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DS3234S Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # DS3234S
Description  Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS3234S Datasheet(HTML) 3 Page - Maxim Integrated Products

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Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
_____________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.0V 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. TCXO operation guaranteed from 2.3V to 5.5V on VCC and 2.3V to 3.8V on
VBAT.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Logic 0 Output, 32kHz
VOL
IOL = 1mA
0.4
V
Logic 1 Output, DOUT
VOH
IOH = -1.0mA
0.85 x VCC
V
Logic 0 Output, DOUT, INT/SQW
VOL
IOL = 3mA
0.4
V
Logic 0 Output, RST
VOL
IOL = 1.0mA
0.4
V
Output Leakage Current 32kHz,
INT/SQW, DOUT
ILO
Output high impedance
-1
0
+1
µA
Input Leakage DIN, CS, SCLK
ILI
-1
+1
µA
RST Pin I/O Leakage
IOL
RST high impedance (Note 6)
-200
+10
µA
TCXO (VCC = 2.3V to 5.5V, VBAT = 2.3V to 3.8V, TA = -40
°C to +85°C, unless otherwise noted.) (Notes 2 and 3)
Output Frequency
fOUT
VCC = 3.3V or VBAT = 3.3V
32.768
kHz
0°C to +40°C
-2
+2
Frequency Stability vs.
Temperature
Δf/fOUT
VCC = 3.3V or
VBAT = 3.3V
-40°C to 0°C and
+40°C to +85°C
-3.5
+3.5
ppm
Frequency Stability vs. Voltage
Δf/V
1
ppm/V
-40°C
0.7
+25°C
0.1
+70°C
0.4
Trim Register Frequency
Sensitivity per LSB
Δf/LSB
Specified at:
+85°C
0.8
ppm
Temperature Accuracy
Temp
-3
+3
°C
First year
±1.0
Crystal Aging
Δf/fOUT
After reflow,
not production tested
0–10 years
±5.0
ppm
ELECTRICAL CHARACTERISTICS
(VCC = 0V, VBAT = 2.0V to 3.8V, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VBAT = 3.4V
1.5
2.3
Timekeeping Battery Current
(Note 5)
IBATT
EOSC = 0, BBSQW = 0,
CRATE1 = CRATE0 = 0
VBAT = 3.8V
1.5
2.5
µA
Temperature Conversion Current
IBATTC
EOSC = 0, BBSQW = 0
400
µA
Data-Retention Current
IBATTDR
EOSC = 1
100
nA


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