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BQ4802YDW - 28-SSOP

BQ4802YDW

Active
Texas Instruments

Y2K-COMPLIANT PARALLEL RTC WITH CPU SUPERVISOR AND EXTERNAL NVSRAM CONTROL, 5V VCC

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Search across all available documentation for this part.

DocumentsParallel Real-Time Clock with CPU Supervisor and External SRAM Non-Volatile datasheet (Rev. C)
BQ4802YDW - 28-SSOP

BQ4802YDW

Active
Texas Instruments

Y2K-COMPLIANT PARALLEL RTC WITH CPU SUPERVISOR AND EXTERNAL NVSRAM CONTROL, 5V VCC

Deep-Dive with AI

DocumentsParallel Real-Time Clock with CPU Supervisor and External SRAM Non-Volatile datasheet (Rev. C)

Technical Specifications

Parameters and characteristics commom to parts in this series

SpecificationBQ4802YDWBQ4802 Series
Current - Timekeeping (Max)1.5 mA1.5 mA
FeaturesAlarm, Watchdog Timer, Leap Year, Daylight Savings, SupervisorAlarm, Watchdog Timer, Leap Year, Daylight Savings, Supervisor
InterfaceParallelParallel
Mounting TypeSurface MountSurface Mount
Operating Temperature [Max]70 ░C70 ░C
Operating Temperature [Min]0 °C0 °C
Package / Case0.295 "0.295 - 4.4 mm
Package / Case28-SOIC28-SOIC, SNAPHAT Sockets, 28-TSSOP
Package / Case7.5 mm7.5 mm
Package / Case-0.345 in
Package / Case-8.77 mm
Package / Case-0.173 in
Supplier Device Package28-SOIC28-SOP, 28-TSSOP, 28-SOIC
Time FormatHH:MM:SS (12/24 hr)HH:MM:SS (12/24 hr)
TypeClock/CalendarClock/Calendar
Voltage - Supply [Max]5.5 V3.6 - 5.5 V
Voltage - Supply [Min]4.5 V2.7 - 4.5 V
Voltage - Supply, Battery [Max]4 V4 V
Voltage - Supply, Battery [Min]2.4 V2.4 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyTube 60$ 16.18
Texas InstrumentsTUBE 1$ 15.94
100$ 12.99
250$ 10.21
1000$ 8.66

BQ4802 Series

IC RTC CLK/CALENDAR PAR 28SOP

PartPackage / Case [y]Package / CasePackage / Case [y]Operating Temperature [Max]Operating Temperature [Min]Current - Timekeeping (Max)Voltage - Supply [Max]Voltage - Supply [Min]Mounting TypeFeaturesTypeTime FormatVoltage - Supply, Battery [Max]Voltage - Supply, Battery [Min]InterfaceSupplier Device PackagePackage / CasePackage / CasePackage / Case
Texas Instruments
BQ4802YDSH
0.345 in
28-SOIC, SNAPHAT Sockets
8.77 mm
70 ░C
0 °C
1.5 mA
5.5 V
4.5 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOP
Texas Instruments
BQ4802LYPWG4
28-TSSOP
70 ░C
0 °C
1.5 mA
3.6 V
2.7 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-TSSOP
4.4 mm
0.173 in
Texas Instruments
BQ4802LYDSH
0.345 in
28-SOIC, SNAPHAT Sockets
8.77 mm
70 ░C
0 °C
1.5 mA
3.6 V
2.7 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOP
Texas Instruments
BQ4802YPWR
28-TSSOP
70 ░C
0 °C
1.5 mA
5.5 V
4.5 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-TSSOP
4.4 mm
0.173 in
Texas Instruments
BQ4802LYDWRG4
28-SOIC
70 ░C
0 °C
1.5 mA
3.6 V
2.7 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOIC
0.295 "
7.5 mm
Texas Instruments
BQ4802YDWRG4
28-SOIC
70 ░C
0 °C
1.5 mA
5.5 V
4.5 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOIC
0.295 "
7.5 mm
Texas Instruments
BQ4802LYDW
28-SOIC
70 ░C
0 °C
1.5 mA
3.6 V
2.7 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOIC
0.295 "
7.5 mm
Texas Instruments
BQ4802YDW
28-SOIC
70 ░C
0 °C
1.5 mA
5.5 V
4.5 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOIC
0.295 "
7.5 mm
Texas Instruments
BQ4802LYPW
28-TSSOP
70 ░C
0 °C
1.5 mA
3.6 V
2.7 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-TSSOP
4.4 mm
0.173 in
Texas Instruments
BQ4802YDWR
28-SOIC
70 ░C
0 °C
1.5 mA
5.5 V
4.5 V
Surface Mount
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Clock/Calendar
HH:MM:SS (12/24 hr)
4 V
2.4 V
Parallel
28-SOIC
0.295 "
7.5 mm

Description

General part information

BQ4802 Series

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 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 (CE\OUT) 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 VCCrises within tolerance, to allow for power supply and processor stabilization. The reset function also allows for an external push-button override.