DS2482-100_12 MAXIM [Maxim Integrated Products], DS2482-100_12 Datasheet

DS2482-100_12

Manufacturer Part Number

DS2482-100_12

Description

Single-Channel 1-Wire Master

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.DS2482-100_12.pdf (24 pages)

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The DS2482-100 is an I

that interfaces directly to standard (100kHz max) or fast

(400kHz max) I

tocol conversion between the I

downstream 1-Wire slave devices. Relative to any

attached 1-Wire slave device, the DS2482-100 is a

1-Wire master. Internal, factory-trimmed timers relieve

the system host processor from generating time-critical

1-Wire waveforms, supporting both standard and over-

drive 1-Wire communication speeds. To optimize

1-Wire waveform generation, the DS2482-100 performs

slew-rate control on rising and falling 1-Wire edges and

provides additional programmable features to match

drive characteristics to the 1-Wire slave environment.

Programmable, strong pullup features support 1-Wire

power delivery to 1-Wire devices such as EEPROMs

and sensors. The DS2482-100 combines these features

with an output to control an external MOSFET for

enhanced strong pullup application. The I

address assignment is controlled by two binary

address inputs, resolving potential conflicts with other

19-4930; Rev 9; 1/12

Pin Configurations appear at end of data sheet.

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

C slave devices in the system.

Printers

Medical Instruments

C masters to perform bidirectional pro-

________________________________________________________________ Maxim Integrated Products

= I

C PULLUP RESISTOR (SEE THE APPLICATIONS INFORMATION SECTION FOR R

General Description

C-to-1-Wire

μC

C PORT)

Industrial Sensors

Cell Phones, PDAs

Applications

C master and any

bridge device

Single-Channel 1-Wire Master

C slave

SDA

SCL

AD0

AD1

DS2482-100

♦ I

♦ 1-Wire Master IO with Selectable Active or

♦ Provides Reset/Presence, 8-Bit, Single-Bit, and

♦ Standard and Overdrive 1-Wire Communication

♦ Slew-Controlled 1-Wire Edges

♦ Strong 1-Wire Pullup Provided by an Internal Low-

♦ PCTLZ Output to Optionally Control an External

♦ Two Address Inputs for I

♦ Operating Range: 2.9V to 5.5V, -40°C to +85°C

♦ 8-Pin (150 mils) SO and 9-Bump WLP Packages

+ Denotes a lead(Pb)-free/RoHS-compliant package.

T/T&R = Tape and reel.

DS2482S-100+

DS2482S-100+T&R

DS2482X-100+T

PCTLZ

Passive 1-Wire Pullup

3-Bit 1-Wire IO Sequences

Speeds

Impedance Signal Path

MOSFET for Stronger Pullup Requirements

C Host Interface Supports 100kHz and 400kHz

C Communication Speeds

PART

SIZING).

DEVICE

1-Wire

Typical Operating Circuit

1-Wire LINE

CURRENT-LIMITING

RESISTOR

REFER TO APPLICATION

NOTE 4206

-40°C to +85°C

TEMP RANGE

Ordering Information

DEVICE

1-Wire

CIRCUITRY

OPTIONAL

C Address Assignment

DEVICE

1-Wire

PIN-PACKAGE

8 SO (150 mils)

9 WLP (2.5k pieces)

Features

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