DS1820
FEATURES
PIN ASSIGNMENT
DALLAS DALLAS DS2434 DS1820 1 2 3
- Unique 1- Wire TM interface requires only one port pin for munication
- Multidrop capability simplifies distributed temperature sensing applications
- Requires no external ponents
- Can be powered from data line
- Zero standby power required
- Measures temperatures from
- 55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is
- 67°F to +257°F in 0.9°F increments
BOTTOM VIEW 1 2 3
- Temperature is read as a 9- bit digital value.
- Converts temperature to digital word in 200 ms (typ.)
- User- definable, tings nonvolatile temperature alarm set-
DS1820 PR35 PACKAGE See Mech. Drawings Section
GND DQ VDD
NC NC NC NC NC NC VDD DQ
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
NC NC NC NC NC NC NC GND
DS1820S 16- PIN SSOP See Mech. Drawings Section
- Alarm search mand identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) systems, consumer products, thermometers, or any...
