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BQ3265LDSS, BQ3285, BQ3285ECSS

Table of contents:
Info of BQ3265LDSS
Info of BQ3285
Info of BQ3285ECSS

BQ3265LDSS, BQ3285, BQ3285ECSS Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:TI D/C:07+

BQ3265LDSS, BQ3285, BQ3285ECSS Datasheet download

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Part Number: BQ3265LDSS

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: TI

D/C: 07+

Description: IC REAL TIME CLOCK 24-QSOP

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BQ3285 General Description

The CMOS bq3285 is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and batery operation. Other features inlude three maskable interrupt ources, square wave output, and 114 bytesofgeneralnonvolatilestorage.

The bq3285 write-protects the clock,calendar, and storage registers during power failure. A backup battery then maintains data and operates the clockandcalendar.

The bq3285 is a fully compatible real-time clock for IBM AT compatible computers and other applications. The only external components are a 32.768kHz crystal and a backup battery.

BQ3285 Maximum Ratings

Symbol	Parameter	Value	Unit	Conditions
V_CC	DC voltage applied on V_CC relative to V_SS	-0.3 to 7.0	V
V_T	DC voltage applied on any pin excluding V_CC relative to V_SS	-0.3 to 7.0	V	V_T V_CC + 0.3
T_OPR	Operatingtemperature	0 to +70	°C	Commercial
T_STG	Storage temperature	-55 to +125	°C
T_BIAS	Temperature under bias	-40 to +85	°C
T_SOLDER	Soldering temperature	260	°C	For 10 seconds

BQ3285 Features

Direct clock/calendar replace-ment for IBM AT-compatible computers and other applications
Functionally compatible with the DS1285
- Closely matches MC146818A pin configuration
114 bytes of general nonvolatile storage
160ns cycle time allows fast bus operation
Selectable Intel or Motorola bus timing
Less than 0.5A load under bat-tery operation
14 bytes for clock/calendar and control BCD or binary format for clock and calendar data
Calendar in day of the week,day of the month,months,and years,with automatic leap-year adjust-ment
Time of day in seconds,minutes,and hours
   - 12- or 24-hour format
   - Optional daylight saving adjustment
Programmable square wave out-put
Three individually maskable interrupt event flags:
   - Periodic rates from 122s to 500ms
   - Time-of-day alarm once per second to once per day
   - End-of-clock update cycle
24-pin plastic DIP or SOIC

BQ3285 Connection Diagram

BQ3285ECSS Parameters

Technical/Catalog Information	BQ3285ECSS
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Date Format	YY-MM-DD-dd
Time Format	HH:MM:SS (12/24 hr)
Voltage - Supply	4.5 V ~ 5.5 V
Interface	Parallel
Memory Size	242B
Package / Case	24-QSOP (SSOP)
Packaging	Tube
Type	Clock/Calendar/NVSRAM
Operating Temperature	0°C ~ 70°C
Drawing Number	296; 4073301-4; DBQ; 24
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	BQ3285ECSS BQ3285ECSS 296 2593 5 ND 29625935ND 296-2593-5

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