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DS1678S

Description
Real Time Clock
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size261KB,25 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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DS1678S Overview

Real Time Clock

DS1678S Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOIC
package instruction0.208 INCH, SOP-8
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
maximum clock frequency0.032 MHz
Information access methodsI2C
interrupt capabilityY
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length5.31 mm
Humidity sensitivity level1
Number of terminals8
Number of timers
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.3
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)240
power supply5 V
Certification statusNot Qualified
Maximum seat height2.13 mm
Maximum supply voltage5.5 V
Minimum supply voltage4.5 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
shortest timeSECONDS
Maximum time at peak reflow temperature20
VolatileNO
width5.285 mm
uPs/uCs/peripheral integrated circuit typeTIMER, REAL TIME CLOCK
DS1678
Real-Time Event Recorder
www.maxim-ic.com
GENERAL DESCRIPTION
The DS1678 real-time clock (RTC) event recorder
records the time and date of a nonperiodic,
asynchronous event each time the
INT
pin is
activated. The device records the seconds, minutes,
hours, date, day of the week, month, year, and
century when the first event occurs, and starts the 16-
bit elapsed time counter (ETC). Subsequent events
trigger the recording of the ETC into the event-log
memory. This allows for up to 1025 events to be
logged. Events can be logged while the device is
operating from either V
CC
or V
BAT
.
FEATURES
Real-Time Clock/Calendar in Binary-Coded
Decimal (BCD) Format Counts Seconds,
Minutes, Hours, Date, Month, Day of the
Week, and Year with Leap Year
Compensation and is Year 2000 Compliant
Logs Up to 1025 Consecutive Events in Read-
Only Battery-Backed Memory
User-Programmable Event Trigger can be
Triggered by the Falling Edge, Rising Edge,
or Rising and Falling Edges of the
INT
Pin
Event Counter Register Provides Data on the
Number of Events that Have Been Logged in
the Current Event-Logging Mission
Programmable RTC Alarm
32-Byte, Battery-Backed, General-Purpose
NV RAM
TYPICAL OPERATING CIRCUIT
I
2
C*
Serial Interface
Three Resolution Options for Trade-Off
Accuracy vs. Maximum Time Between Events
-40C to +85C Industrial Temperature
Range
Underwriters Laboratory (UL) Recognized
TOP MARK
††
DS1678
DS1678
DS1678S
DS1678S
DS1678S
DS1678S
ORDERING INFORMATION
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
8 SO (Tape and
DS1678S/T&R
Reel)
8 SO (Tape and
DS1678S+T&R
Reel)
PART
DS1678
DS1678+
DS1678S
DS1678S+
PIN CONFIGURATION
TOP VIEW
X1
X2
V
BAT
GND
1
2
3
4
DS1678
8
7
6
5
V
CC
INT
SCL
SDA
All devices are specified over the -40°C to +85°C operating
range.
††
A “‘+” anywhere on the top mark denotes a lead(Pb)-free
device.
+
Denotes a lead(Pb)-free/RoHS-compliant device.
fd
AI
PI
tI
ds.
*
I CI
2
2
2
2
Cs
2
PDIP (300 mils)
SO (208 mils)
Cs
Cd
C
1 of 25
REV: 100405

DS1678S Related Products

DS1678S DS1678
Description Real Time Clock Real Time Clock Real-Time Event Recorder
Is it Rohs certified? incompatible incompatible
Maker Maxim Maxim
Parts packaging code SOIC DIP
package instruction 0.208 INCH, SOP-8 0.300 INCH, PLASTIC, DIP-8
Contacts 8 8
Reach Compliance Code not_compliant not_compliant
ECCN code EAR99 EAR99
maximum clock frequency 0.032 MHz 0.032 MHz
Information access methods I2C I2C
interrupt capability Y Y
JESD-30 code R-PDSO-G8 R-PDIP-T8
JESD-609 code e0 e0
length 5.31 mm 9.375 mm
Humidity sensitivity level 1 1
Number of terminals 8 8
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP DIP
Encapsulate equivalent code SOP8,.3 DIP8,.3
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE IN-LINE
Peak Reflow Temperature (Celsius) 240 245
power supply 5 V 5 V
Certification status Not Qualified Not Qualified
Maximum seat height 2.13 mm 4.572 mm
Maximum supply voltage 5.5 V 5.5 V
Minimum supply voltage 4.5 V 4.5 V
Nominal supply voltage 5 V 5 V
surface mount YES NO
technology CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING THROUGH-HOLE
Terminal pitch 1.27 mm 2.54 mm
Terminal location DUAL DUAL
shortest time SECONDS SECONDS
Maximum time at peak reflow temperature 20 NOT SPECIFIED
Volatile NO NO
width 5.285 mm 7.62 mm
uPs/uCs/peripheral integrated circuit type TIMER, REAL TIME CLOCK TIMER, REAL TIME CLOCK
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