MIKROE-798 mikroElektronika, MIKROE-798 Datasheet - Page 28

• Manufacturer Part Number: MIKROE-798
• Description: Development Boards & Kits - PIC / DSPIC EASYPIC v7 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-798

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: PIC18F45K22
• Core: PIC
• Interface Type: RS-232, USB
• Operating Supply Voltage: 5 V
• Description/function: Development board only, touch screen, pencil, DS1820, LCD, serial cable, GLCD not included
• Dimensions: 266 mm x 220 mm

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Enabling DS1820 Sensor
Figure 15-1:
DS1820 not
connected
EasyPIC
and the microcontroller via RA4 or RE2 microcontroller pins. The selection of either
of those two lines is done using J11 jumper. When placing the sensor in the socket
make sure that half-circle on the board’s silkscreen markings matches the rounded
part of the DS1820 sensor. If you accidentally connect the sensor the other way, it
may be permanently damaged. Make sure to disconnect other peripherals (except
1-wire), LEDs and additional pull-up or pull-down resistors from the interface lines
in order not to interfere with signal/data integrity.
1
™
v7 enables you to establish 1-wire® communication between DS1820
Figure 15-2:
DS1820
placed in
socket
2
Figure 15-3:
DS1820
connected
to RE2 pin
3
temperatures within the range of -10 to
85°C. It requires 3V to 5.5V power supply
for stable operation. It takes maximum
and provides ±0.5°C accuracy for
within the range of -55 to 128°C,
capable of measuring temperatures
interface for it’s operation. It is
sensor
DS1820 is a digital temperature
DS1820 - Digital
Temperature Sensor
Figure 15-4:
DS1820
connected
to RA4 pin
4
that
uses
1-wire®
Figure 15-5:
DS1820
connected
to RE2 pin
of 750ms for the DS1820 to calculate
temperature
1-wire® serial communication enables
data to be transferred over a single
communication line, while the process
itself is under the control of the master
microcontroller. The advantage of
such communication is that only one
microcontroller pin is used. Multiple
J11
with
9-bit
resolution.
R2
1K
VCC-MCU
sensors can be connected on the same
line. All slave devices by default have
a unique ID code, which enables the
master device to easily identify all
devices sharing the same interface.
EasyPIC
(TS1) for the DS1820. Communication
line with the microcontroller is connected
via jumper J11.
™
GND
v7 provides a separate socket
DQ
VCC
RA4
RE2