28 Terminations 5V 28 Pin DS1644 Real Time Clocks Leap Year, NVSRAM
SOT-23
DS1644-120+ Datasheet
non-compliant
In-Stock: 0 items
Specifications
Name
Value
Type
Parameter
Mounting Type
Through Hole
Package / Case
28-DIP Module (0.600, 15.24mm)
Surface Mount
NO
Number of Pins
28
Operating Temperature
0°C~70°C
Packaging
Tube
Published
2005
JESD-609 Code
e3
Feature
Leap Year, NVSRAM
Pbfree Code
yes
Part Status
Obsolete
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Number of Terminations
28
ECCN Code
EAR99
Type
Clock/Calendar
Terminal Finish
Matte Tin (Sn)
HTS Code
8473.30.11.80
Voltage - Supply
4.5V~5.5V
Terminal Position
DUAL
Peak Reflow Temperature (Cel)
NOT SPECIFIED
Supply Voltage
5V
Terminal Pitch
2.54mm
Reach Compliance Code
not_compliant
Time@Peak Reflow Temperature-Max (s)
NOT SPECIFIED
Base Part Number
DS1644
Pin Count
28
Qualification Status
Not Qualified
Power Supplies
5V
Interface
Parallel
Memory Size
32KB
Access Time
120 ns
External Data Bus Width
8
Time Format
HH:MM:SS (24 hr)
Date Format
YY-MM-DD-dd
Current - Timekeeping (Max)
4mA @ 4.5V~5.5V
Time-Min
SECONDS
Interrupt Capability
N
Volatile
NO
RoHS Status
ROHS3 Compliant
Lead Free
Lead Free
DS1644-120+ Product Details
DS1644-120+ Overview
The package 28-DIP Module (0.600, 15.24mm) contains real time clocks.The package is in the form of Tube.This electrical RTC has a supply voltage of 4.5V~5.5V.This electrical real time clock has the type Clock/Calendar.Through Hole is the way this real time clock (RTC) is mounted.Electronic time clocks are recommended that the operating temperature be 0°C~70°C.When operating, Leap Year, NVSRAM can be ensured.It is possible to terminate a transmission line with a RTC module that matches the characteristic impedance of the line, which is known as 28 termination.Obviously, a voltage of 5V is being supplied to this electronic component.There are 28 pins on it.The family RTCs belongs to are DS1644.For storing data and programs, the RTC times embed a memory of 32KB.There are 5V power supplies attached to it.It is equipped with 28 pins.