ds4520etrl Maxim Integrated Products, Inc., ds4520etrl Datasheet

ds4520etrl

Manufacturer Part Number

ds4520etrl

Description

Ds4520 9-bit I?c Nonvolatile I/o Expander Plus Memory

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.DS4520ETRL.pdf (10 pages)

Current page: 1 of 10
Download datasheet (973Kb)

The DS4520 is a 9-bit nonvolatile (NV) I/O expander with

64 bytes of NV user memory controlled by an I

compatible serial interface. The DS4520 offers users a

digitally programmable alternative to hardware jumpers

and mechanical switches that are being used to control

digital logic nodes. Furthermore, the digital state of each

pin can be read through the serial interface. Each I/O

pin is independently configurable. The outputs are open

drain with selectable pullups. Each output has the ability

to sink up to 12mA. Since the device is NV, it powers up

in the desired state allowing it to control digital logic

inputs immediately on power-up without having to wait

for the host CPU to initiate control.

Rev 0; 6/04

Associated Companies, conveys a license under the Philips I

that the system conforms to the I

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

C is a trademark of Philips Corp. Purchase of I

CONTROLLER

0.1µF

SYSTEM

FROM

RAM-Based FPGA Bank Switching for

Selecting Between Boot Flash

Setting ASIC Configurations/Profiles

Servers

Network Storage

Routers

Telecom Equipment

PC Peripherals

Multiple Profiles

4.7kΩ

Typical Operating Circuit

4.7kΩ

General Description

SCL

SDA

GND

C Standard Specification as defined by Philips.

DS4520

Applications

I/O_0

I/O_1

I/O_2

I/O_3

I/O_4

I/O_5

I/O_6

I/O_7

I/O_8

______________________________________________ Maxim Integrated Products

C components from Maxim Integrated Products, Inc., or one of its sublicensed

FPGA

CLOCK

GENERATOR

CPU

SPEED

SELECT

I/O Expander Plus Memory

C Patent Rights to use these components in an I

♦ Programmable Replacement for Mechanical

♦ Nine NV Input/Output Pins

♦ 64-Byte NV User Memory (EEPROM)

♦ I

♦ Up to 8 Devices Can be Multidropped on the

♦ Open-Drain Outputs with Configurable Pullups

♦ Outputs Capable of Sinking 12mA

♦ Low Power Consumption

♦ Wide Operating Voltage (2.7V to 5.5V)

♦ Operating Temperature Range: -40°C to +85°C

Add “/T&R” for tape and reel orders.

DS4520E

Jumpers and Switches

Same I

C-Compatible Serial Interface

TOP VIEW

9-Bit I

PART

C Bus

I/O_0

I/O_1

I/O_2

I/O_3

I/O_4

-40°C to +85°C

TEMP RANGE

Ordering Information

C Nonvolatile

DS4520

Pin Configuration

GND

I/O_8

I/O_7

I/O_6

I/O_5

SCL

SDA

C system, provided

16 TSSOP

PIN-PACKAGE

Features

Related parts for ds4520etrl

ds4520etrl Summary of contents

Page 1

... I/O_4 CLOCK GENERATOR I/O_5 I/O_6 CPU SPEED I/O_7 SELECT I/O_8 2 C components from Maxim Integrated Products, Inc., or one of its sublicensed 2 C Patent Rights to use these components ______________________________________________ Maxim Integrated Products 2 C Nonvolatile Features 2 C Bus Ordering Information TEMP RANGE PIN-PACKAGE -40° ...

Page 2

I C Nonvolatile I/O Expander Plus Memory ABSOLUTE MAXIMUM RATINGS Voltage SDA, and SCL Pins CC Relative to Ground.............................................-0.5V to +6.0V Voltage on A0, A1, A2, and I/O_n [ Relative to ...

Page 3

AC ELECTRICAL CHARACTERISTICS (See Figure +2.7V to +5.5V -40°C to +85°C, unless otherwise noted. Timing referenced PARAMETER SCL Clock Frequency Bus Free Time Between Stop and Start Conditions Hold Time (Repeated) ...

Page 4

I C Nonvolatile I/O Expander Plus Memory (V = +5.0V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.0 I/O0–I/O7 CONTROL BITS = 0 I/O0–I/O7 PULLUPS DISABLED V = SDA = SCL CC ...

Page 5

PIN NAME 1 I/O_0 Input/Output 0. Bidirectional I/O pin. 2 I/O_1 Input/Output 1. Bidirectional I/O pin. 3 I/O_2 Input/Output 2. Bidirectional I/O pin. 4 I/O_3 Input/Output 3. Bidirectional I/O pin. 5 I/O_4 Input/Output 4. Bidirectional I/O pin ...

Page 6

I C Nonvolatile I/O Expander Plus Memory Detailed Description The DS4520 contains nine bidirectional, NV, input/out- put (I/O) pins, and a 64-byte EEPROM user memory. The I/O pins and user memory are accessible through C-compatible ...

Page 7

Table 1. DS4520 Memory Map ADDRESS TYPE NAME 00h to 3Fh EEPROM User Memory 64 bytes of general-purpose user EEPROM E7h — Reserved E8 to EFh EEPROM Reserved Pullup F0h Enable 0 Pullup F1h Enable 1 SRAM Shadowed ...

Page 8

I C Nonvolatile I/O Expander Plus Memory Bit Read: At the end a write operation, the master must release the SDA bus line for the proper amount of setup time before the next rising edge of SCL during ...

Page 9

If an incorrect slave address is written, the DS4520 assumes the master is communicating with another I device and ignores the communication until the next start condition is sent. 2 Memory Address: During write operation, the master ...

Page 10

I C Nonvolatile I/O Expander Plus Memory TYPICAL WRITE TRANSACTION MSB LSB START R/W READ/ SLAVE WRITE ADDRESS* EXAMPLE TRANSACTIONS (WHEN A0, A1, AND A2 ...

Related keywords

ds4520etrl datasheet
ds4520etrl data sheet
ds4520etrl pdf datasheet
ds4520etrl component
ds4520etrl part
ds4520etrl distributor
ds4520etrl RoHS
ds4520etrl datasheet download