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DS1855 Datasheet(PDF) 14 Page - Dallas Semiconductor

Part # DS1855
Description  Dual Nonvolatile Digital Potentiometer and Secure Memory
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1855 Datasheet(HTML) 14 Page - Dallas Semiconductor

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DS1855
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AC ELECTRICAL CHARACTERISTICS
(-40°C to +85°C, VCC = 2.7V to 5.5V)
PARAMETER
SYMBOL CONDITION
MIN
TYP
MAX
UNITS NOTES
SCL Clock Frequency
fSCL
Fast Mode
Standard Mode
0
0
400
100
kHz
4
Bus Free Time Between
STOP and START
t
BUF
Fast Mode
Standard Mode
1.3
4.7
ms
4
Hold Time (repeated)
START Condition
t
HD:STA
Fast Mode
Standard Mode
0.6
4.0
ms
4,5
Low Period of SCL
Clock
t
LOW
Fast Mode
Standard Mode
1.3
4.7
ms
4
High Period of SCL
Clock
t
HIGH
Fast Mode
Standard Mode
0.6
4.0
ms
4
Data Hold Time
t
HD:DAT
Fast Mode
Standard Mode
0
0
0.9
0.9
ms
4,6
Data Set-Up Time
t
SU:DAT
Fast Mode
Standard Mode
100
250
ns
4
Start Set-Up Time
t
SU:STA
Fast Mode
Standard Mode
0.6
4.7
ms
4
Rise Time of Both SDA
and SCL Signals
t
R
Fast Mode
Standard Mode
20+0.1CB
300
1000
ns
4
Fall Time of Both SDA
and SCL Signals
t
F
Fast Mode
Standard Mode
20+0.1CB
300
300
ns
7
Set-Up Time for STOP
Condition
t
SU:STO
Fast Mode
Standard Mode
0.6
4.0
ms
Capacitive Load for
Each Bus Line
C
B
400
pF
7
EEPROM Write Time
TW
2.5
10
ms
8
NONVOLATILE MEMORY CHARACTERISTICS
PARAMETER
SYMBOL CONDITION
MIN
TYP
MAX
UNITS
Writes
+85°C
50,000


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