1-Wire SHA-1 Authenticated 1Kb

EEPROM with 1.8V Operation

2

_______________________________________________________________________________________

ABRIDGED DATA SHEET

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

IO Voltage Range to GND .......................................-0.5V to +4V

IO Sink Current ...................................................................20mA

Operating Temperature Range ...........................-20°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-55°C to +125°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

IO PIN: GENERAL DATA

1-Wire Pullup Voltage

(Note 2)

1.75

3.65

V

1-Wire Pullup Resistance

(Notes 2, 3)

300

750

Input Capacitance

(Notes 4, 5)

1500

pF

Input Load Current

0.05

5

µA

High-to-Low Switching Threshold

(Notes 5, 6, 7)

0.4

0.89

V

Input Low Voltage

(Notes 2, 8)

0.30

V

Low-to-High Switching Threshold

(Notes 5, 6, 9)

0.74

0.49

V

Switching Hysteresis

(Notes 5, 6, 10)

0.26

1.02

V

Output Low Voltage

At 4mA current load (Note 11)

0.4

V

Standard speed, RPUP = 750

20

Recovery Time (Notes 2, 12)

Overdrive speed

20

µs

Standard speed

80

Time Slot Duration (Notes 2, 13)

Overdrive speed

28

µs

IO PIN: 1-Wire RESET, PRESENCE-DETECT CYCLE

Standard speed

480

640

Reset Low Time (Note 2)

Overdrive speed

50

80

µs

Standard speed

480

Reset High Time (Note 14)

Overdrive speed

48

µs

Standard speed

60

72

Presence-Detect Sample Time

(Notes 2, 15)

Overdrive speed

7

10

µs

IO PIN: 1-Wire WRITE

Standard speed

60

120

Write-Zero Low Time (Notes 2, 16)

Overdrive speed

8

15.5

µs

Standard speed

1

15

Write-One Low Time (Notes 2, 16)

Overdrive speed

1

2

µs

IO PIN: 1-Wire READ

Standard speed

5

15 -

Read Low Time (Notes 2, 17)

Overdrive speed

1

2 -

µs

Standard speed

15

Read Sample Time (Notes 2, 17)

Overdrive speed

2

µs

EEPROM

IO voltage < 3.65V

3.5

IO voltage < 2.95V

2.5

Programming Current

(Notes 5, 18)

IO voltage = 1.75V

1.0

mA