Y2K-Compliant Parallel RTC With CPU Supervisor And External NVSRAM Control, 3V Vcc

The BQ4802Y BQ4802LY Parallel Real-Time Clock with CPU supervisor and External SRAM Non-Volatile 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 provides direct connections for a 32.768-kHz quartz crystal and a 3-V backup battery. Through the use of the conditional chip enable output (CEOUT) and battery voltage output (VOUT) pins, the BQ4802Y BQ4802LY CAN write-protect and make non- volatile external SRAMs The backup cell powers the Real-Time Clock and maintains SRAM information the absence of system voltage. The crystal and battery are contained within the modules for a more integrated solution.
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.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
BQ4802LYDWG4 Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-SOIC 0 to 70
BQ4802LYDSH Texas Instruments 1 TIMER(S), REAL TIME CLOCK, PDSO28, PLASTIC, SOP-28
BQ4802LYDWR Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-SOIC 0 to 70
BQ4802LYPWG4 Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-TSSOP 0 to 70
BQ4802LYDWRG4 Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-SOIC 0 to 70
BQ4802LYPWR Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-TSSOP 0 to 70
BQ4802LYDW Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-SOIC 0 to 70
BQ4802LYPW Texas Instruments Y2K-Compliant Parallel RTC with CPU Supervisor and External NVSRAM Control, 3V Vcc 28-TSSOP 0 to 70
BQ4802LYPWRG4 Texas Instruments 1 TIMER(S), REAL TIME CLOCK, PDSO28, GREEN, PLASTIC, TSSOP-28
BQ4802LY 's PackagesBQ4802LY 's pdf datasheet
BQ4802LYDW SOIC
BQ4802LYDWG4 SOIC
BQ4802LYDWR SOIC
BQ4802LYDWRG4 SOIC
BQ4802LYPW TSSOP
BQ4802LYPWG4 TSSOP
BQ4802LYPWR TSSOP
BQ4802LYPWRG4 TSSOP




BQ4802LY Pinout, Pinouts
BQ4802LY pinout,Pin out
This is one package pinout of BQ4802LY,If you need more pinouts please download BQ4802LY's pdf datasheet.

BQ4802LY Application circuits
BQ4802LY circuits
This is one application circuit of BQ4802LY,If you need more circuits,please download BQ4802LY's pdf datasheet.


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