Position: Home  > All Categories> Integrated Circuits (ICs) > bq3285L

bq3285L

Features: Direct clock/calendar replacement for IBM AT-compatible computers and other applications Functionally compatible with the DS1285 - Closely matches MC146818A pin configuration 2.73.6V operation (bq3285L); 4.55.5V operation (bq3285E) 242 bytes of general nonvolatile storage 32.768kHz outpu...

product image

bq3285L Picture
See larger image
SeekIC No. : 004301298 Detail

bq3285L: Features: Direct clock/calendar replacement for IBM AT-compatible computers and other applications Functionally compatible with the DS1285 - Closely matches MC146818A pin configuration 2.73.6V opera...

bq3285L Data Sheet

floor Price/Ceiling Price

Get Latest Price
Part Number:
bq3285L
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

SeekIC Buyer Protection PLUS - newly updated for 2013!

  • Escrow Protection.
  • Guaranteed refunds.
  • Secure payments.
  • Learn more >>

Month Sales

268 Transactions

Rating

evaluate  (4.8 stars)

Upload time: 2024/12/25

add to my favourite

Payment Methods

All payment methods are secure and covered by SeekIC Buyer Protection PLUS.

Notice: When you place an order, your payment is made to SeekIC and not to your seller. SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller.
Product Details

Description



Features:

Direct clock/calendar replacement for IBM AT-compatible computers and other applications
Functionally compatible with the DS1285
   - Closely matches MC146818A pin configuration
2.73.6V operation (bq3285L); 4.55.5V operation (bq3285E)
242 bytes of general nonvolatile storage 32.768kHz output for power management
System wake-up capability-alarm interrupt output active in battery-backup mode
Less than 0.5A load under bat-tery operation
Selectable Intel or Motorola bus timing
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 adjustment
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,SOIC,orSSOP


Pinout

Connection Diagram


Specifications

Symbol Parameter Value Unit Conditions
VCC DC voltage applied on VCC relative to VSS -0.3 to 7.0 V
VT DC voltage applied on any pin excluding VCC
relative to VSS		 -0.3 to 7.0 V VT VCC + 0.3
TOPR Operatingtemperature 0 to +70 °C Commercial
TSTG Storage temperature -55 to +125 °C
TBIAS Temperature under bias -40 to +85 °C
TSOLDER Soldering temperature 260 °C For 10 seconds



Description

The CMOS bq3285E/L is a lowpower microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. The bq3285L supports 3V systems. Other bq3285E/L features include three maskable interrupt sources, square-wave output, and 242 bytes ofgeneralnonvolatilestorage.


A 32.768kHz output ofbq3285L is available for sustaining power-management activities. Wake-up capability is provided by an alarm interrupt, which isactiveinbattery-backupmode.


The bq3285E/L write-protects the clock, calendar, and storage registers during power failure. A backup battery then maintains data and operatestheclockandcalendar.


The bq3285E/L 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.




Customers Who Bought This Item Also Bought

Margin,quality,low-cost products with low minimum orders. Secure your online payments with SeekIC Buyer Protection.
You may also be interested in :
Audio Products
HUC1002
WM-64CT
Prototyping Products
AVT4168
DE1
Inductors, Coils, Chokes
DR127-330-R
SD53-100-R
Tools
TCP202
G084SN05 V.3
Power Supplies - Board Mount
HC-06
PM150RSA060-S81AH0G
Test Equipment
TOP853
TOP2005
View more