Datasheet

dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
DS70000657H-page 464  2011-2013 Microchip Technology Inc.
FIGURE 30-37: ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS
(CHPS<1:0> = 01, SIMSAM = 0, ASAM = 0, SSRC<2:0> = 000, SSRCG = 0)
FIGURE 30-38: ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS (CHPS<1:0> = 01,
SIMSAM = 0, ASAM = 1, SSRC<2:0> = 111, SSRCG = 0, SAMC<4:0> = 00010)
TSAMP
Set SAMP
AD61
ADCLK
Instruction
SAMP
AD60
DONE
AD1IF
1 2 3 4 5 6 8 5 6 7
1
– Software sets AD1CON1. SAMP to start sampling.
2
– Sampling starts after discharge period. T
SAMP is described in
3
– Software clears AD1CON1. SAMP to start conversion.
4
– Sampling ends, conversion sequence starts.
5
– Convert bit 9.
8
– One T
AD for end of conversion.
AD50
7 8
6
– Convert bit 8.
7
– Convert bit 0.
Execution
“dsPIC33/PIC24 Family Reference Manual”.
“Analog-to-Digital Converter (ADC)” (DS70621) in the
Clear SAMP
AD55 AD55
1 2 3 4 5 6 4 5 6 8
1
– Software sets AD1CON1. ADON to start AD operation.
2
– Sampling starts after discharge period. T
SAMP is described in
3
– Convert bit 9.
4
– Convert bit 8.
5
– Convert bit 0.
7 3
6
– One T
AD for end of conversion.
7
– Begin conversion of next channel.
8
– Sample for time specified by SAMC<4:0>.
ADCLK
Instruction
Set ADON
Execution
SAMP
TSAMP
AD1IF
DONE
AD55 AD55
TSAMP
AD55
AD50
“Analog-to-Digital Converter (ADC)” (DS70621)
in the “dsPIC33/PIC24 Family Reference Manual”.
AD62