TI BQ4845S-A4TR

时钟/日历警报器，夏令时，闰年，监控器，监视计时器

Overview

The bq4845 Real-Time Clock is a low-power microprocessor peripheral that integrates a time-of-day clock, a 100-year calendar, and a CPU supervisor in a 28-pin SOIC or DIP. The bq4845 is ideal for fax machines, copiers, industrial control systems, point-of-sale terminals, data loggers, and computers.

The bq4845 can generate other interrupts based on a clock alarm condition or a periodic setting. The alarm interrupt can be set to occur from once per second to once per month. The alarm can be made active in the battery-backup mode to serve as a system wake-up call. For interrupts at a rate beyond once per second, the periodic interrupt can be programmed with periods of 30.5us to 500ms.

Features

Tape & Reel (TR) Package
28-SOIC (0.295, 7.50mm Width) package
28 terminations
28 pin count
5V power supplies
Be maintained at 5V for high efficiency.

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
BQ4845S-A4TR Real Time Clocks applications.

• Printers
• Copy machines
• Mobile equipment
• Battery powered devices
• Printers and copiers
• Electronic metering
• Digital cameras
• White goods
• Elapsed time counter
• Network powered devices