ds4550et-r Maxim Integrated Products, Inc., ds4550et-r Datasheet

ds4550et-r

Manufacturer Part Number

ds4550et-r

Description

Ds4550 I?c And Jtag Nonvolatile 9-bit I/o Expander Plus Memory

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.DS4550ET-R.pdf (18 pages)

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The DS4550 is a 9-bit, nonvolatile (NV) I/O expander

with 64 bytes of NV user memory controlled by either

an I

JTAG port. The DS4550 offers a digitally programmable

alternative to hardware jumpers and mechanical

switches that are being used to control digital logic

nodes. Each I/O pin is independently configurable. The

outputs are open drain with selectable pullups. Each

output has the ability to sink up to 16mA, and 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; 9/04

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

TOP VIEW

RAM-Based FPGA Bank Switching for Multiple

Profiles

Selecting Between Boot Flash

Setting ASIC Configurations/Profiles

Servers

Network Storage

Routers

Telecom Equipment

PC Peripherals

-compatible serial interface or an IEEE 1149.1

I/O_0

I/O_1

I/O_2

I/O_3

I/O_4

TMS

TCK

General Description

TSSOP

DS4550

Pin Configuration

C Standard Specification as defined by Philips.

Applications

______________________________________________ Maxim Integrated Products

C and JTAG Nonvolatile 9-Bit I/O

GND

I/O_8

I/O_7

I/O_6

I/O_5

TDO

TDI

SCL

SDA

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

C Patent Rights to use these components in an I

Expander Plus Memory

♦ Programmable Replacement for Mechanical

♦ Nine NV Inputs/Outputs

♦ 64-Byte NV User Memory (EEPROM)

♦ I

♦ Up to 8 Devices can be Multidropped on the Same

♦ IEEE 1149.1 Boundary Scan Compliant

♦ Open-Drain Outputs with Configurable Pullups

♦ Outputs Capable of Sinking 16mA

♦ Low Power Consumption

♦ Wide Operating Voltage Range: 2.7V to 5.5V

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

Add “/T&R” for tape and reel orders.

DS4550E

INTERFACE

Jumpers and Switches

0.1µF

C-Compatible Serial Interface and JTAG

C Bus

PART

JTAG

4.7k

Typical Operating Circuit

-40°C to +85°C

TEMP RANGE

Ordering Information

SCL

SDA

TCK

TMS

TDI

TDO

GND

DS4550

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

C system, provided

PIN-PACKAGE

Features

20 TSSOP

CLOCK

GENERATOR

FPGA

CPU SPEED

SELECT

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