DS4301 查看數據表（PDF） - Maxim Integrated
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DS4301 Datasheet PDF : 7 Pages
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Nonvolatile, 32-Position Digital Potentiometer
AC ELECTRICAL CHARACTERISTICCS
(VCC = VCC MIN to VCC MAX; TA = -40°C to +85°C. See Figure 2 for timing diagram.)
PARAMETER
CS to INC Setup
U/D to INC Setup
INC Low Period
INC High Period
INC Inactive to CS Inactive
CS Deselect Time
Wiper Change to INC Low
INC Rise and Fall Times
INC Low to CS Inactive
Wiper Storage Time
CS Low Pulse
Wiper Load Time
Power-Up Time
SYMBOL
tCI
tDI
tIL
tIH
tIC
tCPH
tIW
tR, tF
tIK
tWST
tCLP
tWLT
tPU
(Note 5)
(Note 6)
(Note 7)
(Note 8)
CONDITIONS
MIN TYP MAX UNITS
50
ns
100
ns
50
ns
100
ns
500
ns
100
ns
200
ns
5
µs
50
ns
10
ms
100
ns
500
µs
2
ms
NONVOLATILE MEMORY CHARACTERISTICS
(VCC = VCC MIN to VCC MAX)
PARAMETER
EEPROM Write Cycles
SYMBOL
CONDITIONS
+70°C (Note 9)
MIN TYP
50,000
MAX
UNITS
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
All voltages are referenced to ground.
STBY specified for VCC equal to 3.0V and 5.0V while control port logic pins are driven to VCC or GND.
Absolute linearity is used to determine wiper voltage versus expected voltage as determined by wiper position.
Relative linearity is used to determine the change of wiper voltage between two adjacent wiper positions.
The INC low to CS inactive time is the transition time that allows the three control pins to become inactive without writing
the wiper position to the EEPROM.
Wiper storage time is the time required for the wiper position to be written to the EEPROM. During this time, the three-ter-
minal interface is inactive.
Wiper load time is specified as the time required to load the wiper position stored in EEPROM once VCC has reached a
stable operating voltage greater than or equal to VCC MIN.
Power-up time is specified as the time required before the three control pins become active once a stable power supply
level of at least VCC MIN has been reached.
The maximum number of EEPROM write cycles is guaranteed by design and is not tested in production.
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