MIKROE-455 mikroElektronika, MIKROE-455 Datasheet - Page 13

• Manufacturer Part Number: MIKROE-455
• Description: Development Boards & Kits - 8051 EASY8051 V6 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-455

• Rohs: yes
• Product: Development Kits
• Tool Is For Evaluation Of: AT89S8253
• Core: 8051
• Interface Type: CAN, MMC/SD, RS-232, USB
• Operating Supply Voltage: 5 V, 9 V to 32 V
• Data Bus Width: 8 bit
• Description/function: Development Board Only, GLCD, LCD, DS1820, Serial Cable not included
• Dimensions: 265 mm x 220 mm
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• For Use With: AT89S8253

Easy8051 v6 Development System
8.0. DS1820 Temperature Sensor
1-wire
control of the master microcontroller. The advantage of such communication is that only one microcontroller pin is used. All slave
devices have by default a unique ID code, which enables the master device to easily identify all devices sharing the same interface.
DS1820 is a temperature sensor that uses 1-wire standard for its operation. It is capable of measuring temperatures within the range
of -55 to 125°C and provides ±0.5°C accuracy for temperatures within the range of -10 to 85°C. Power supply voltage of 3V to 5.5V
is required for its operation. It takes maximum 750ms for the DS1820 to calculate temperature with 9-bit resolution. The Easy8051
v6 development system provides a separate socket for the DS1820. It may use either P1.2 or P3.3 pin for communication with the
microcontroller, which depends on the position of switches 7 and 8 on the DIP switch SW8. In Figure 8-5, switch 7 on the DIP switch
SW8 is in the ON position which means that communication is enabled via the P1.2 pin.
Figure 8-1: DS1820
connector (DS1820 is
not placed)
Figure 8-5: DS1820 and microcontroller connection schematic
Temperature sensor is connected to
the microcontroller via the P1.2 pin
®
serial communication enables data to be transferred over a single communication line while the process itself is under the
Figure 8-2: DS1820
is plugged into the
connector
NOTE:
Make sure that half-
circle on the board
matches the round
side of the DS1820
Figure 8-3: Switch
7 on the DIP switch
SW8 is in the ON
position, DS1820
is connected to the
P1.2 pin
MikroElektronika
Figure 8-4: Switch
8 on the DIP switch
SW8 is in the ON
position, DS1820
is connected to the
P3.3 pin
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