Rainbow-electronics DS3904 Bedienungsanleitung PDF herunterladen (Seite 3)

DS3904

DS3904 Triple 128-Position Nonvolatile

Variable Digital Resistor/Switch

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AC ELECTRICAL CHARACTERISTICS

= +2.7V to +5.5V, T

= -40°C to +85°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Fast mode (Note 7) 0 400

SCL Clock Frequency f

SCL

Standard mode (Note 7) 0 100

kHz

Fast mode (Note 7) 1.3

Bus Free Time between STOP

and START Conditions

BUF

Standard mode (Note 7) 4.7

µs

Fast mode (Notes 7, 8) 0.6

Hold Time (Repeated) START

Condition

HD:STA

Standard mode (Notes 7, 8) 4.0

µs

Fast mode (Note 7) 1.3

Low Period of SCL Clock t

LOW

Standard mode (Note 7) 4.7

µs

Fast mode (Note 7) 0.6

High Period of SCL Clock t

HIGH

Standard mode (Note 7) 4.0

µs

Fast mode (Notes 7, 9, 10) 0 0.9

Data Hold Time

HD:DAT

Standard mode (Notes 7, 9, 10) 0 0.9

µs

Fast mode (Note 7)

100

Data Setup Time

SU:DAT

Standard mode (Note 7)

250

Fast mode 0.6

Start Setup Time

SU:STA

Standard mode 4.7

µs

Fast mode (Note 11)

20 + 0.1C

300

Rise Time of Both SDA and SCL

Signals

Standard mode (Note 11)

20 + 0.1C

1000

Fast mode (Note 11)

20 + 0.1C

300

Fall Time of Both SDA and SCL

Signals

Standard mode (Note 11)

20 + 0.1C

300

Fast mode 0.6

Setup Time for STOP Condition

SU:STO

Standard mode 4.0

µs

Capacitive Load for Each Bus

Line

(Note 11) 400 pF

EEPROM Write Time t

(Note 12) 20 ms

Startup Time t

2ms

NONVOLATILE MEMORY CHARACTERISTICS

= +2.7V to +5.5V, T

= -40°C to +85°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Writes 85°C

50,000

1 2 3 4 5 6 7 8 9 10 11

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