DS2482-800: Eight-Channel 1-Wire Master

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Note 5:

Note 6:

These values apply at full load, i. e., 1nF at standard speed and 0.3nF at Overdrive speed. For

reduced load, the pulldown slew rate is slightly faster.

Note 7:

Note 8:

Applies to SDA, SCL, and AD0, AD1, AD2.

Note 9:

Note 10:

signal) to bridge the undefined region of the falling edge of SCL.

Note 11:

SCL signal.

Note 12:

A Fast-mode I²C-bus device can be used in a standard-mode I²C-bus system, but the requirement

period of the SCL signal. If such a device does stretch the LOW period of the SCL signal, it must

standard-mode I²C-bus specification) before the SCL line is released.

Note 13:

to I²C-Bus Specification v2.1 are allowed.

Note 14:

Note 15:

Therefore, if one of these parameters is found to be off the typical value, it is safe to assume that all of

these parameters deviate from their typical value in the same direction and by the same degree.

Note 1:

Operating current with 1-Wire write byte sequence followed by continuous Read of Status Register at

400KHz in Overdrive.

Note 2:

With standard speed the total capacitive load of the 1-Wire bus should not exceed 1nF, otherwise the

capacitive load on the 1-Wire bus must not exceed 300pF.

Note 3:

Note 4:

Active or resistive pullup choice is configurable.

PIN DESCRIPTION

PIN

NAME

FUNCTION

1

IO3

IO Driver for 1-Wire Line #3

2

SCL

3

SDA

4

Power Supply Input

5

NC

Not Connected

6

AD2

7

AD1

8

AD0

address of the device, see Figure 8.

9

IO7

IO Driver for 1-Wire Line #7

10

IO6

IO Driver for 1-Wire Line #6

11

IO5

IO Driver for 1-Wire Line #5

12

IO4

IO Driver for 1-Wire Line #4

13

GND

Ground Reference

14

IO0

IO Driver for 1-Wire Line #0

15

IO1

IO Driver for 1-Wire Line #1

16

IO2

IO Driver for 1-Wire Line #2