ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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BQ4802LYPWR Clock Timer ICS Real Time Clock Parallel RTC
FEATURES
D Real-Time Clock Counts Seconds Through Centuries in BCD Format
– bq4802Y: 5-V Operation
– bq4802LY: 3.3-V Operation
D On-Chip Battery-Backup Switchover Circuit With Nonvolatile Control for External SRAM
D Less Than 500 nA of Clock Operation Current in Backup Mode
D Microprocessor Reset With Push-Button Override
D Independent Watchdog Timer With Programmable Time-Out Period
D Power-Fail Interrupt Warning
D Programmable Clock Alarm Interrupt Active in Battery-Backup Mode
D Programmable Periodic Interrupt
D Battery-Low Warning
D 28-pin SOIC, TSSOP, and SNAPHAT Package Options
APPLICATIONS
D Telecommunications Base Stations
D Servers
D Handheld Data Collection Equipment
D Medical Equipment
D Handheld Instrumentation
D Test Equipment
DESCRIPTION
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 super- visor, 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.