MIKROE-995 mikroElektronika, MIKROE-995 Datasheet - Page 32

• Manufacturer Part Number: MIKROE-995
• Description: Development Boards & Kits - PIC / DSPIC EasyPIC PRO v7
• Manufacturer: mikroElektronika

Specifications of MIKROE-995

• Rohs: yes
• Product: Development Boards
• Interface Type: I2C, SPI
• Operating Supply Voltage: 7 VAC to 23 VAC, 9 VDC to 32 VDC

2
about 1.22mV.
EasyPIC PRO
to any of the 10 supported analog input pins.
page 32
12
=4096. This means that supported voltage range, for example from 0-5V, can be devided into 4096 discrete steps of
meaning that maximum value of conversion can be represented with 12 bits, which converted to integer is
™
v7 provides an interface in form of two potentiometers for simulating analog input voltages that can be routed
Figure 18-2:
Schematic of ADC
input
DATA BUS
microcontroller which comes on MCU card with the EasyPIC PRO v7
represented in maximum number of bits that resulting number occupies. PIC18F87K22
can be divided into. It determines the sensitivity of the A/D converter. Resolution is
Resolution represents the number of discrete steps that supported voltage range
parameter if you need fast data acquisition. The other parameter is resolution.
voltage be represented in form of a digital number. This is an important
and resolution. Conversion time determines how fast can an analog
most important parameters of A/D converters are conversion time
A/D converters connected to one or more input pins. Some of the
input voltage value. Most microcontrollers nowdays internally have
number. The value of this number is lineary dependent on the
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
™
board has 12-bit resolution,
Figure 18-1: use J5 and J6 jumpers
to connect analog input lines with
potentiometers P2 and P3
In order to connect the output of the
potentiometer P2 to RA0, RA1, RA2,
RA3 or RA5 analog microcontroller inputs,
you have to place the jumper J5 in the
desired position. If you want to connect
potentiometer P3 to any of the RF1 – RF5
analog microcontroller inputs, place jumper
J6 in the desired position. By moving
the potentiometer knob, you can create
voltages in range from GND to VCC.
Enabling ADC inputs
EasyPIC PRO
v7