DS1720STR 查看數據表（PDF） - Maxim Integrated
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DS1720STR Datasheet PDF : 14 Pages
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AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Temperature Conversion TTC
Time
Data to CLK Setup
CLK to Data Hold
CLK to Data Delay
CLK Low Time
CLK High Time
CLK Frequency
CLK Rise and Fall
RST to CLK Setup
tDC
35
tCDH
40
tCDD
tCL
285
tCH
285
tCLK
DC
tR, tF
tCC
100
CLK to RST Hold
tCCH
40
RST Inactive Time
tCWH
125
CLK High to I/O High-Z
tCDZ
RST Low to I/O High-Z
tRDZ
Convert Pulse Width
Input Capacitance
I/O Capacitance
tCNV
CI
CI/O
250 ns
DS1720
(-55°C to +125°C; VDD=2.7V to 5.5V)
TYP
MAX
UNITS NOTES
750
ms
ns
5
ns
5
150
ns
5, 6, 7
ns
5
ns
5
1.75
MHz
5
500
ns
ns
5
ns
5
ns
5, 8
50
ns
5
50
ns
5
500 ms
9
5
pF
10
pF
EEPROM AC ELECTRICAL CHARACTERISTICS
(-55°C to +125°C; VDD=2.7V to 5.5V)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
EEPROM Write Cycle Time
10
ms
EEPROM Writes
-55°C to +55°C
50k
Writes
EEPROM Data Retention
-55°C to +55°C
10
Years
NOTES:
1. All voltages are referenced to ground.
2. Logic one voltages are specified at a source current of 1 mA.
3. Logic zero voltages are specified at a sink current of 4 mA.
4. ISTBY, ICC specified with DQ, CLK/ CONV = VDD, and RST = GND.
5. Measured at VIH = 2.0V or VIL = 0.6V.
6. Measured at VOH = 2.4V or VOL = 0.4V.
7. Load capacitance = 50 pF.
8. tCWH must be 10 ms minimum following any write command that involves the E2 memory.
9. 250ns is the guaranteed minimum pulse width for a conversion to start; however, a smaller pulse
width may start a conversion.
10. Drift data is based on a 1000hr stress test at +125°C with VDD = 5.5V.
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