PIC16LF1939-I/ML Microchip Technology, PIC16LF1939-I/ML Datasheet - Page 160

• Manufacturer Part Number: PIC16LF1939-I/ML
• Description: IC MCU 8BIT FLASH 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16LF1939-I/ML

• Core Size: 8-Bit
• Program Memory Size: 28KB (16K x 14)
• Core Processor: PIC
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Controller Family/series: PIC16LF
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1024Byte
• Cpu Speed: 32MHz
• No. Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F193X/LF193X
15.2.6
This is an example procedure for using the ADC to
perform an Analog-to-Digital conversion:
1.
2.
3.
4.
5.
6.
7.
8.
DS41364D-page 160
Note 1: The global interrupt can be disabled if the
Configure Port:
• Disable pin output driver (Refer to the TRIS
• Configure pin as analog (Refer to the ANSEL
Configure the ADC module:
• Select ADC conversion clock
• Configure voltage reference
• Select ADC input channel
• Turn on ADC module
Configure ADC interrupt (optional):
• Clear ADC interrupt flag
• Enable ADC interrupt
• Enable peripheral interrupt
• Enable global interrupt
Wait the required acquisition time
Start conversion by setting the GO/DONE bit.
Wait for ADC conversion to complete by one of
the following:
• Polling the GO/DONE bit
• Waiting for the ADC interrupt (interrupts
Read ADC Result.
Clear the ADC interrupt flag (required if interrupt
is enabled).
register)
register)
enabled)
2: Refer to Section 15.3 “A/D Acquisition
A/D CONVERSION PROCEDURE
user is attempting to wake-up from Sleep
and resume in-line code execution.
Requirements”.
(1)
(2)
.
Preliminary
EXAMPLE 15-1:
;This code block configures the ADC
;for polling, Vdd and Vss references, Frc
;clock and AN0 input.
;
;Conversion start & polling for completion
; are included.
;
BANKSEL
MOVLW
MOVWF
BANKSEL
BSF
BANKSEL
BSF
BANKSEL
MOVLW
MOVWF
CALL
BSF
BTFSC
GOTO
BANKSEL
MOVF
MOVWF
BANKSEL
MOVF
MOVWF
ADCON1
B’11110000’ ;Right justify, Frc
ADCON1
TRISA
TRISA,0
ANSEL
ANSEL,0
ADCON0
B’00000001’ ;Select channel AN0
ADCON0
SampleTime
ADCON0,ADGO ;Start conversion
ADCON0,ADGO ;Is conversion done?
$-1
ADRESH
ADRESH,W
RESULTHI
ADRESL
ADRESL,W
RESULTLO
A/D CONVERSION
 2009 Microchip Technology Inc.
;
;clock
;Vdd and Vss Vref
;
;Set RA0 to input
;
;Set RA0 to analog
;
;Turn ADC On
;Acquisiton delay
;No, test again
;
;Read upper 2 bits
;store in GPR space
;
;Read lower 8 bits
;Store in GPR space