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DS1821 Datasheet(PDF) 16 Page - Dallas Semiconductor

Part # DS1821
Description  Programmable Digital Thermostat and Thermometer
PDF  18 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1821 Datasheet(HTML) 16 Page - Dallas Semiconductor

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DS1821
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AC ELECTRICAL CHARACTERISTICS:
(-55°C to +125°C; VDD=3.6V to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Temperature Conversion Time
tCONV
0.4
1.0
s
EEPROM Write Time
tWR
10
50
ms
Time Slot
tSLOT
60
120
µs
1
Recovery Time
tREC
1
µs
1
Write 0 Low Time
tLOW0
60
120
µs
1
Write 1 Low Time
tLOW1
1
15
µs
1
Read Data Valid
tRDV
15
µs
1
Reset Time High
tRSTH
480
µs
1
Reset Time Low
tRSTL
480
µs
1,2
Presence Detect High
tPDHIGH
15
60
µs
1
Presence Detect Low
tPDLOW
60
240
µs
1
VDD Low to Mode Toggle Clock Low
tPC
100
ns
1,3
Mode Toggle Clock 16 High to VDD
High
tCP
100
ns
1
Mode Toggle Clock Pulse Low Time
tCL
0.1
10
µs
1
Mode Toggle Clock Pulse High Time
tCH
0.1
µs
1
Mode Toggle Clock High-to-Low or
Low-to-High Transition Time
tT
100
ns
1
Capacitance
CIN/OUT
25
pF
NOTES:
1. Refer to timing diagrams in Figure 13.
2. If tRSTL > 960 μs, a power-on-reset may occur.
3. Time required for part to disable thermostat output.



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