參數(shù)資料
型號(hào)： DS3234
廠商： Maxim Integrated Products, Inc.
英文描述： Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM
中文描述： 高精度、SPI總線RTC，集成晶體和SRAM
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 328K
代理商： DS3234
D
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
2
_____________________________________________________________________
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
Junction Temperature......................................................+125°C
Storage Temperature Range...............................-40°C to +85°C
RECOMMENDED DC OPERATING CONDITIONS
(T
A
= -40°C to +85°C, unless otherwise noted.) (Notes 1, 2)
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.
Soldering Temperature
(leads, 10s) ...........................................................+260°C/10s
Soldering Temperature (reflow, 2 times max) .......See IPC/JEDEC
J-STD-020 Specification
PARAMETER
SYMBOL
V
CC
V
BAT
CONDITIONS
MIN
2.0
2.0
TYP
3.3
3.0
MAX
5.5
3.8
UNITS
Supply Voltage
V
Logic 1 Input
CS
, SCLK, DIN
V
IH
0.7 x
V
CC
V
CC
+
0.3
V
2.0V
≤
V
CC
≤
3.63V
-0.3
+0.2 x
V
CC
+0.7
5.5
Logic 0 Input
CS
, SCLK, DIN,
RST
V
IL
3.63V < V
CC
≤
5.5V
V
CC
= 0V
-0.3
V
Pullup Voltage
INT
/SQW
V
PU
V
ELECTRICAL CHARACTERISTICS
(V
CC
= 2.0V to 5.5V, V
CC
= active supply (see Table 1), T
A
= -40°C to +85°C, unless otherwise noted.) (Typical values are at
V
CC
=
3.3V, V
BAT
= 3.0V
, and T
A
= +25°C, unless otherwise noted. TCXO operation guaranteed from 2.3V to 5.5V on V
CC
and 2.3V to 3.8V on
V
BAT
.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
400
700
UNITS
V
CC
= 3.63V
V
CC
= 5.5V
Active Supply Current
I
CCA
SCLK = 4MHz, BSY = 0
(Notes 3, 4)
μA
V
CC
= 3.63V
120
Standby Supply Current
I
CCS
CS
= V
IH
, 32kHz output off,
SQW output off
(Note 4)
V
CC
= 5.5V
160
μA
V
CC
= 3.63V
V
CC
= 5.5V
500
600
2.70
100
Temperature Conversion Current
I
CCSCONV
SPI bus inactive, 32kHz
output off, SQW output off
μA
Power-Fail Voltage
V
BAT
Leakage Current
(V
CC
= 2.0V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted.) (Notes 1 and 2)
V
PF
2.45
2.575
25
V
nA
I
BATLKG
Logic 1 Output, 32kHz
I
OH
= -500μA
I
OH
= -250μA
I
OH
= -125μA
V
OH
V
CC
> 3.63V,
3.63V > V
CC
> 2.7V,
2.7V > (V
CC
or V
BAT)
> 2.0V
(BB32kHz = 1)
0.85 x V
CC
V
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