M I K R O E L E K T R O N I K A S O F T W A R E A N D H A R D W A R E S O L U T I O N S F O R T H E E M B E D D E D W O R L D
EasyAVR
USB
4
EasyAVR4 User
’
s Manual
MikroElektronika
Development
tools
2
26
6
page
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DS1820 digital thermometer is well suited to envi-
ronmental temperature measurement, having the
temperature range of -55°C to 125°C and the accura-
cy of +/-0.5°C. It must be placed correctly in the 3-
pin socket provided on EasyAVR4, with its rounded
side to the lower edge of the board (see Fig. 33) oth-
erwise the DS1820 could be permanently damaged.
DS1820’s data pin can be connected to either PC6 or
PC7 pin, which is determined by jumper J7.
J7
DS1820
VCC
R1
10K
GND
DQ
DQ line is
connected to PC6
DQ line is
connected to PC7
DQ line is
connected
dis
-55 C
125 C
VCC
VCC
A
TMEGAxxxx
PB1
PB2
PB3
PB4
PD1
PD2
PB5
PB6
PB7
PD4
PD5
PD6
PC1
PC0
PD7
PC2
PC3
PC4
PC5
PC6
PC7
PA7
PA6
PA5
PA4
PA3
PA2
PA0
PA1
PD3
PB0
PD0
RST
VCC
GND
XT2
XT1
AREF
AGND
AVCC
VCC
OSCILLATOR
10K
Reset
100n
VCC
There is a mark in
the form of half-cir-
cle for proper ori-
entation of DS1820
sensor.
DS1820 DIGITAL THERMOMETER
Figure 33.
Figure 34.
DS1820
DS1820 schematic
