MIKROE-453 mikroElektronika, MIKROE-453 Datasheet - Page 17

• Manufacturer Part Number: MIKROE-453
• Description: Development Boards & Kits - PIC/DSPIC LV18F V6 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-453

• Rohs: yes
• Product: Development Kits
• Core: PIC
• Interface Type: ICD, IDC10, JTAG, RS-232, USB
• Operating Supply Voltage: 5 V, 9 V to 32 V
• Data Bus Width: 8 bit
• Description/function: Development Board Only, Touch Screen, Pencil, DS1820, LCD, Serial Cable, GLCD not included
• Dimensions: 265 mm x 220 mm
• For Use With: PIC

LV 18F v6 Development System
LV 18F v6 Development System
13.0. A/D Converter Test Inputs
13.0. A/D Converter Test Inputs
An A/D converter is used for converting an analog signal into the appropriate digital value. A/D converter is linear, which means that
converted number is linearly dependent on the input voltage value. The A/D converter integrated into the microcontroller converts an
analog voltage value into a 10-bit number. The microcontroller with a built-in A/D converter is supplied with DC voltages varying from
0 to 5V over test inputs. Jumpers J14 and J15 are used for selecting some of the following pins RA0, RA1, RA2, RA3, RC0, RC1,
RC2 and RC3 for A/D conversion. Resistors R16 and R17 have a protective function and are used for limiting current fl ow through
the potentiometer or the microcontroller pin. The value of the input analog voltage can be changed linearly using potentiometers P3
and P4.
Figure 13-3: Microcontroller and A/D converter test inputs connection schematic
NOTE:
A/D conversion is performed via
microcontroller pins RA0 and RC0
In order to enable the microcontroller to accurately perform A/D conversion, it is necessary to turn off LEDs and
pull-up/pull-down resistors on the port pins used by the A/D converter.
Figure13-1: ADC (jumper in default position)
Figure 13-2: Pins RA0 and RC0 used as
input pins for A/D conversion
MikroElektronika
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