DS7505(2015) Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

DS7505
(Rev.:2015)

Digital Thermometer and Thermostat

Maxim Integrated 

DS7505

Digital Thermometer and Thermostat

IN THIS EXAMPLE, THE DS7505 IS CONFIGURED

TO HAVE A FAULT TOLERANCE OF 2.

TOS

TEMPERATURE

THYST

INACTIVE

O.S. OUTPUT—COMPARATOR MODE

ACTIVE

INACTIVE

O.S. OUTPUT—INTERRUPT MODE

ACTIVE

ASSUMES A READ

HAS OCCURED

CONVERSIONS

Figure 4. O.S. Output Operation Example

Interrupt Mode

In interrupt mode, the O.S. output first becomes active

when the measured temperature exceeds the TOS value

a consecutive number of times equal to the FT value in

the configuration register. Once activated, O.S. can only

be cleared by either putting the DS7505 into shutdown

mode or by reading from any register (temperature,

configuration, TOS, or THYST) on the device. Once O.S.

has been deactivated, it is only reactivated when the

measured temperature falls below the THYST value a

consecutive number of times equal to the FT value. Again,

O.S can only be cleared by putting the device into shut-

down mode or reading any register. Thus, this interrupt/

clear process is cyclical between TOS and THYST events

(i.e, TOS, clear, THYST, clear, TOS, clear, THYST, clear,

etc.). Thermostat interrupt mode operation with FT = 2 is

illustrated in Figure 4.

www.maximintegrated.com

Maxim Integrated │  7

Share Link: