DS12885T+ Overview
In the 32-TQFP package, real time clocks is embedded as a dependency.Tray is the package format.In this electrical RTC, the supply voltage is 4.5V~5.5V.Clock/Calendar is the type of electrical real time clock that is being used.As you can see from the diagram, this electronic component is mounted in the way of Surface Mount.There should be 0°C~70°C operating temperature.When operating, electronic time clocks are possible to ensure that Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output are maintained.When a transmission line is terminated with 32 terminations, it means that the RTC module that terminates the line matches its characteristic impedance.It should be noted that this RTC real time clock is being supplied with 5V voltage at the moment.A total of 32 pins are equipped with the RTCs.The family in which RTCs belongs are DS12885.A voltage of 2.5V~4V is supplied to this electrical digital time clock.RTC times embed a memory of 114B for storing programs and data.The frequency of real time clocks' output should not exceed 0.032MHz.In order for it to be powered, it requires a power supply of 5V.When an input signal is received, 1 timers are used to output a signal at a preset time.The DAYLIGHT SAVINGS OPTION; SELECTABLE MOTOROLA/INTEL TIMING characteristics are also present.
DS12885T+ Features
32-TQFP package
32 terminations
32 pin count
5V power supplies

DS12885T+ Applications
There are a lot of Maxim Integrated
DS12885T+ Real Time Clocks applications.

Digital video camera
Printers
Copy machines
Mobile equipment
Battery powered devices
Printers and copiers
Electronic metering
Digital cameras
White goods
Elapsed time counter

Factory Lead Time	6 Weeks
Mounting Type	Surface Mount
Package / Case	32-TQFP
Surface Mount	YES
Operating Temperature	0°C~70°C
Packaging	Tray
Published	2003
JESD-609 Code	e3
Feature	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	32
ECCN Code	EAR99
Type	Clock/Calendar
Terminal Finish	MATTE TIN
Additional Feature	DAYLIGHT SAVINGS OPTION; SELECTABLE MOTOROLA/INTEL TIMING
HTS Code	8473.30.11.80
Voltage - Supply	4.5V~5.5V
Terminal Position	QUAD
Peak Reflow Temperature (Cel)	260
Supply Voltage	5V
Terminal Pitch	0.8mm
Time@Peak Reflow Temperature-Max (s)	30
Base Part Number	DS12885
Pin Count	32
JESD-30 Code	S-PQFP-G32
Qualification Status	Not Qualified
Power Supplies	5V
Interface	Parallel
Memory Size	114B
Clock Frequency	0.032MHz
External Data Bus Width	8
Number of Timers	1
Time Format	HH:MM:SS (12/24 hr)
Date Format	YY-MM-DD-dd
Current - Timekeeping (Max)	15mA @ 4.5V~5.5V
Time-Min	SECONDS
Interrupt Capability	Y
Voltage - Supply, Battery	2.5V~4V
Volatile	YES
Length	7mm
Height Seated (Max)	1.2mm
Width	7mm
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free
Contact Plating	Tin
Mount	Surface Mount
Number of Pins	32
Supplier Device Package	32-TQFP (7x7)
Mounting Style	SMD/SMT
RoHS	Compliant
Package	Tray
Base Product Number	DS12885
Mfr	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete
Maximum Operating Temperature	+ 70 C
Supply Voltage - Max	5.5 V
Minimum Operating Temperature	0 C
Supply Voltage - Min	4.5 V
RTC Bus Interface	Multiplexed
RTC Memory Size	114 B
Battery Backup Switching	Backup Switching
Operating Temperature	0°C ~ 70°C
Series	-
Max Operating Temperature	70 °C
Min Operating Temperature	0 °C
Subcategory	Clock & Timer ICs
Voltage - Supply	4.5V ~ 5.5V
Function	Alarm, Calendar, Clock
Operating Supply Voltage	5 V
Max Supply Voltage	5.5 V
Min Supply Voltage	4.5 V
Memory Size	114 B
Logic Function	Clock
Product Type	Real Time Clocks
Current - Timekeeping (Max)	15mA @ 4.5V ~ 5.5V
Voltage - Supply, Battery	2.5V ~ 4V
Features	Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
Radiation Hardening	No
Lead Free	Contains Lead