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даташит DS1339 PDF ( Datasheet )

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Номер произв DS1339
Описание I2C Serial Real-Time Clock
Производители Maxim Integrated
логотип Maxim Integrated логотип 



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DS1339 Даташит, Описание, Даташиты
GENERAL DESCRIPTION
The DS1339 serial real-time clock (RTC) is a low-
power clock/date device with two programmable time-
of-day alarms and a programmable square-wave
output. Address and data are transferred serially
through an I2C bus. The clock/date provides seconds,
minutes, hours, day, date, month, and year
information. The date at the end of the month is
automatically adjusted for months with fewer than 31
days, including corrections for leap year. The clock
operates in either the 24-hour or 12-hour format with
AM/PM indicator. The DS1339 has a built-in power-
sense circuit that detects power failures and
automatically switches to the backup supply,
maintaining time, date, and alarm operation.
APPLICATIONS
Handhelds (GPS, POS Terminals)
Consumer Electronics (Set-Top Box, Digital
Recording, Network Appliance)
Office Equipment (Fax/Printers, Copier)
Medical (Glucometer, Medicine Dispenser)
Telecommunications (Routers, Switches, Servers)
Other (Utility Meter, Vending Machine, Thermostat,
Modem)
Pin Configurations appear at end of data sheet.
DS1339
I2C Serial Real-Time Clock
BENEFITS AND FEATURES
Completely Manages All Timekeeping
Functions
o Real-Time Clock Counts Seconds,
Minutes, Hours, Date of the Month,
Month, Day of the Week, and Year
with Leap-Year Compensation Valid
Up to 2100
o Two Time-of-Day Alarms
o Programmable Square-Wave Output
o Oscillator Stop Flag
Interfaces to Most Microcontrollers
o I2C Serial Interface
Low-Power Operation Extends Battery
Backup Run Time
o Automatic Power-Fail Detect and
Switch Circuitry
o Trickle-Charge Capability
Underwriters Laboratories® (UL)
Recognized
Surface-Mount Package with an
Integrated Crystal (DS1339C Saves
Additional Space and Simplifies Design
ORDERING INFORMATION
PART
DS1339C-2#
DS1339C-3#
DS1339C-33#
DS1339U-2+
DS1339U-3+
DS1339U-33+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
VOLTAGE (V)
2.0
3.0
3.3
2.0
3.0
3.3
PIN-PACKAGE
16 SO (300 mils)
16 SO (300 mils)
16 SO (300 mils)
8 µSOP
8 µSOP
8 µSOP
TOP MARK
DS1339C-2
DS1339C-3
DS1339C-33
1339 rr-2
1339 rr-3
1339 rr-33
+Denotes a lead(Pb)-free/RoHS-compliant package.
#Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. The lead finish is JESD97 category
e3, and is compatible with both lead-based and lead-free soldering processes.
A “+” anywhere on the top mark indicates a lead(Pb)-free device. A “#” denotes a RoHS-compliant device. rr = second line, revision code
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19-5770; Rev 3/15









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DS1339 Даташит, Описание, Даташиты
DS1339 I2C Serial Real-Time Clock
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground………………………………………………………………-0.3V to +6.0V
Operating Temperature Range (Noncondensing)………………………………………………………….-40°C to +85°C
Storage Temperature Range………………………………………………………………………………..-55°C to +125°C
Lead Temperature (soldering, 10s)...…………………………………………………………………………………+260°C
Soldering Temperature (reflow).……………………………………………………………………………………….+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
µSOP
Junction-to-Ambient Thermal Resistance (θJA).…………………...……………………………………….206.3°C/W
Junction-to-Case Thermal Resistance (θJC)……………………………………………………………………42°C/W
SO
Junction-to-Ambient Thermal Resistance (θJA).……………………………………………………………….73°C/W
Junction-to-Case Thermal Resistance (θJC)……………………………………………………………………23°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
RECOMMENDED DC OPERATING CONDITIONS
(TA = -40°C to +85°C) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage
DS1339-2
VCC DS1339-3
DS1339-33
Backup Supply Voltage
VBACKUP
Logic 1
VIH
Logic 0
Power-Fail Voltage
VIL
DS1339-2
VPF DS1339-3
DS1339-33
MIN
1.8
2.7
2.97
1.3
0.7 x
VCC
-0.3
1.58
2.45
2.70
TYP
2.0
3.0
3.3
3.0
1.70
2.59
2.85
MAX
5.5
5.5
5.5
3.7
VCC +
0.3
+0.3 x
VCC
1.80
2.70
2.97
UNITS
V
V
V
V
V
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DS1339 Даташит, Описание, Даташиты
DC ELECTRICAL CHARACTERISTICS
(VCC = MIN to MAX, TA = -40°C to +85°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Input Leakage
I/O Leakage
Logic 0 Out
VOL = 0.4V; VCC > VCC MIN (-3, -33);
VCC ≥ 2.0V (-2)
Logic 0 Out
VOL = 0.2 (VCC);
1.8V < VCC < 2.0V (DS1339-2)
Logic 0 Out
VOL = 0.2 (VCC);
1.3V < VCC < 1.8V (DS1339-2)
VCC Active Current
VCC Standby Current (Note 6)
Trickle-Charger Resistor Register
10h = A5h, VCC = Typ, VBACKUP = 0V
Trickle-Charger Resistor Register
10h = A6h, VCC = Typ, VBACKUP = 0V
Trickle-Charger Resistor Register
10h = A7h, VCC = Typ, VBACKUP = 0V
VBACKUP Leakage Current
ILI (Note 3)
ILO (Note 4)
IOL (Note 4)
IOL (Note 4)
IOL (Note 4)
ICCA (Note 5)
-2: VCC = 2.2V
ICCS -3: VCC = 3.3V
-33: VCC = 5.5V
R1 (Note 7)
R2
R3
IBKLKG
DC ELECTRICAL CHARACTERISTICS
(VCC = 0V, TA = -40°C to +85°C.) (Note 2)
PARAMETER
SYMBOL
VBACKUP Current EOSC = 0, SQW Off
VBACKUP Current EOSC = 0, SQW On
VBACKUP Current EOSC = 1
IBKOSC
IBKSQW
IBKDR
CONDITIONS
(Note 8)
(Note 8)
DS1339 I2C Serial Real-Time Clock
MIN TYP MAX UNITS
1 µA
1 µA
3 mA
3 mA
60
80
250
2000
4000
25
250
450
100
150
200
100
µA
µA
µA
nA
MIN TYP MAX UNITS
400 700
nA
600 1000
nA
10 100 nA
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