1Kb Protected 1-Wire EEPROM

with SHA-1 Engine

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 +6V

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

Operating Temperature Range ...........................-40°C to +85°C

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

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

Soldering Temperature...........................Refer to the IPC/JEDEC

J-STD-020 Specification.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

IO PIN: GENERAL DATA

1-Wire Pullup Voltage

(Note 2)

2.8

5.25

V

1-Wire Pullup Resistance

(Notes 2, 3)

0.3

2.2

k

Input Capacitance

(Notes 4, 5)

1000

pF

Input Load Current

0.05

6.7

μA

High-to-Low Switching Threshold

(Notes 5, 6, 7)

0.46

1.8

V

Input Low Voltage

(Notes 2, 8)

0.5

V

Low-to-High Switching Threshold

(Notes 5, 6, 9)

1.0

1.1

V

Switching Hysteresis

(Notes 5, 6, 10)

0.21

1.70

V

Output Low Voltage

At 4mA current load (Note 11)

0.4

V

5

2

Recovery Time

(Notes 2,12)

Overdrive speed, directly prior to reset

5

μs

Standard speed

0.5

5.0

Rising-Edge Hold-Off Time

(Notes 5, 13)

Overdrive speed

Not applicable (0)

μs

Standard speed

65

Time Slot Duration

(Notes 2, 14)

Overdrive speed

8

μs

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

Standard speed

480

640

Reset Low Time (Note 2)

Overdrive speed

48

80

μs

Standard speed

15

60

Presence-Detect High Time

Overdrive speed

2

6

μs

Standard speed

60

240

Presence-Detect Low Time

Overdrive speed

8

24

μs

Standard speed

60

75

Presence-Detect Sample Time

(Notes 2, 15)

Overdrive speed

6

10

μs