DS1841 datasheet(4/16 Pages) MAXIM

Part #	DS1841

Description	Temperature-Controlled, NV, I2C, Logarithmic Resistor

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Manufacturer	MAXIM [Maxim Integrated Products]

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Temperature-Controlled, NV, I2C,

Logarithmic Resistor

4

_______________________________________________________________________________________

Note 1: All voltages are referenced to ground. Currents entering the IC are specified positive and currents exiting the IC are

negative.

Note 2:ICC is specified with the following conditions: SCL and SDA = VCC, RW and RH floating with Update Mode bit = 1.

Note 3: This is the minimum VCC voltage that causes NV memory to be recalled.

Note 4: This is the time from VCC > VPOR until initial memory recall is complete.

Note 5: Guaranteed by design.

Note 6: I2C interface timing shown is for Fast-Mode (400kHz) operation. This device is also backward-compatible with I2C-

Standard Mode timing.

Note 7: CB—total capacitance of one bus line in picofarads.

Note 8: EEPROM write time begins after a STOP condition occurs.

Note 9: Guaranteed by characterization.

I2C AC ELECTRICAL CHARACTERISTICS (See Figure 3) (continued)

(VCC = +2.7V to +5.5V, TA = -40°C to +100°C, timing referenced to VIL(MAX) and VIH(MIN).)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EEPROM Write Time

tW

(Note 8)

10

20

ms

A0, A1 Setup Time

tSU:A

Before START

0.6

μs

A0, A1 Hold Time

tHD:A

After STOP

0.6

μs

Input Capacitance on

A0, A1, SDA, or SCL

CI

5

10

pF

Startup Time

tST

2

ms

NONVOLATILE MEMORY CHARACTERISTICS

(VCC = +2.7V to +5.5V)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

EEPROM Write Cycles

TA = +85°C

50,000

Writes

EEPROM Write Cycles

TA = +25°C (Note 9)

200,000

Writes

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