TI BQ4802LYPW

时钟/日历警报器，夏令时，闰年，监控器，监视计时器

Overview

The bq4802Y/bq4802LY real-time clock is a low-power microprocessor peripheral that integrates a time-of-day clock, a century-based calendar, and a CPU supervisor, with package options including a 28-pin SOIC, TSSOP, or SNAPHAT that requires the bq48SH-28x6 to complete the two-piece module. The bq4802Y/ bq4802LY is ideal for fax machines, copiers, industrial control systems, point-of-sale terminals, data loggers, and computers.

The bq4802Y/bq4802LY contains a temperature-compensated reference and comparator circuit that monitors the status of its voltage supply. When the bq4802Y/bq4802LY detects an out-of-tolerance condition, it generates an interrupt warning and subsequently a microprocessor reset. The reset stays active for 200 ms after VCC rises within tolerance, to allow for power supply and processor stabilization. The reset function also allows for an external push-button override.

Features

Bulk Package
28-TSSOP (0.173, 4.40mm Width) package
28 terminations
28 pin count
Be maintained at 3.3V for high efficiency.

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
BQ4802LYPW Real Time Clocks applications.

• Digital still camera
• Digital video camera
• Printers
• Copy machines
• Mobile equipment
• Battery powered devices
• Printers and copiers
• Electronic metering
• Digital cameras
• White goods