Product Summary

The CMOS BQ3287MT-I is a low-power microprocessor peripheral providing a time-of-day clock and 100-year calendar with alarm features and battery operation. Other features include three maskable interrupt sources, squarewave output, and 114 bytes of general nonvolatile storage.

Parametrics

BQ3287MT-I absolute maximum ratings: (1)DC voltage applied on VCC relative to VSS: -0.3 to 7.0 V; (2)VT; (3)DC voltage applied on any pin excluding VCC relative to VSS: -0.3 to 7.0 V VT≤VCC + 0.3; (4)Operating temperature: 0 to +70 ℃ at Commercial, -20 to +70 ℃ at Extended "I"; (5)Storage temperature: -40 to +70 ℃ at Commercial, -40 to +70 ℃ at Extended "I"; (6)Temperature under bias: -10 to +70 ℃ at Commercial, -20 to +70 ℃ at Extended "I"; (7)Soldering temperature: 260 ℃ For 10 seconds.

Features

BQ3287MT-I features: (1)Direct clock/calendar replacement for IBM AT-compatible computers and other applications; (2)Functionally compatible with the DS1287/DS1287A and MC146818A; (3)114 bytes of general nonvolatile storage; (4)Integral lithium cell and crystal; (5)160 ns cycle time allows fast bus operation; (6)Selectable Intel or Motorola bus timing; (7)14 bytes for clock/calendar and control; (8)BCD or binary format for clock and calendar data.

Diagrams

BQ3287MT-I pin connections

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(USD)
Quantity
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Data Sheet

0-1: $8.29
1-25: $7.92
25-100: $5.95
100-250: $5.83
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