DM163045 Microchip Technology, DM163045 Datasheet - Page 80

• Manufacturer Part Number: DM163045
• Description: PICDEM Lab Development Kit (with PICkit 3) General Purpose
• Manufacturer: Microchip Technology
• Series: PICDEM™r
• Type: MCUr

Specifications of DM163045

• Contents: Board, PIC kit 3
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC Micro® MCU

PICDEM
DS41369A-page 76
TM
5.2.3
5.2.3.1
To configure the peripherals used in this lab, the following registers are used:
1. ADC Control Register 0: ADCON0 (Register 9-1 in Section 9 of the PIC16F690
2. ADC Control Register 1: ADCON1 (Register 9-2 in Section 9 of the PIC16F690
3. ADC Result Register high: ADRESH (see Register 9-3 in Section 9 of the
4. ADC Result Register low: ADRESL (see Register 9-4 in Section 9 of the
5.2.3.2
In this lab, the ADC peripheral on the PIC16F690 is used to perform a simple
conversion of an analog voltage present on pin 13. The voltage is varied using a
100K
generate a 10-bit binary result via successive approximation stored into two 8-bit ADC
result registers ADRESH and ADRESL. The ADC result is software selectable as either
left or right justified as shown in Section 9.1.6 of the PIC16F690 Data Sheet. This
application will configure the ADC result as left justified with the four Most Significant
bits of the 10-bit result output to the RC0, RC1,RC2 and RC3 PORTC pins used to light
connected LEDs accordingly.The PICDEM™ Development Board configuration
schematic is shown in Figure 5-1.
Lab Development Board User’s Guide
- Configures ADC conversion result justification.
- Select ADC reference voltage.
- Selects ADC input channel (i.e., pin with analog voltage to be converted).
- Starts ADC conversion and determines when ADC conversion is complete.
- Enables the ADC peripheral.
- Determines ADC conversion clock.
- Holds upper 8-bits or upper 2-bits (depending on justification selected) of
- Holds lower 8-bits or lower 2-bit (depending on justification selected) of 10-bit
Data Sheet)
Data Sheet)
PIC16F690 Data Sheet)
10-bit ADC conversion result.
PIC16F690 Data Sheet)
ADC conversion result.
Ω
potentiometer. This voltage is compared against a reference voltage to
Lab 1: Simple ADC
NEW REGISTERS USED IN THIS LAB
OVERVIEW
© 2009 Microchip Technology Inc.