Product Summary

The BQ3285LDSS is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. Other features of the BQ3285LDSS include three maskable interrupt sources, square wave output, and 114 bytes of general nonvolatile storage.

Parametrics

BQ3285LDSS absolute maximum ratings: (1)VCC DC voltage applied on VCC relative to VSS: -0.3 to 7.0 V; (2)VT, DC voltage applied on any pin excluding VCC; (3)relative to VSS: -0.3 to 7.0 V; (4)TOPR Operating temperature: 0 to +70℃ ; (5)TSTG Storage temperature: -55 to +125℃; (6)TBIAS Temperature under bias: -40 to +85℃; (7)TSOLDER Soldering temperature: 260℃.

Features

BQ3285LDSS features: (1)Direct clock/calendar replace-ment for IBM AT-compatible computers and other applications; (2)Functionally compatible with the DS1285 - Closely matches MC146818A pin configuration; (3)114 bytes of general nonvolatile storage; (4)160ns cycle time allows fast bus operation; (5)Selectable Intel or Motorola bus timing; (6)Less than 0.5μA load under battery operation; (7)14 bytes for clock/calendar and control; (8)BCD or binary format for clock and calendar data.

Diagrams

BQ3285LDSS block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
BQ3285LDSS
BQ3285LDSS

Texas Instruments

Real Time Clock W/242x8 NVSRAM

Data Sheet

0-1: $3.37
1-25: $3.13
25-100: $2.83
100-250: $2.60
BQ3285LDSSG4
BQ3285LDSSG4

Texas Instruments

Real Time Clock W/242x8 NVSRAM

Data Sheet

0-1: $3.32
1-25: $2.83
25-100: $2.60
100-250: $2.37
BQ3285LDSSTRG4
BQ3285LDSSTRG4

Texas Instruments

Real Time Clock W/242x8 NVSRAM

Data Sheet

0-1860: $1.70
1860-2000: $1.64
2000-2500: $1.64
BQ3285LDSSTR
BQ3285LDSSTR

Texas Instruments

Real Time Clock W/242x8 NVSRAM

Data Sheet

0-1860: $1.70
1860-2000: $1.64
2000-2500: $1.64