MIKROE-972 mikroElektronika, MIKROE-972 Datasheet - Page 34

• Manufacturer Part Number: MIKROE-972
• Description: Development Boards & Kits - ARM EASYMX PRO v7 ARM STELLARIS CORTEX-M3
• Manufacturer: mikroElektronika

Specifications of MIKROE-972

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: LM3S9B95
• Core: ARM Cortex M3
• Interface Type: CAN, I2C, SPI
• Operating Supply Voltage: 7 VAC to 23 VAC, 9 VDC to 32 VDC

page 34
Enabling DS1820 Sensor
Figure 20-1:
DS1820 not
connected
EasyMx PRO
between DS1820 and the microcontroller over PB7 or PD4 pins. The selection
of either of those two lines is done using J8 jumper. When placing the sensor in
the socket make sure that half-circle on the board 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, LEDs and additional pull-up or pull-down resistors from the interface
lines in order not to interfere with signal/data integrity.
1
™
v7 for Stellaris
Figure 20-2:
DS1820
placed in
socket
2
®
enables you to establish 1-wire® communication
Figure 20-3:
DS1820
connected
to PD4 pin
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
3
interface for it’s operation. It is
sensor
DS1820 is a digital temperature
DS1820 - Digital
Temperature Sensor
Figure 20-4:
DS1820
connected
to PB7 pin
that
uses
4
1-wire®
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
with
Figure 20-5: DS1820 connected to PB7 pin
9-bit
J8
R25
2K2
resolution.
VCC-3.3V
GND
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.
Board provides a separate socket (TS1)
for the DS1820. Communication line
with the microcontroller is selected
using J8 jumper.
DQ
VCC
EasyMx PRO
PD4
PB7
v7