PIC16F690-E/P Microchip Technology Inc., PIC16F690-E/P Datasheet - Page 114
PIC16F690-E/P
Manufacturer Part Number
PIC16F690-E/P
Description
20 PIN, 7 KB FLASH, 256 RAM, 18 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F690-EP.pdf
(294 pages)
Specifications of PIC16F690-E/P
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
7 MIPS
Eeprom Memory
256 Bytes
Input Output
18
Interface
USART
Memory Type
Flash
Number Of Bits
8
Package Type
20-pin PDIP
Programmable Memory
7K Bytes
Ram Size
256 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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PIC16F631/677/685/687/689/690
EXAMPLE 9-1:
9.2.7
The following registers are used to control the
operation of the ADC.
DS41262C-page 112
;This code block configures the ADC
;for polling, Vdd reference, 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
ADC REGISTER DEFINITIONS
ADCON1
B’01110000’ ;ADC Frc clock
ADCON1
TRISA
TRISA,0
ANSEL
ANSEL,0
ADCON0
B’10000001’ ;Right justify,
ADCON0
SampleTime
ADCON0,GO
ADCON0,GO
$-1
ADRESH
ADRESH,W
RESULTHI
ADRESL
ADRESL,W
RESULTLO
A/D CONVERSION
;
;
;
;Set RA0 to input
;
;Set RA0 to analog
;
; Vdd Vref, AN0, On
;Acquisiton delay
;Start conversion
;Is conversion done?
;No, test again
;
;Read upper 2 bits
;store in GPR space
;
;Read lower 8 bits
;Store in GPR space
Preliminary
© 2006 Microchip Technology Inc.
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