DS3234 Maxim, DS3234 Datasheet - Page 3

• Manufacturer Part Number: DS3234
• Description: The DS3234 is a low-cost, extremely accurate SPI™ bus real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
3.3V, V
V
ELECTRICAL CHARACTERISTICS
(V
Logic 0 Output, 32kHz
Logic 1 Output, DOUT
Logic 0 Output, DOUT, INT/SQW
Logic 0 Output, RST
Output Leakage Current 32kHz,
INT/SQW, DOUT
Input Leakage DIN, CS, SCLK
RST Pin I/O Leakage
TCXO (V
Output Frequency
Frequency Stability vs.
Temperature
Frequency Stability vs. Voltage
Trim Register Frequency
Sensitivity per LSB
Temperature Accuracy
Crystal Aging
Timekeeping Battery Current
(Note 5)
Temperature Conversion Current
Data-Retention Current
BAT
CC
CC
.) (Notes 2, 3)
= 2.0V to 5.5V, V
= 0V, V
BAT
CC
PARAMETER
PARAMETER
= 3.0V, and T
BAT
= 2.3V to 5.5V, V
= 2.0V to 3.8V, T
CC
A
= active supply (see Table 1), T
= +25°C, unless otherwise noted. TCXO operation guaranteed from 2.3V to 5.5V on V
Extremely Accurate SPI Bus RTC with
BAT
A
= 2.3V to 3.8V, T
= -40°C to +85°C, unless otherwise noted.) (Note 2)
SYMBOL
SYMBOL
I
Δf/f
Δf/f
Δf/LSB
BATTDR
I
Temp
I
BATTC
f
V
V
V
V
Δf/V
BATT
OUT
I
I
I
LO
OL
OH
OL
OL
OL
LI
OUT
OUT
_____________________________________________________________________
I
I
I
I
Output high impedance
RST high impedance (Note 6)
V
V
V
Specified at:
After reflow,
not production tested
EOSC = 0, BBSQW = 0,
CRATE1 = CRATE0 = 0
EOSC = 0, BBSQW = 0
EOSC = 1
OL
OH
OL
OL
CC
CC
BAT
A
Integrated Crystal and SRAM
= 1mA
= 3mA
= 1.0mA
= -1.0mA
= -40°C to +85°C, unless otherwise noted.) (Notes 2 and 3)
= 3.3V or V
= 3.3V or
= 3.3V
A
= -40°C to +85°C, unless otherwise noted.) (Typical values are at V
CONDITIONS
CONDITIONS
BAT
= 3.3V
-40°C
+25°C
+70°C
+85°C
First year
0–10 years
0°C to +40°C
-40°C to 0°C and
+40°C to +85°C
V
V
BAT
BAT
= 3.4V
= 3.8V
0.85 x V
-200
MIN
MIN
-3.5
-1
-1
-2
-3
CC
32.768
±1.0
±5.0
TYP
TYP
0.7
0.1
0.4
0.8
1.5
1.5
0
1
CC
and 2.3V to 3.8V on
MAX
+3.5
MAX
+10
400
100
0.4
0.4
0.4
+1
+1
+2
+3
2.3
2.5
UNITS
ppm/V
UNITS
ppm
ppm
ppm
kHz
µA
µA
µA
°C
µA
µA
nA
V
V
V
V
CC
3
=