TC520ACPD datasheet(8/16 Pages) MICROCHIP

Numer części	TC520ACPD

Szczegółowy opis	Serial Interface Adapter for TC500 A/D Converter Family

PDF	16 Pages

Scroll/Zoom	100%

Producent	MICROCHIP [Microchip Technology]

Strona internetowa	http://www.microchip.com

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8 / 16 page

TC520A

DS21431C-page 8

 2001-2012 Microchip Technology Inc.

FIGURE 4-1:

TC520 initialization & startup conversion timing relatioNships

FIGURE 4-2:

lOad value modify cycle

4.4.6

OPTO-ISOLATED APPLICATIONS

The 3 wire serial port of the TC520A can be opto-

isolated for applications requiring isolated data acquisi-

tion. The additional control lines (LOAD, DV, READ)

are normally not needed in such applications, but can

also be brought across the isolation barrier with the

addition of a second isolator.

LOAD

LOAD VALUE updated

and conversion started

TC520A Conversion State

CE is pulled

high only during

AZ (DV = Low)

New LOAD VALUE

can be loaded

(if so desired)

TC520A held in

AZ phase

as long as CE = HIGH

INT

DINT

INT

DINT

DIN, DCLK

LOAD VALUE

shifted into

DIN

Load

Value

LOAD

LOAD VALUE updated

and conversion started

TC520A Conversion State

INT

DINT

INT

DINT

DIN, DCLK

LOAD VALUE

shift into

DIN

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