PIC16F684 Registers: Difference between revisions
| Line 54: | Line 54: | ||
T2CON sets up Timer2, which is used for PWM timing. |
T2CON sets up Timer2, which is used for PWM timing. |
||
[[image:PIC register T2CON.png|center]] |
[[image:PIC register T2CON.png|center]] |
||
===A/D Configuration and Usage=== |
|||
When configuring and using the ADC the following functions must be considered: |
|||
* Port configuration (ANSEL) |
|||
* Channel selection (ADCON0) |
|||
* ADC voltage reference selection (ADCON0) |
|||
* ADC conversion clock source (ADCON1) |
|||
* Interrupt control |
|||
* Results formatting (ADCON0) |
|||
====ADCON1==== |
|||
[[image:PIC register ADCON0.png|center]] |
|||
====ADCON0==== |
|||
[[image:PIC register ADCON1.png|center]] |
|||
====ADRESH==== |
|||
ADRESH contains the highest significant digits of the A/D conversion. The values contained in this register depend on whether you select "Right Justified" (ADFM=1) or "Left Justified" (ADFM=0) results. |
|||
:'''Right Justified (ADFM=1):''' |
|||
[[image:PIC register ADRESHR.png|center]] |
|||
:'''Left Justified (ADMF=0):''' |
|||
[[image:PIC register ADRESHL.png|center]] |
|||
====ADRESL==== |
|||
ADRESL contains the lowest significant digits of the A/D conversion. The values contained in this register depend on whether you select "Right Justified" (ADFM=1) or "Left Justified" (ADFM=0) results. |
|||
:'''Right Justified (ADFM=1):''' |
|||
[[image:PIC register ADRESLR.png|center]] |
|||
:'''Left Justified (ADMF=0):''' |
|||
[[image:PIC register ADRESLL.png|center]] |
|||
Revision as of 17:50, 10 July 2006
This page is a more detailed overview of the registers. It includes the most commonly used registers. All remaining information can be found on the Microchip website.
Memory Map
These images show the memory map of the PIC16F684. Use these for a quick reference for register addresses and initial values.
Registers in Memory Bank 0
Registers in Memory Bank 1
Register Descriptions
Configuration
STATUS
OPTION
INTCON
PIE1
The PIE1 is used to enable/disable interrupts.
I/O
PORTA
TRISA
ANSEL
The ANSEL register determines whether a pin, AN<7:0>, is an analog input or not.
IOCA
The IOCA register determines whether or not an interrupt is generated when a digital pin on PORTA, RA<5:0>, experiences a change in value.
PORTC
TRISC
Timers
T2CON
T2CON sets up Timer2, which is used for PWM timing.
A/D Configuration and Usage
When configuring and using the ADC the following functions must be considered:
- Port configuration (ANSEL)
- Channel selection (ADCON0)
- ADC voltage reference selection (ADCON0)
- ADC conversion clock source (ADCON1)
- Interrupt control
- Results formatting (ADCON0)
ADCON1
ADCON0
ADRESH
ADRESH contains the highest significant digits of the A/D conversion. The values contained in this register depend on whether you select "Right Justified" (ADFM=1) or "Left Justified" (ADFM=0) results.
- Right Justified (ADFM=1):
- Left Justified (ADMF=0):
ADRESL
ADRESL contains the lowest significant digits of the A/D conversion. The values contained in this register depend on whether you select "Right Justified" (ADFM=1) or "Left Justified" (ADFM=0) results.
- Right Justified (ADFM=1):
- Left Justified (ADMF=0):
