MIKROE-798 mikroElektronika, MIKROE-798 Datasheet - Page 29

• 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

LM35 - Analog
Temperature Sensor
The LM35 is a low-cost precision
integrated-circuit temperature sensor,
whose
proportional to the Celsius (Centigrade)
temperature. The LM35 thus has an
advantage over linear temperature
sensors calibrated in ° Kelvin, as the
user is not required to subtract a large
constant voltage from its output to
Enabling LM35 Sensor
Figure 16-1:
LM35 not
connected
EasyPIC
RE1 or RE2 microcontroller pins. The selection of either of those two lines
is done using J25 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 LM35 sensor. If you accidentally connect the sensor the other way, it can
be permanently damaged and you might need to replace it with another one.
During the readings of the sensor, make sure that no other device uses the
selected analog line, because it may interfere with the readings.
1
output
™
v7 enables you to get analog readings from the LM35 sensor using
voltage
Figure 16-2:
LM35 placed
in socket
2
is
linearly
Figure 16-3:
LM35
connected
to RE1 pin
3
obtain convenient Centigrade scaling.
It has a linear +10.0 mV/°C scale factor
and less than 60 μA current drain. As it
draws only 60 μA from its supply, it has
very low self-heating, less than 0.1°C
in still air. EasyPIC
get analog readings from the LM35
sensor in restricted temperature range
from +2ºC to +150ºC. Board provides a
™
Figure 16-4:
LM35
connected
to RE2 pin
4
v7 enables you to
separate socket (TS2) for
the LM35 sensor in TO-92
plastic packaging. Readings
are done with microcontroller
using single analog input line,
which is selected with jumper J25.
Jumper connects the sensor with
either RE2 or RE1 microcontroller pins.
RE1
RE2
VCC
VOUT
GND
J25
Figure 16-5:
LM35
connected
to RE1 pin
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