DS3232(2010) 查看數據表（PDF） - Maxim Integrated
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DS3232 Datasheet PDF : 19 Pages
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DS3232
Extremely Accurate I2C RTC with
Integrated Crystal and SRAM
ABSOLUTE MAXIMUM RATINGS
Voltage Range on VCC, VBAT, 32kHz, SCL, SDA, RST,
INT/SQW Relative to Ground.............................-0.3V to +6.0V
Junction-to-Ambient Thermal Resistance (θJC) (Note 1)..55.1°C/W
Junction-to-Case Thermal Resistance (θJC) (Note 1)..........24°C/W
Operating Temperature Range
(noncondensing) .............................................-40°C to +85°C
Junction Temperature ......................................................+125°C
Storage Temperature Range ...............................-40°C to +85°C
Lead Temperature (soldering, 10s) .................................+260°C
Soldering Temperature (reflow, 2 times max) ....................+260°C
(See the Handling, PC Board Layout, and Assembly section.)
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.
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
absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
(TA = -40°C to +85°C, unless otherwise noted.) (Notes 2, 3)
PARAMETER
Supply Voltage
SYMBOL
VCC
VBAT
CONDITIONS
Logic 1 Input SDA, SCL
VIH
Logic 0 Input SDA, SCL
VIL
MIN
2.3
2.3
0.7 x
VCC
-0.3
TYP
3.3
3.0
MAX
5.5
5.5
VCC +
0.3
+0.3 x
VCC
UNITS
V
V
V
ELECTRICAL CHARACTERISTICS
(VCC = 2.3V to 5.5V, VCC = active supply (see Table 1), TA = -40°C to +85°C, unless otherwise noted.) (Typical values are at VCC =
3.3V, VBAT = 3.0V, and TA = +25°C, unless otherwise noted.) (Notes 2, 3)
PARAMETER
Active Supply Current
Standby Supply Current
SYMBOL
ICCA
ICCS
CONDITIONS
32kHz output off
(Notes 4, 5)
VCC = 3.3V
VCC = 5.5V
I2C bus inactive, 32kHz
output off, SQW output off
(Note 5)
VCC = 3.3V
VCC = 5.5V
MIN TYP MAX UNITS
200
µA
325
120
µA
160
Temperature Conversion Current
ICCSCONV
I2C bus inactive, 32kHz
output off, SQW output off
VCC = 3.3V
VCC = 5.5V
500
µA
600
Power-Fail Voltage
VPF
2.45 2.575 2.70
V
ACTIVE SUPPLY (Table 1 ) (2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted) (Note 2)
Logic 1 Output, 32kHz
Active supply > 3.3V,
IOH = -1mA
IOH = -0.75mA
VOH 3.3V > active supply > 2.7V,
2.0
2.7V > active supply > 2.3V
V
IOH = -0.14mA
2
Maxim Integrated
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