70592C Datasheet, PDF (283/314 Pages) Microchip Technology – High-Performance, 16-bit Microcontrollers

PIC24HJXXXGPX06A/X08A/X10A
FIGURE 24-23:
ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS
(CHPS<1:0> = 01, SIMSAM = 0, ASAM = 0, SSRC<2:0> = 000)
AD50
ADCLK
Instruction
Execution Set SAMP
SAMP
AD61
DONE
AD1IF
Clear SAMP
AD60
TSAMP
AD55
AD55
12
34 5 6
78
56
78
1 ^{– Software sets AD1CON. SAMP to start sampling.}
2 – Sampling starts after discharge period. TSAMP is described in Section 28. “Analog-to-Digital Converter (ADC)
without DMA” (DS70249) in the “dsPIC33F/PIC24H Family Reference Manual”.
3 ^{– Software clears AD1CON. SAMP to start conversion.}
4 ^{– Sampling ends, conversion sequence starts.}
5 – Convert bit 9.
6 ^{– Convert bit 8.}
7 ^{– Convert bit 0.}
8 ^{– One TAD for end of conversion.}
FIGURE 24-24:
ADC CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS (CHPS<1:0> = 01,
SIMSAM = 0, ASAM = 1, SSRC<2:0> = 111, SAMC<4:0> = 00001)
AD50
ADCLK
Instruction
Execution
Set ADON
SAMP
AD1IF
TSAMP
AD55
AD55
TSAMP
AD55
DONE
12
34
5 6734
56
8
1 ^{– Software sets AD1CON. ADON to start AD operation.}
2 – Sampling starts after discharge period. TSAMP is described in
Section 28. “Analog-to-Digital Converter (ADC) without DMA”
(DS70249) in the “dsPIC33F/PIC24H Family Reference Manual'.
3 ^{– Convert bit 9.}
4 ^{– Convert bit 8.}
5 ^{– Convert bit 0.}
6 ^{– One TAD for end of conversion.}
7 ^{– Begin conversion of next channel.}
8 ^{– Sample for time specified by SAMC<4:0>.}
© 2011 Microchip Technology Inc.
DS70592C-page 283