

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

(3) xx = date code, y = assembly site, zzzz = lot code

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...20

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与BQ32000相关器件

型号	品牌	获取价格	描述	数据表
BQ32000D	TI	获取价格	REAL-TIME CLOCK (RTC)
BQ32000DR	TI	获取价格	REAL-TIME CLOCK (RTC)
BQ32002	TI	获取价格	可自动切换到备用电源的实时时钟 (RTC)
BQ32002D	TI	获取价格	可自动切换到备用电源的实时时钟 (RTC) \| D \| 8 \| -40 to
BQ32002DR	TI	获取价格	可自动切换到备用电源的实时时钟 (RTC) \| D \| 8
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BQ3285EC	TI	获取价格	Real-Time Clock (RTC)
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