MIKROE-798 mikroElektronika, MIKROE-798 Datasheet - Page 30

• 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

example from 0-5V, can be divided into 1024 discrete steps of about 4.88mV.
EasyPIC
any of the 10 supported analog input pins.
page 30
Figure 17-2:
Schematic of ADC
input
DATA BUS
™
v7 provides an interface in form of two potentiometers for simulating analog input voltages that can be routed to
represented with 10 bits, which converted to integer is 2
PIC® microcontrollers have 10-bit resolution, meaning that maximum value of conversion can be
Resolution is represented in maximum number of bits that resulting number occupies. Most
voltage range can be divided into. It determines the sensitivity of the A/D converter.
is resolution. Resolution represents the number of discrete steps that supported
important parameter if you need fast data acquisition. The other parameter
analog voltage be represented in form of a digital number. This is an
time and resolution. Conversion time determines how fast can an
the most important parameters of A/D converters are conversion
have A/D converters connected to one or more input pins. Some of
the input voltage value. Most microcontrollers nowadays internally
number. The value of this number is linearly dependent on
into a digital representation, usually in form of an integer
specialized circuits which can convert analog signals (voltages)
have any value within defined range. A/D converters are
Analog signals, on the other hand, are continuous, and can
Digital signals have two discrete states, which are decoded
as high and low, and interpreted as logic 1 and logic 0.
ADC inputs
RA0
RA1
RA2
RA3
RA5
RB0
RB1
RB2
RB3
RB4
10
=1024. This means that supported voltage range, for
J15
J16
R63
220
R64
220
P1
10K
P2
10K
VCC-MCU
VCC-MCU
Figure 17-1: use J15 and J16 jumpers
to connect analog input lines with
potentiometers P1 and P2
In order to connect the output of the
potentiometer P1 to RA0, RA1, RA2,
RA3 or RA5 analog microcontroller inputs,
you have to place the jumper J15 in the
desired position. If you want to connect
potentiometer P2 to any of the RB0 – RB4
analog microcontroller inputs, place jumper
J16 in the desired position. By moving
the potentiometer knob, you can create
voltages in range from GND to VCC.
Enabling ADC inputs