BQ4802LYDW - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

BQ4802LYDW
Manufacturer

TI
ChipWorker Part#

CW12318576
Category

Real Time Clock IC
Package

SOIC-28
Description

Real Time Clock Parallel 16Byte Clock/Calendar/Alarm/Battery Backup/NV SRAM Control 28Pin SOIC Tube
Documentation

Datasheet

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BQ4802LYDW Specifications

Attribute	Attribute Value

Part Number	BQ4802LYDW
Manufacturer	TI
ChipWorker Part#	CW12318576
Category	Real Time Clock IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	28 Pin
Case/Package	SOIC-28
Supply Voltage (DC)	3.00 V
Number of Outputs	8 Output
Number of Positions	28 Position
Access Time(Max)	150 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	2.7V ~ 3.6V
Supply Voltage (Max)	3.6 V
Supply Voltage (Min)	2.7 V
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Size-Height	2.35 mm
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99
HK STC License	NLR

Product 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 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 VCC rises within tolerance, to allow for power supply and processor stabilization. The reset function also allows for an external push-button override.

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